摘要
以芬顿试剂为引发剂,木薯淀粉为主链,苯乙烯(St)、丙烯酸丁酯(BA)、松香、甲基丙烯酸二甲基氨基乙酯(DM)和N-羟甲基丙烯酰胺(NMA)为单体,采用无皂乳液聚合法在木薯淀粉分子上接枝苯丙共聚单体,合成出一种苯丙无皂乳液表面施胶剂,并通过傅里叶变换红外光谱仪、热重分析仪、粒径分析仪、静态接触角和扫描电镜对乳液的结构和性能进行了表征。结果表明,在淀粉用量10%、m(单体总量)∶m(淀粉)=2∶1、H2O2用量5.0%、m(St)∶m(BA)=3∶1、松香用量0.8%、DM用量1.2%、NMA用量0.2%条件下,合成了苯丙无皂乳液表面施胶剂;当其用量为淀粉施胶液的0.4%时,施胶度为46 s,纸张环压指数为5.47 N·m/g。
Using Fenton reagent as initiator,cassava starch as main chain,the styrene （St）,butyl acrylate （BA）,rosin,dimethyl amino ethyl methacrylate（DM） and N-hydroxymethyl acrylamide （NMA） as main monomers,the soap-free emulsion sizing agent based on cassava starch grafted by styrene-acrylate comonomer was prepared by free-soap emulsion polymerization,and the structure and properties of the copolymer were characterized by FT-IR,TGA,particle size analyzer,static contact angle and SEM.The results showed that the excellent performance of styrene-acrylate copolymer emulsion was achieved when the dosage of starch was 10％,the mass ratio of total monomers and starch was 2∶ 1,the mass ratio of St and BA was 3∶ 1,the dosage of H2O2,rosin,DM and NMA were 5.0％,0.8％,1.2％ and 0.2％,respectively.When the dosage of soap-free emulsion was 0.4％ on the surface sizing agent,sizing degree was 46 s and ring crush index was 5.47 N· m/g.
出处
《中国造纸学报》
CAS
CSCD
北大核心
2013年第4期32-37,共6页
Transactions of China Pulp and Paper
基金
陕西省科学技术研究发展计划项目"玉米淀粉接枝共聚物的制备及应用(2009K02-06)"
陕西省教育厅重点实验室项目"梳状聚合物表面施胶剂合成及施胶性能的研究(2010JS055)"
关键词
淀粉
无皂乳液聚合
松香
表面施胶剂
starch
soap-free emulsion polymerization
rosin
surface sizing agent
