A biomass regenerated fiber fabric and its preparation process

Abstract

The invention relates to the technical field of regenerated fiber fabrics, and specifically discloses a biomass regenerated fiber fabric and a preparation process thereof; the steps include: S1: taking terephthalic acid, ethylene glycol and an esterification catalyst, stirring and mixing, heating to 180-190 DEG C for reaction for 50-70 minutes, heating to 250-260 DEG C, adding an antibacterial modifier and a Lewis acid catalyst, stirring for reaction, and then vacuumizing for reaction, after the reaction is completed, discharging, granulating, and then melt spinning to obtain polyester fiber; S2: taking the polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane, taking it out, rinsing it with ethanol, and drying it to obtain surface-modified polyester; taking the biomass regenerated fiber and the surface-modified polyester for blending to obtain a basic fabric; S3: taking the basic fabric, soaking it in a seaweed polysaccharide aqueous solution and a glutaraldehyde aqueous solution in sequence, taking it out, and drying it at room temperature to obtain the biomass regenerated fiber fabric.

Description

Technical Field

[0001] The invention relates to the technical field of regenerated fiber fabrics, and specifically discloses a biomass regenerated fiber fabric and a preparation process thereof. Background Art

[0002] In the context of green and low-carbon development, environmentally friendly biomass recycled fiber textiles are gaining more and more attention. Biomass recycled fiber textiles contain biomass recycled fibers made from natural animal and plant waste, life by-products, etc., which are environmentally friendly and human-friendly.

[0003] Regenerated bamboo fiber has advantages such as good moisture absorption and air permeability, but its strength is low. It is difficult to meet market requirements when used alone, and it needs to be blended with other fibers to make up for the shortcomings. Polyester has good strength, good elasticity, and good dimensional stability. Mixing it with regenerated bamboo fiber can combine the advantages of both. However, polyester has the problems of poor water absorption and difficulty in degradation. In summary, it is of great significance to prepare a degradable and absorbent polyester, mix it with regenerated bamboo fiber, and prepare a biomass regenerated fiber fabric with good strength, environmental friendliness, good moisture absorption and air permeability. Summary of the invention

[0004] The purpose of the present invention is to provide a biomass regenerated fiber fabric and a preparation process thereof to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solution: A process for preparing biomass regenerated fiber fabric, comprising the following steps: S1: taking polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane, taking it out, rinsing it with ethanol, and drying it to obtain surface-modified polyester;

[0006] S2: taking biomass recycled fiber and surface modified polyester as raw materials, blending them to obtain basic fabrics;

[0007] S3: Take the base fabric, soak it in the seaweed polysaccharide aqueous solution and the glutaraldehyde aqueous solution in sequence, take it out, and dry it at room temperature to obtain the biomass regenerated fiber fabric.

[0008] Preferably, the biomass regenerated fiber is regenerated bamboo fiber, and the mass ratio of the biomass regenerated fiber to the surface modified polyester is (2-3):(7-8).

[0009] Preferably, the regenerated bamboo fiber is Rio Bamboo Fiber provided by Shanghai Rio Fiber Enterprise Development Co., Ltd., with a fineness of 2.58 dtex and a length of 38 mm.

[0010] More optimally, the concentration of the seaweed polysaccharide aqueous solution is 1.0-1.5wt%, and the soaking time is 30-40min; the concentration of the glutaraldehyde aqueous solution is 0.005-0.01wt%, and the soaking time is 50-60min.

[0011] More optimally, the seaweed polysaccharide is laminarin.

[0012] More optimally, the concentration of the 3-aminopropyltriethoxysilane acetone solution is 3-5wt%, and the immersion time is 8-10 minutes.

