原淀粉和预处理方法对淀粉基木材胶粘剂性能的影响研究

The Studies of Different Kinds of Starch and Preparing Ways to the Starch-Based Wood Adhesive

采用不同原淀粉制备出淀粉基木材胶粘剂,通过比较发现蜡质玉米淀粉是制备淀粉基木材胶粘剂的最佳原淀粉;比较了酸解、氧化、酶解3种降粘方式对淀粉基木材胶粘剂的粘接性和流动性等性能的影响,实验表明氧化降粘具有最好的粘接性和流动性;比较了糊化对接枝共聚反应的影响,表明糊化有利于接枝共聚反应,有利于胶性能的提高。

In this manuscript, corn starch-based, tapioca starch-based, potato starch-based, waxy starch-based wood adhesive was compared, and the results indicated that the waxy starch is the most suitable for making starch-based wood adhesive. Furthermore, acid-thinned, oxidized, enzymolysis ways which get high density and low viscosity were compared, and the result shown that oxidized preparing ways can get the highest dry bond strength. Finally, the effect of gelatinization to graft copolymerization was studied and gelatinization before grafting copolymerization can get higher grafting parameters.