摘要
大豆蛋白胶黏剂以植物蛋白质大分子为主要原料,自身存在相对分子质量大、黏度高、流动性差等突出问题,同时大豆蛋白质分子结构复杂、空间位阻大,大量的高活性基团和疏水性基团被复杂大分子链段包裹遮蔽,导致大豆蛋白胶黏剂在木材表面涂布性能差、胶层界面分布不均、耐水胶合强度低,阻碍了其工业化推广和应用。文中探究了造成大豆蛋白胶黏剂高黏度的分子及超分子结构机理,并综述了国内外研究人员针对降低大豆蛋白胶黏剂黏度的最新进展。通过以物理改性、化学改性和生物改性分类归纳,发现通过改变大豆蛋白的二、三、四级结构,对复杂分子结构进行疏解,可有效降低大豆蛋白胶黏剂的黏度、延长储存期、改善界面涂布性能、提高胶合强度。
Soy protein-based adhesives using plant protein macromolecules as main raw material,have prominent problems,such as large molecular weight,high viscosity,and poor fluidity,while soy protein molecular structures are complex,the steric hindrance is large,and a large number of highly active groups and hydrophobic groups are covered by complex macromolecular chain segments,resulting in poor coating performance of soy protein adhesive on the surface of wood,uneven distribution of the adhesive layer interface,low water-resistant glue strength,hindering its industrial promotion and application.In this paper,the molecule and supermolecule mechanism of high viscosity of soy protein adhesives were investigated,and the latest progress in reducing the viscosity of soy protein adhesives was reviewed.Through the classification of physical,chemical and biological modification,it is found that the viscosity of soy protein-based adhesive can be effectively reduced,the storage life can be prolonger,the interface coating performance can be improved,and the bond strength can be increased by changing the second,third and fourth order structure of soy protein and reliving the complex molecular structures.
作者
赵思齐
王含章
王浏浏
张伟
Siqi Zhao;HanzhangWang;LiuliuWang;Wei Zhang(Key Laboratory of Wood Materials Science&Application of Ministry of Education;Key Laboratory of Beijing for Wood Science and Engineering,Beijing Forestry University,Beijing 100083,China;Guangxi Academy of Forestry,Guilin 530002,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2023年第3期163-171,共9页
Polymer Materials Science & Engineering
基金
广西重点研发计划(桂科AB22080086)
中央高校基本科研业务费专项资金(2021ZY27)。
关键词
大豆蛋白
胶黏剂
黏度
结构
soy protein
adhesive
viscosity
structure