[0013] More optimally, the preparation of the polyester fiber includes the following steps: Step 1: taking double-bonded isosorbide, oleic acid, and 3-chloro-2-hydroxypropyl methacrylate, adding them to dimethylformamide and mixing them evenly, adding an initiator, stirring and reacting at 70-80° C. for 4-6 hours, and removing the solvent to obtain a modifier;

[0014] Step 2: Add chitosan to acetic acid aqueous solution, stir evenly, cool to 0-3°C, add modifier and dimethylformamide, stir for 12-15h, heat to 30-35°C, add triethylamine, stir for 12-15h, remove the solvent, dry, and obtain an antibacterial modifier;

[0015] Step 3: Take terephthalic acid, ethylene glycol, and esterification catalyst, stir and mix, heat to 180-190°C for reaction for 50-70 minutes, heat to 250-260°C, add antibacterial modifier and Lewis acid catalyst, stir for 20-30 minutes, vacuum react for 1-2 hours, heat to 280°C for reaction for 1-2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material; then melt-spin to obtain polyester fiber.

[0016] More optimally, the modifier includes the following raw materials, by mass: 25-30 parts of double-bonded isosorbide, 25-30 parts of oleic acid, 15-20 parts of 3-chloro-2-hydroxypropyl methacrylate, 200-300 parts of dimethylformamide, and 0.02-0.04 parts of initiator;

[0017] The antibacterial modifier comprises the following raw materials, calculated by weight: 1-2 parts of chitosan, 100-120 parts of 5wt% acetic acid aqueous solution, 4-6 parts of modifier, 40-60 parts of dimethylformamide, and 3-5 parts of triethylamine;

[0018] The polyester fiber comprises the following raw materials, calculated by weight: 20 to 25 parts of terephthalic acid, 6 to 10 parts of ethylene glycol, 0.2 to 0.5 parts of esterification catalyst monobutyl tin triisooctanoate, 4 to 6 parts of antibacterial modifier, and 0.5 to 1 part of Lewis acid catalyst boron trifluoride.

[0019] More optimally, the preparation of the double-bonded isosorbide includes the following steps: adding isosorbide, 3-bromo-1-propylene and sodium carbonate into acetone and mixing them evenly, stirring and reacting at 50-55° C. for 3-5 hours, and removing the solvent to obtain the double-bonded isosorbide.

[0020] More optimally, the double-bonded isosorbide comprises the following raw materials, calculated by mass: 12 to 15 parts of isosorbide, 20 to 25 parts of 3-bromo-1-propylene, 20 to 25 parts of sodium carbonate, and 80 to 120 parts of acetone.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are: the regenerated bamboo fiber is blended with polyester, so that the fabric has the characteristics of good water permeability and air permeability of the regenerated bamboo fiber, good strength and good dimensional stability of the polyester fiber, and meets the requirements of green environmental protection;

[0022] The surfaces of the regenerated bamboo fiber and the surface-modified polyester used in the present invention both contain active groups. After the base fabric is prepared, it is sequentially immersed in a seaweed polysaccharide aqueous solution and a glutaraldehyde aqueous solution. On the one hand, the seaweed polysaccharide is introduced to improve the human affinity, comfort and antibacterial property of the fabric. On the other hand, under the action of glutaraldehyde, the bonding force between the fibers is strengthened to further improve the strength.

[0023] The polyester fiber used in the present invention is added with an antibacterial modifier, wherein isosorbide has good degradability and is introduced to improve the environmental friendliness of the polyester fiber; after being modified, the isosorbide contains double bonds and can react with oleic acid and 3-chloro-2-hydroxypropyl methacrylate; the long chain of oleic acid can enhance flexibility and improve the elongation at break and processing performance of the material, and the carboxyl group can participate in the polymerization reaction of terephthalic acid and ethylene glycol in the subsequent step to improve compatibility; 3-chloro-2-hydroxypropyl methacrylate and chitosan added subsequently undergo quaternization reaction to improve antibacterial property and environmental friendliness; the ratio of the raw materials of the antibacterial modifier and the amount of addition need to be controlled to avoid affecting the copolymerization reaction and affecting the performance of the polyester fiber. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The following parts are by mass unless otherwise specified;

