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Bio-based antibacterial adhesive and preparation method thereof

A bio-based and adhesive technology, applied in the direction of adhesives, etc., can solve the problems of complex raw material composition and preparation process, hidden dangers of nano-silver to human health, and insufficient safety of heavy metals, and achieve good antibacterial and biocompatibility. Significant antibacterial activity, The effect of improving the bonding effect

Active Publication Date: 2022-01-14
WUHAN TEXTILE UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most antibacterial adhesives are mixed with antibacterial agents in the adhesive. The antibacterial agents mixed are generally divided into organic antibacterial agents and inorganic antibacterial agents. Most of the organic antibacterial agents are phenolic alcohol compounds. Adhesive seeps out to achieve, short-term effect is strong, but there is a problem of short antibacterial life; inorganic antibacterial agents are mostly metal ions containing antibacterial properties, compared with organic antibacterial agents, inorganic antibacterial agents are slow-release and long-acting, stable performance, but There are also hidden dangers such as high price and heavy metals are not safe enough for the human body.
[0004] Chinese patent publication number: CN111087945A, publication date: 2020-05-01, the title of the invention is a starch adhesive with antibacterial function and its preparation method. The adhesive introduces graphene / nano-silver composite material into the starch adhesive, although It has good antibacterial effect, but the raw material composition and preparation process are complex, the production cost is high, and nano silver has certain hidden dangers to human health

Method used

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  • Bio-based antibacterial adhesive and preparation method thereof
  • Bio-based antibacterial adhesive and preparation method thereof
  • Bio-based antibacterial adhesive and preparation method thereof

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preparation example Construction

[0030] A preparation method of a bio-based antibacterial adhesive, the preparation method comprising the following steps:

[0031] S1. Add the reactant 5',5-diallyl-2,2'-biphenyldiol and 3,6-dioxa-1,8-octanedithiol to toluene solvent, at room temperature Stir at 300-500r / min to completely dissolve the reactant in the toluene solution to obtain a mixed solution;

[0032] Among them, the mass fraction of 5',5-diallyl-2,2'-biphenyldiol and 3,6-dioxa-1,8-octanedithiol is 60-70:30- 40, the ratio of mass and number of reactants to solvent is 10-20:80-90;

[0033] S2. Add catalyst 2-isopropylthioxanthone to the mixed solution obtained in step S1, stir until completely dissolved, wherein the mass parts of catalyst and reactant are 1-2:100;

[0034] S3. At room temperature, the mixed solution added with the catalyst obtained in step S2 is stirred at a stirring speed of 800-1000r / min, and placed under a 365nm light source to irradiate for 0.5h to obtain a product solution. The reactio...

Embodiment 1

[0040] The preparation method of bio-based antibacterial adhesive:

[0041] (1) Mix 6.0g 5',5-diallyl-2,2'-diphenol (CAS No.: 528-43-8) and 4.0g 3,6-dioxa-1,8- Octanedithiol is added in the toluene of 45g, at room temperature, reactant is dissolved completely with 300r / min stirring;

[0042] (2) Add 100 mg of 2-isopropylthioxanthone ITX (CAS No.: 5495-84-1) to the mixed solution obtained in step (1) and stir until completely dissolved;

[0043] (3) Stir the mixed solution obtained in step (2) at room temperature at a stirring speed of 800 r / min, and irradiate with a 365 nm light source for 0.5 h.

[0044] (4) The product solution that step (3) obtains is joined in the 500ml cyclohexane, after stirring 10min, leave standstill;

[0045] (5) Remove the supernatant of the solution obtained in step (4), collect the colloidal precipitate in the lower layer, and dry at 30°C and 0.09Mpa for 30min to obtain the bio-based antibacterial adhesive.

[0046] see figure 1 Shown is the nu...

Embodiment 2

[0051] The preparation method of bio-based antibacterial adhesive:

[0052] (1) Mix 7.0g 5',5-diallyl-2,2'-diphenol (CAS No.: 528-43-8) and 7.0g 3,6-dioxa-1,8- Octanedithiol is added in the toluene of 90g, at room temperature, with 500r / min stirring, reactant is dissolved completely;

[0053] (2) Add 200 mg of 2-isopropylthioxanthone ITX (CAS No.: 5495-84-1) to the mixed solution obtained in step (1) and stir until completely dissolved;

[0054] (3) Stir the mixed solution obtained in step (2) at room temperature at a stirring speed of 1000 r / min, and irradiate with a 365 nm light source for 0.5 h.

[0055] (4) The product solution that step (3) obtains is joined in the 900ml cyclohexane, after stirring 10min, leave standstill;

[0056] (5) Remove the supernatant of the solution obtained in step (4), collect the colloidal precipitate in the lower layer, and dry at 30°C and 0.09Mpa for 30min to obtain the bio-based antibacterial adhesive.

[0057] See image 3 Shown is the ...

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Abstract

The invention relates to a bio-based antibacterial adhesive, in particular, relates to a bio-based antibacterial adhesive and a preparation method thereof, and belongs to an adhesive synthesis technology. The bio-based antibacterial adhesive is a linear polymer which is obtained by taking 5',5-diallyl-2,2'-biphenol and 3,6-dioxa-1,8-octane dithiol as reactants, taking 2-isopropyl thioxanthone as a catalyst and taking methylbenzene as a solvent at room temperature under the irradiation of a 365 nm light source. The 5',5-diallyl-2,2'-biphenol disclosed by the invention is derived from a bio-based compound of a magnolia deciduous tree plant, and has good antibacterial property and biocompatibility. The bio-based antibacterial adhesive disclosed by the invention has the characteristics of biomass source, reproducibility, easiness in degradation, low energy consumption and simple process, and the economic value of the antibacterial adhesive is improved.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a bio-based antibacterial adhesive and a preparation method thereof, belonging to the adhesive synthesis technology. Background technique [0002] Adhesives are natural or synthetic, organic or inorganic substances that can connect two or more parts or materials together through interface adhesion and cohesion. "Adhesive" is a general standard term that also includes other glues, putties, mucilages, plasters, etc. Adhesives are widely used in industry and life, and can simplify industry and reduce costs in industrial production. [0003] At present, most antibacterial adhesives are mixed with antibacterial agents in the adhesive. The antibacterial agents mixed are generally divided into organic antibacterial agents and inorganic antibacterial agents. Most of the organic antibacterial agents are phenolic alcohol compounds. Adhesive seeps out to achieve, short-term effect is st...

Claims

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Application Information

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IPC IPC(8): C08G75/045C09J181/02
CPCC08G75/045C09J181/02C08G2170/00C08G2230/00Y02A50/30
Inventor 杨红军王宗垒王玉丽马思甜周应山刘欣庄燕徐卫林
Owner WUHAN TEXTILE UNIV
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