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Technique for improving interfacial compatibility of bamboo fiber and polybutylene succinate based on polydopamine bionic interfacial modification modifier

A technology of polybutylene succinate and polydopamine, which is applied in the field of polymer biomodifiers, can solve problems such as infeasibility, high cost, and difficult operation, and achieve improved utilization rate and good dimensional stability , the effect of improving the ecological environment

Inactive Publication Date: 2017-12-12
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the shellfish adhesion protein is directly extracted from the shellfish, it is not only difficult to operate but also very expensive, and it is not feasible. The researchers studied the structure of the shellfish adhesion protein and synthesized it with the same functional unit. Biomimetic Modifier Polydopamine

Method used

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  • Technique for improving interfacial compatibility of bamboo fiber and polybutylene succinate based on polydopamine bionic interfacial modification modifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Test material.

[0016] Bamboo fiber, mixed particle size 40-60 mesh, fiber length less than 380μm, purchased from Anhui Sentai Wood Plastic Group Co., Ltd.; polybutylene succinate (PBS), flow index 2.0g / 10 min, crystallinity Percentage 32%, density 1.24g / cm3, purchased from Shanghai Showa Polymer Co., Ltd.; dopamine hydrochloride (98.5%) and tris(hydroxymethyl)methylaminomethane (99.9%), purchased from Beijing Suo Laibao Technology Co., Ltd. ; Hydrochloric acid, solid paraffin and deionized water were purchased from Beijing Sinopharm Chemical Reagent Beijing Co., Ltd. All materials were used without further purification.

[0017] (2) Test equipment.

[0018] DLZ-6510 vacuum drying oven, Shanghai Donglu Instrument Equipment Co., Ltd.; HJB-S 450 laboratory mixer, Shanghai Huiwei Mechanical and Electrical Equipment Co., Ltd.; SHR-A high-speed mixer, Zhangjiagang Tongsha Plastic Machinery Co., Ltd. ; SJSH30 twin-screw extruder, Nanjing Rubber and Plastic Machinery F...

Embodiment 2

[0026] (1) Test material.

[0027] Bamboo fiber, mixed particle size 40-60 mesh, fiber length less than 380μm, purchased from Anhui Sentai Wood Plastic Group Co., Ltd.; polybutylene succinate (PBS), flow index 2.0g / 10 min, crystallinity Percentage 32%, density 1.24g / cm3, purchased from Shanghai Showa Polymer Co., Ltd.; dopamine hydrochloride (98.5%) and tris(hydroxymethyl)methylaminomethane (99.9%), purchased from Beijing Suo Laibao Technology Co., Ltd. ; Hydrochloric acid, solid paraffin and deionized water were purchased from Beijing Sinopharm Chemical Reagent Beijing Co., Ltd. All materials were used without further purification.

[0028] (2) Test equipment.

[0029] DLZ-6510 vacuum drying oven, Shanghai Donglu Instrument Equipment Co., Ltd.; HJB-S 450 laboratory mixer, Shanghai Huiwei Mechanical and Electrical Equipment Co., Ltd.; SHR-A high-speed mixer, Zhangjiagang Tongsha Plastic Machinery Co., Ltd. ; SJSH30 twin-screw extruder, Nanjing Rubber and Plastic Machinery Fac...

Embodiment 3

[0037] (1) Test material.

[0038] Bamboo fiber, mixed particle size 40-60 mesh, fiber length less than 380μm, purchased from Anhui Sentai Wood Plastic Group Co., Ltd.; polybutylene succinate (PBS), flow index 2.0g / 10 min, crystallinity Percentage 32%, density 1.24g / cm3, purchased from Shanghai Showa Polymer Co., Ltd.; dopamine hydrochloride (98.5%) and tris(hydroxymethyl)methylaminomethane (99.9%), purchased from Beijing Suo Laibao Technology Co., Ltd. ; Hydrochloric acid, solid paraffin and deionized water were purchased from Beijing Sinopharm Chemical Reagent Beijing Co., Ltd. All materials were used without further purification.

[0039] (2) Test equipment.

[0040] DLZ-6510 vacuum drying oven, Shanghai Donglu Instrument Equipment Co., Ltd.; HJB-S 450 laboratory mixer, Shanghai Huiwei Mechanical and Electrical Equipment Co., Ltd.; SHR-A high-speed mixer, Zhangjiagang Tongsha Plastic Machinery Co., Ltd. ; SJSH30 twin-screw extruder, Nanjing Rubber and Plastic Machinery F...

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Abstract

The invention discloses a method for preparing a bionic modified bamboo fiber reinforced polybutylene succinate (PBS) composite material. The method comprises the following steps: (1) screening a bamboo fiber, keeping the length less than 380mu m, and performing soaking treatment with a dopamine hydrochloride solution; 2) putting trismetyl aminomethane (Tris) into the soaked mixed system to adjust the pH value to alkalescence, stirring at normal temperature and normal pressure, filtering, and drying so as to obtain a polydopamine modified bamboo fiber of which the water content is less than 1%; and 3) uniformly mixing the modified bamboo fiber with PBS granules in a mass ratio of 1:1 in a high-speed mixing machine, pelletizing in a double-screw extruder, performing compression molding on mixed granules in a hot press, naturally cooling in a cold press, and demolding, thereby obtaining a modified bamboo fiber / PBS composite material. According to the method disclosed by the invention, dopamine has biocompatibility, the fiber is slightly damaged, no complex container is needed in the modification process, the production method is simple and convenient and safe and environmentally friendly, and the mechanical properties of the composite material are remarkably improved.

Description

technical field [0001] The invention relates to the field of macromolecular biomodifiers, in particular to a technique for using polydopamine as a modifier to enhance the interfacial compatibility between bamboo fiber and plastics. Background technique [0002] The shellfish adhesion protein secreted by marine shellfish has super strong adhesion ability, which can make it firmly adhere to the surface of various solid substrates such as reefs and ship hulls, and will not fall off even after being washed by seawater for a long time. 3,4-Dihydroxyphenylalanine (DOPA) is the main component of shellfish adhesion protein, and it is also an amino acid with catechol functional groups as side groups. The catechol functional group has chemical multifunctionality and pro-diversity, which enhances the adhesion and cohesion between the shellfish adhesion protein and the substrate, and is the main functional unit of the shellfish adhesion protein. [0003] Polybutylene succinate is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L67/02
CPCC08L67/02C08L97/02C08L2201/06C08L2203/30C08L2205/08
Inventor 洪工画张双保宋伟陈政豪王翠翠杨泽勋林健勇
Owner BEIJING FORESTRY UNIVERSITY
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