[0026] Example 1: S1: 14 parts of isosorbide, 22 parts of 3-bromo-1-propylene and 20 parts of sodium carbonate were added to 100 parts of acetone, mixed evenly, stirred at 55° C. for 4 hours, and the solvent was removed to obtain double-bonded isosorbide;

[0027] S2: Take 30 parts of double-bonded isosorbide, 25 parts of oleic acid, and 16 parts of 3-chloro-2-hydroxypropyl methacrylate, add them to 250 parts of dimethylformamide and mix them evenly, add 0.03 parts of initiator benzoyl peroxide, stir and react at 78°C for 5 hours, remove the solvent, and obtain a modifier;

[0028] S3: Add 1.5 parts of chitosan to 100 parts of 5 wt% acetic acid aqueous solution, stir evenly, cool to 0°C, add 5 parts of modifier and 50 parts of dimethylformamide, stir for 12 hours, heat to 35°C, add 4 parts of triethylamine, stir for 12 hours, remove the solvent, and dry to obtain an antibacterial modifier;

[0029] S4: Take 25 parts of terephthalic acid, 8 parts of ethylene glycol, and 0.2 parts of esterification catalyst monobutyl tin triisooctanoate, stir and mix, heat to 185°C for reaction for 60 minutes, heat to 255°C, add 5 parts of antibacterial modifier and 0.5 parts of Lewis acid catalyst boron trifluoride, stir for 30 minutes, vacuum react for 1 hour, heat to 280°C for reaction for 2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material, and then melt-spin at 280°C, with a continuous spinning speed of 4000 m / min and a draft multiple of 6 times to obtain polyester fiber;

[0030] S5: taking a polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane with a concentration of 5 wt% for 10 min, taking it out, rinsing it with ethanol, and drying it to obtain a surface-modified polyester;

[0031] S6: taking 25wt% of regenerated bamboo fiber and 75wt% of surface modified polyester as raw materials, blending them, and weaving them by double-sided weft knitting circular machine to obtain a basic fabric;

[0032] S7: Take the base fabric, soak it in a 1.2wt% seaweed polysaccharide aqueous solution for 35 minutes, soak it in a 0.008wt% glutaraldehyde aqueous solution for 55 minutes, take it out, and dry it at room temperature to obtain a biomass regenerated fiber fabric.

[0033] Example 2: S1: 12 parts of isosorbide, 20 parts of 3-bromo-1-propylene and 20 parts of sodium carbonate were added to 100 parts of acetone, mixed evenly, stirred at 55° C. for 4 hours, and the solvent was removed to obtain double-bonded isosorbide;

[0034] S2: Take 25 parts of double-bonded isosorbide, 25 parts of oleic acid, and 15 parts of 3-chloro-2-hydroxypropyl methacrylate, add them to 250 parts of dimethylformamide and mix them evenly, add 0.03 parts of initiator benzoyl peroxide, stir and react at 78°C for 4 hours, remove the solvent, and obtain a modifier;

[0035] S3: Add 1 part of chitosan to 100 parts of 5 wt% acetic acid aqueous solution, stir evenly, cool to 0°C, add 4 parts of modifier and 50 parts of dimethylformamide, stir for 12 hours, heat to 35°C, add 3 parts of triethylamine, stir for 12 hours, remove the solvent, and dry to obtain an antibacterial modifier;

[0036] S4: Take 20 parts of terephthalic acid, 6 parts of ethylene glycol, and 0.2 parts of esterification catalyst monobutyl tin triisooctanoate, stir and mix, heat to 185°C for reaction for 60 minutes, heat to 255°C, add 4 parts of antibacterial modifier and 0.5 parts of Lewis acid catalyst boron trifluoride, stir for 30 minutes, vacuum react for 1 hour, heat to 280°C for reaction for 2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material, and then melt-spin at 280°C, with a continuous spinning speed of 4000 m / min and a drafting multiple of 6 times to obtain polyester fiber;

