淀粉/单体比例及酸解条件对高淀粉含量木材胶性能的影响  

Effects of Starch/VAc Monomerratio and Acidolysis Condition on Wood Adhesive Contains Large Amounts of Starch

作　　者：郭海南[1] 程力[1,2,3] 顾正彪[1,2,3] 李兆丰[1,2,3] 洪雁[1,2,3] 

机构地区：[1]江南大学食品学院,江苏无锡214122 [2]食品科学与技术国家重点实验室,江南大学,江苏无锡214122 [3]食品安全与营养协同创新中心,江南大学,江苏无锡214122

出　　处：《食品与生物技术学报》2014年第4期409-415,共7页Journal of Food Science and Biotechnology

基　　金：江苏省科技支撑(工业)计划项目(BE2011015);2011年度高校科研成果产业化推进项目(JHB2011-28);江苏高校优势学科建设工程资助项目

摘　　要：研究了淀粉与单体质量比对淀粉木材胶粘结性能、接枝参数、贮藏稳定性的影响。结果表明:当淀粉/单体质量比为7∶3时,较常规比例(淀粉/单体质量比为5∶5)下接枝率、接枝效率与干强度分别下降23.8%、21.1%和8.6%,经受冻融循环减少4次,但淀粉用量提高了40%,增加了环保性能。在此基础上,研究了酸解条件对淀粉/单体质量比为7∶3的木材胶性能的影响,综合考虑贮藏稳定性、粘结强度,选择酸解时间为2 h制备高淀粉含量木材胶,并对酸解作用影响淀粉胶性能及接枝共聚反应的机理进行了分析。The effects of starch/VAt （vinyl acetate） monomerratio on the shear strength,grafted parameter and storage stability of starch-based wood adhesive were studied. It was shown that, although the graft percentage, graft efficiency and dry shear strength of the starch adhesive produced when the starch/VAc monomerratio is 7：3,respectively decreased by 23.8% ,21.1% and 8.6%, undergo freeze-thaw cycle four times less when compared with the conventional proportional （starch/VAt monomerratio is 5：5）,the amount of starch was increased by 40% which significantly improved the environmental performance,so the starch/VAc monomerratio was selected as 7：3. And then acidolysis condition on the characteristics of wood adhesive contains large amounts of starch were studied. Comprehensive study of storage stability and bond strength, select acid hydrolysis time was 2 h. Then on this action mechanism of reaction was analyzed. basis ,the wood adhesive contains large acidolysis on characteristics of starch amounts of starch was prepared. The adhesive and graft copolymerization

关 键 词：淀粉 醋酸乙烯酯 酸解 剪切强度 接枝共聚 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程]