文献类型：期刊文献

英文题名：Research on starch-g-polyvinyl acetate and epoxy resin-modified corn starch adhesive

作者：Nie, Yanan[1];Tian, Xiaocai[1];Liu, Yanchang[1];Wu, Kai[1];Wang, Jikui[1]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat, Minist Educ,Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：34

期号：1

起止页码：77

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20125115826784);WOS:【SCI-EXPANDED(收录号:WOS:000312551000009)】；

基金：Contract grant sponsor: National Key Technology R & D Program of China; contract grant number: 2012BAD32B01.

语种：英文

外文关键词：Polyvinyl acetates - Starch - Crosslinking

摘要：A new corn starch adhesive modified by starch-g-polyvinyl acetate (starch-g-PVAc) and epoxy resin is described in this study. Starch-g-PVAc is used as high cohesive energy component to improve the dry shear strength of the starch adhesive. Although the epoxy resin, which can easily crosslink with the oxidized starch, is used as water-resistant component to improve the wet shear strength. Because there is no chemical reaction happening between polyvinyl acetate and epoxy resin, both the dry shear strength and the wet shear strength of the corn starch adhesive are notably increased. Considering all the related factors, the optimum of the modification is achieved when the dosage of starch-g-PVAc and epoxy resin is 70% of the oxidized starch latex with m(Ep): m(starch-g-PVAc) = 1:2. That is, the epoxy resin is 23% in mass fraction and starch-g-PVAc 47% in mass fraction. The dry shear strength is 4.50 MPa, and the wet shear strength is 2.51 MPa. The modified corn starch has a broad prospect in the application of plywood industry. POLYM. COMPOS., 2013. (c) 2012 Society of Plastics Engineers