[0037] S5: taking a polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane with a concentration of 5 wt% for 10 min, taking it out, rinsing it with ethanol, and drying it to obtain a surface-modified polyester;

[0038] S6: taking 20wt% of regenerated bamboo fiber and 80wt% of surface modified polyester as raw materials, blending them, and weaving them by double-sided weft knitting circular machine to obtain basic fabric;

[0039] S7: Take the base fabric, soak it in a 1.0wt% seaweed polysaccharide aqueous solution for 40 minutes, soak it in a 0.005wt% glutaraldehyde aqueous solution for 60 minutes, take it out, and dry it at room temperature to obtain a biomass regenerated fiber fabric.

[0040] Example 3: S1: 15 parts of isosorbide, 25 parts of 3-bromo-1-propylene and 25 parts of sodium carbonate were added to 100 parts of acetone, mixed evenly, stirred at 55° C. for 4 hours, and the solvent was removed to obtain double-bonded isosorbide;

[0041] S2: Take 30 parts of double-bonded isosorbide, 30 parts of oleic acid, and 20 parts of 3-chloro-2-hydroxypropyl methacrylate, add them to 250 parts of dimethylformamide and mix them evenly, add 0.03 parts of initiator benzoyl peroxide, stir and react at 78°C for 6 hours, remove the solvent, and obtain a modifier;

[0042] S3: Add 2 parts of chitosan to 100 parts of 5wt% acetic acid aqueous solution, stir evenly, cool to 0°C, add 6 parts of modifier and 50 parts of dimethylformamide, stir for 12h, heat to 35°C, add 5 parts of triethylamine, stir for 15h, remove the solvent, and dry to obtain an antibacterial modifier;

[0043] S4: Take 25 parts of terephthalic acid, 10 parts of ethylene glycol, and 0.2 parts of esterification catalyst monobutyl tin triisooctanoate, stir and mix, heat to 185°C for reaction for 60 minutes, heat to 255°C, add 6 parts of antibacterial modifier and 0.5 parts of Lewis acid catalyst boron trifluoride, stir for 30 minutes, vacuum react for 1 hour, heat to 280°C for reaction for 2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material, and then melt-spin at 280°C, with a continuous spinning speed of 4000 m / min and a drafting multiple of 6 times to obtain polyester fiber;

[0044] S5: taking a polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane with a concentration of 5 wt% for 10 min, taking it out, rinsing it with ethanol, and drying it to obtain a surface-modified polyester;

[0045] S6: 30 wt% of regenerated bamboo fiber and 70 wt% of surface-modified polyester are taken as raw materials, blended, and woven by double-sided weft knitting circular machine to obtain a basic fabric;

[0046] S7: Take the base fabric, soak it in a 1.5wt% seaweed polysaccharide aqueous solution for 30 minutes, soak it in a 0.01wt% glutaraldehyde aqueous solution for 50 minutes, take it out, and dry it at room temperature to obtain a biomass regenerated fiber fabric.

[0047] Comparative Example 1 (the amount of raw materials added in the modifier was changed, and the other method steps were consistent with Example 1): S1: 14 parts of isosorbide, 22 parts of 3-bromo-1-propylene, and 20 parts of sodium carbonate were added to 100 parts of acetone, mixed evenly, stirred at 55° C. for 4 hours, and the solvent was removed to obtain double-bonded isosorbide;

[0048] S2: Take 30 parts of double-bonded isosorbide, 10 parts of oleic acid, and 20 parts of 3-chloro-2-hydroxypropyl methacrylate, add them to 250 parts of dimethylformamide and mix them evenly, add 0.03 parts of initiator benzoyl peroxide, stir and react at 78°C for 5 hours, remove the solvent, and obtain a modifier;

