淀粉-壳聚糖层层自组装木材胶黏剂的研究
摘要：木材是当今社会常用的一种材料，且木材资源的短缺将与我国经济发展长期共存。人造板是一种提高木材利用率和改善木材性能的重要途径。如今，人造板工业已经成为木材工业的一个重要分支。木材胶黏剂在人造板工业中起着举足轻重的作用。目前木材胶黏剂的用量超过其他所有产品用胶黏剂的2倍，其中“三醛”胶的用量占90%，在生产过程与使用过程中会释放出游离甲醛，危害人们的身体健康。因此，研究无甲醛环保型人造板非常必要。为了减少甲醛木材胶黏剂的使用，研究了壳聚糖与淀粉的化学改性，采用层层自组装技术，制备出一种黏结性能好、价格优廉、无毒、易上浆的胶合板胶黏剂膜。
关键词： 木材 O-羟甲基壳聚糖 壳聚糖 层层自组装 氧化淀粉
Abstract: Wood is a commonly used material in todays society, and the shortage of wood resources will coexist with my countrys economic development for a long time. Wood-based panels are an important way to increase the utilization rate of wood and improve the performance of wood. Today, the wood-based panel industry has become an important branch of the wood industry. Wood adhesives play a pivotal role in the wood-based panel industry. At present, the amount of wood adhesives is more than twice that of all other products. Among them, the amount of 'trialdehyde' glue accounts for 90%. Free formaldehyde is released during production and use, which endangers peoples health. Therefore, it is very necessary to study the formaldehyde-free and environmentally friendly wood-based panels. In order to reduce the use of formaldehyde wood adhesives, the chemical modification of chitosan and starch was studied, and layer-by-layer self-assembly technology was used to prepare a plywood adhesive with good bonding performance, high price, non-toxic, and easy to sizing. Mucous film.
Keywords： wood ； O-hydroxymethyl chitosan ； chitosan ；layer-by-layer self-assembly ；oxidized starch
一、原料介绍
1 壳聚糖的研究
壳聚糖是甲壳素脱乙酞反应后的产物,也是自然界中唯一的天然碱性多糖。壳聚糖是一种来源十分丰富、生物相容性好、可生物降解，而且安全无毒，在食品、医药、农业种子、日用化工、工业废水处理等行业广泛使用，所以被广泛关注，并被制备成各种类型的产品。[1-5]
1.1 壳聚糖的分子结构
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