[0049] S3: Add 1.5 parts of chitosan to 100 parts of 5 wt% acetic acid aqueous solution, stir evenly, cool to 0°C, add 5 parts of modifier and 50 parts of dimethylformamide, stir for 12 hours, heat to 35°C, add 4 parts of triethylamine, stir for 12 hours, remove the solvent, and dry to obtain an antibacterial modifier;

[0050] S4: Take 25 parts of terephthalic acid, 8 parts of ethylene glycol, and 0.2 parts of esterification catalyst monobutyl tin triisooctanoate, stir and mix, heat to 185°C for reaction for 60 minutes, heat to 255°C, add 5 parts of antibacterial modifier and 0.5 parts of Lewis acid catalyst boron trifluoride, stir for 30 minutes, vacuum react for 1 hour, heat to 280°C for reaction for 2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material, and then melt-spin at 280°C, with a continuous spinning speed of 4000 m / min and a draft multiple of 6 times to obtain polyester fiber;

[0051] S5: taking a polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane with a concentration of 5 wt% for 10 min, taking it out, rinsing it with ethanol, and drying it to obtain a surface-modified polyester;

[0052] S6: taking 25wt% of regenerated bamboo fiber and 75wt% of surface modified polyester as raw materials, blending them, and weaving them by double-sided weft knitting circular machine to obtain a basic fabric;

[0053] S7: Take the base fabric, soak it in a 1.2wt% seaweed polysaccharide aqueous solution for 35 minutes, soak it in a 0.008wt% glutaraldehyde aqueous solution for 55 minutes, take it out, and dry it at room temperature to obtain a biomass regenerated fiber fabric.

[0054] Comparative Example 2 (changing the amount of chitosan added, the other method steps are consistent with Example 1): S1: 14 parts of isosorbide, 22 parts of 3-bromo-1-propylene, and 20 parts of sodium carbonate are added to 100 parts of acetone, mixed evenly, stirred at 55° C. for 4 hours, and the solvent is removed to obtain double-bonded isosorbide;

[0055] S2: Take 30 parts of double-bonded isosorbide, 25 parts of oleic acid, and 16 parts of 3-chloro-2-hydroxypropyl methacrylate, add them to 250 parts of dimethylformamide and mix them evenly, add 0.03 parts of initiator benzoyl peroxide, stir and react at 78°C for 5 hours, remove the solvent, and obtain a modifier;

[0056] S3: Add 2.5 parts of chitosan to 100 parts of 5wt% acetic acid aqueous solution, stir evenly, cool to 0°C, add 5 parts of modifier and 50 parts of dimethylformamide, stir for 12h, heat to 35°C, add 4 parts of triethylamine, stir for 12h, remove the solvent, and dry to obtain an antibacterial modifier;

[0057] S4: Take 25 parts of terephthalic acid, 8 parts of ethylene glycol, and 0.2 parts of esterification catalyst monobutyl tin triisooctanoate, stir and mix, heat to 185°C for reaction for 60 minutes, heat to 255°C, add 5 parts of antibacterial modifier and 0.5 parts of Lewis acid catalyst boron trifluoride, stir for 30 minutes, vacuum react for 1 hour, heat to 280°C for reaction for 2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material, and then melt-spin at 280°C, with a continuous spinning speed of 4000 m / min and a draft multiple of 6 times to obtain polyester fiber;

[0058] S5: taking a polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane with a concentration of 5 wt% for 10 min, taking it out, rinsing it with ethanol, and drying it to obtain a surface-modified polyester;

[0059] S6: taking 25wt% of regenerated bamboo fiber and 75wt% of surface modified polyester as raw materials, blending them, and weaving them by double-sided weft knitting circular machine to obtain a basic fabric;

[0060] S7: Take the base fabric, soak it in a 1.2wt% seaweed polysaccharide aqueous solution for 35 minutes, soak it in a 0.008wt% glutaraldehyde aqueous solution for 55 minutes, take it out, and dry it at room temperature to obtain a biomass regenerated fiber fabric.

[0061] Comparative Example 3 (the amount of the antibacterial modifier added was changed, and the other method steps were consistent with Example 1): S1: 14 parts of isosorbide, 22 parts of 3-bromo-1-propylene, and 20 parts of sodium carbonate were added to 100 parts of acetone, mixed evenly, stirred at 55° C. for 4 hours, and the solvent was removed to obtain double-bonded isosorbide;

[0062] S2: Take 30 parts of double-bonded isosorbide, 25 parts of oleic acid, and 16 parts of 3-chloro-2-hydroxypropyl methacrylate, add them to 250 parts of dimethylformamide and mix them evenly, add 0.03 parts of initiator benzoyl peroxide, stir and react at 78°C for 5 hours, remove the solvent, and obtain a modifier;

[0063] S3: Add 1.5 parts of chitosan to 100 parts of 5 wt% acetic acid aqueous solution, stir evenly, cool to 0°C, add 5 parts of modifier and 50 parts of dimethylformamide, stir for 12 hours, heat to 35°C, add 4 parts of triethylamine, stir for 12 hours, remove the solvent, and dry to obtain an antibacterial modifier;

[0064] S4: Take 25 parts of terephthalic acid, 8 parts of ethylene glycol, and 0.2 parts of esterification catalyst monobutyl tin triisooctanoate, stir and mix, heat to 185°C for reaction for 60 minutes, heat to 255°C, add 8 parts of antibacterial modifier and 0.5 parts of Lewis acid catalyst boron trifluoride, stir for 30 minutes, vacuum react for 1 hour, heat to 280°C for reaction for 2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material, and then melt-spin at 280°C, with a continuous spinning speed of 4000 m / min and a draft multiple of 6 times to obtain polyester fiber;

[0065] S5: taking a polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane with a concentration of 5 wt% for 10 min, taking it out, rinsing it with ethanol, and drying it to obtain a surface-modified polyester;

[0066] S6: taking 25wt% of regenerated bamboo fiber and 75wt% of surface modified polyester as raw materials, blending them, and weaving them by double-sided weft knitting circular machine to obtain a basic fabric;

[0067] S7: Take the base fabric, soak it in a 1.2wt% seaweed polysaccharide aqueous solution for 35 minutes, soak it in a 0.008wt% glutaraldehyde aqueous solution for 55 minutes, take it out, and dry it at room temperature to obtain a biomass regenerated fiber fabric.

[0068] Comparative Example 4 (changing the amount of raw materials added to the base fabric, and the other method steps are consistent with Example 1): S1: 14 parts of isosorbide, 22 parts of 3-bromo-1-propylene, and 20 parts of sodium carbonate are added to 100 parts of acetone, mixed evenly, stirred at 55° C. for 4 hours, and the solvent is removed to obtain double-bonded isosorbide;

[0069] S2: Take 30 parts of double-bonded isosorbide, 25 parts of oleic acid, and 16 parts of 3-chloro-2-hydroxypropyl methacrylate, add them to 250 parts of dimethylformamide and mix them evenly, add 0.03 parts of initiator benzoyl peroxide, stir and react at 78°C for 5 hours, remove the solvent, and obtain a modifier;

[0070] S3: Add 1.5 parts of chitosan to 100 parts of 5 wt% acetic acid aqueous solution, stir evenly, cool to 0°C, add 5 parts of modifier and 50 parts of dimethylformamide, stir for 12 hours, heat to 35°C, add 4 parts of triethylamine, stir for 12 hours, remove the solvent, and dry to obtain an antibacterial modifier;

[0071] S4: Take 25 parts of terephthalic acid, 8 parts of ethylene glycol, and 0.2 parts of esterification catalyst monobutyl tin triisooctanoate, stir and mix, heat to 185°C for reaction for 60 minutes, heat to 255°C, add 5 parts of antibacterial modifier and 0.5 parts of Lewis acid catalyst boron trifluoride, stir for 30 minutes, vacuum react for 1 hour, heat to 280°C for reaction for 2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material, and then melt-spin at 280°C, with a continuous spinning speed of 4000 m / min and a draft multiple of 6 times to obtain polyester fiber;

[0072] S5: taking a polyester fiber, soaking it in an acetone solution of 3-aminopropyltriethoxysilane with a concentration of 5 wt% for 10 min, taking it out, rinsing it with ethanol, and drying it to obtain a surface-modified polyester;

[0073] S6: 35 wt% of regenerated bamboo fiber and 65 wt% of surface-modified polyester are taken as raw materials, blended, and woven by double-sided weft knitting circular machine to obtain a basic fabric;

[0074] S7: Take the base fabric, soak it in a 1.2wt% seaweed polysaccharide aqueous solution for 35 minutes, soak it in a 0.008wt% glutaraldehyde aqueous solution for 55 minutes, take it out, and dry it at room temperature to obtain a biomass regenerated fiber fabric.

[0075] In the above examples, the test methods used are conventional methods unless otherwise specified; the raw materials used are commercially available unless otherwise specified, and the sources of the raw materials are as follows: glutaraldehyde (CAS: 111-30-8); terephthalic acid (CAS: 100-21-0); ethylene glycol (CAS: 107-21-1); boron trifluoride (CAS: 7637-07-2); 3-aminopropyltriethoxysilane (CAS: 919-30-2); acetone (CAS: 67-64-1); ethanol (CAS: 64-17-5); kelp polysaccharide (water-soluble kelp polysaccharide, Shandong Fengtai Biotechnology Co., Ltd.); isosorbide (S31074, Shanghai Yuanye); 3-bromo-1-propene (CAS: 106-95-6); sodium carbonate (S24152, Shanghai Yuanye); oleic acid (CAS: 112-80-1); 3-chloro-2-hydroxypropyl methacrylate (CAS: 13159-52-9); dimethylformamide (CAS: 68-12-2); initiator (benzoyl peroxide, CAS: 94-36-0); chitosan (S11064, Shanghai Yuanye); acetic acid (CAS: 64-19-7); triethylamine (CAS: 121-44-8); monobutyltin triisooctanoate (CAS: 23850-94-4).

[0076] Experiment: Take the biomass recycled fiber fabrics prepared in Examples 1 to 3 and Comparative Examples 1 to 4; (1) refer to GB / T21655.1-2008 standard to test the water absorption rate; (2) use an electronic fabric strength tester to test the breaking strength; see the table below for specific data;

[0077] Water absorption / % Breaking strength N / dtex Example 1 145 8.0 Example 2 143 7.8 Example 3 143 7.9 Comparative Example 1 133 7.1 Comparative Example 2 130 6.9 Comparative Example 3 130 6.6 Comparative Example 4 151 6.0

[0078] Conclusion: In comparative example 1, the amount of raw materials added in the modifier is changed, the amount of oleic acid added is reduced, and the amount of 3-chloro-2-hydroxypropyl methacrylate added is increased. Due to the structural change, the performance is reduced; in comparative example 2, the amount of chitosan is increased, and there are problems such as increased steric hindrance, which leads to a decrease in performance; in comparative example 3, the amount of antibacterial modifier added is increased, which may affect the polymerization reaction, and thus the performance is reduced; in comparative example 4, the amount of regenerated bamboo fiber and surface-modified polyester added is changed, the amount of regenerated bamboo fiber is increased, and the strength is significantly reduced; in summary, the biomass regenerated fiber fabric prepared by the method of the present invention has the advantages of both biomass regenerated fiber and polyester, has high strength and good water absorption, and conforms to the concept of environmental protection.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A process for preparing biomass regenerated fiber fabric, characterized in that: The following steps are involved: S1: Take double-bonded isosorbide, oleic acid, and 3-chloro-2-hydroxypropyl methacrylate, add them to dimethylformamide and mix them evenly, add initiator, stir and react at 70-80°C for 4-6 hours, remove the solvent, and obtain the modifier; Add chitosan to acetic acid aqueous solution, stir evenly, cool to 0-3°C, add modifier and dimethylformamide, stir for 12-15h, heat to 30-35°C, add triethylamine, stir for 12-15h, remove solvent, dry to obtain antibacterial modifier; Take terephthalic acid, ethylene glycol, and esterification catalyst, stir and mix, heat to 180-190°C for reaction for 50-70 minutes, heat to 250-260°C, add antibacterial modifier and Lewis acid catalyst, stir for 20-30 minutes, vacuum react for 1-2 hours, heat to 280°C for reaction for 1-2 hours, after the reaction is completed, discharge and granulate to obtain modified polyester raw material; then melt-spin to obtain polyester fiber; Take polyester fiber, soak it in 3-5wt% 3-aminopropyltriethoxysilane acetone solution for 8-10 minutes, take it out, rinse it with ethanol, and dry it to obtain surface modified polyester; S2: taking biomass recycled fiber and surface modified polyester as raw materials, blending them to obtain basic fabrics; S3: taking a base fabric, soaking it in a seaweed polysaccharide aqueous solution and a glutaraldehyde aqueous solution in sequence, taking it out, and drying it at room temperature to obtain a biomass regenerated fiber fabric; The modifier includes the following raw materials, calculated by mass: 25-30 parts of double-bonded isosorbide, 25-30 parts of oleic acid, 15-20 parts of 3-chloro-2-hydroxypropyl methacrylate, 200-300 parts of dimethylformamide, and 0.02-0.04 parts of initiator; The antibacterial modifier comprises the following raw materials, calculated by weight: 1-2 parts of chitosan, 100-120 parts of 5wt% acetic acid aqueous solution, 4-6 parts of modifier, 40-60 parts of dimethylformamide, and 3-5 parts of triethylamine; The polyester fiber comprises the following raw materials, calculated by weight: 20-25 parts of terephthalic acid, 6-10 parts of ethylene glycol, 0.2-0.5 parts of esterification catalyst, 4-6 parts of antibacterial modifier, and 0.5-1 parts of Lewis acid catalyst.

2. The process for preparing a biomass regenerated fiber fabric according to claim 1, characterized in that: The biomass regenerated fiber is regenerated bamboo fiber, and the mass ratio of the biomass regenerated fiber to the surface modified polyester is (2-3):(7-8).

3. The process for preparing a biomass regenerated fiber fabric according to claim 1, characterized in that: The concentration of the seaweed polysaccharide aqueous solution is 1.0-1.5wt%, and the soaking time is 30-40min; the concentration of the glutaraldehyde aqueous solution is 0.005-0.01wt%, and the soaking time is 50-60min.

4. The process for preparing a biomass regenerated fiber fabric according to claim 1, characterized in that: The preparation of the double-bonded isosorbide comprises the following steps: Add isosorbide, 3-bromo-1-propylene and sodium carbonate into acetone and mix evenly. Stir and react at 50-55°C for 3-5h. Remove the solvent to obtain double-bonded isosorbide.

5. The process for preparing a biomass regenerated fiber fabric according to claim 4, characterized in that: The double-bonded isosorbide comprises the following raw materials, calculated by weight: 12 to 15 parts of isosorbide, 20 to 25 parts of 3-bromo-1-propylene, 20 to 25 parts of sodium carbonate, and 80 to 120 parts of acetone.

6. Biomass regenerated fiber fabric prepared according to the process for preparing biomass regenerated fiber fabric according to any one of claims 1 to 5.