腈基淀粉接枝含氟单体共聚物乳液表面施胶剂的制备及应用  

Preparation of Acrylonitrile Modified Starch Grafting Dodecafluoroheptyl Methacrylate Polymer Emulsion and Its Application as Surface Sizing Agent

作　　者：王西锋[1] 张光华[1] 牛恒[1] 

机构地区：[1]陕西科技大学教育部轻化助剂化学与技术重点实验室,西安710021

出　　处：《纸和造纸》2011年第7期45-47,共3页Paper and Paper Making

基　　金：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;项目编号:2010JS055

摘　　要：以丙烯腈改性淀粉为分散剂,苯乙烯(St)、丙烯酸丁酯(BA)为单体,丙烯酰胺(AM)为交联单体,甲基丙烯酸二甲基氨基乙酯(DM)为阳离子单体,甲基丙烯酸十二氟庚酯(FM)为功能单体,过硫酸钾(K2S2O8)为引发剂,采用无皂乳液聚合技术合成了一种阳离子含氟表面施胶剂。最佳合成工艺是:w(腈基淀粉)=8%,w(FM)=0.3%,w(DM)=0.9%,w(AM)=3%,w(K2S2O8)=0.5%,m(St):m(BA)=2.5。并对施胶纸张各种性能做了测试,与同等条件下未含氟表面施胶剂相比,纸张的施胶度和抗张强度提高明显。The surface sizing agent was synthesized through free radical polymerization, by using acrylonitrile modified starch as a dispersant, styrene（St） and butyl acrylate（BA） as monomers, dimethylaminoethyl methacrylate（DM） as cationic monomer, acrylamide （AM） as cross-linking monomer, and dodecafluoroheptyl methacrylate（FM） as functional monomer. Ihe effects of oxidant, initiator and monomers on surface sizing were studied.q-he optimum synthesis conditions are as follows： the dosage of modified starch being 8%, FM being 0.3%, DM being 0.90/0, AM being 3%, K2S2O8 being 0.5%, and m（St）：m（BA） dosage being 2.5. And through testing the properties of papers, the size effect of modified starch graft copolymerization latex is better than that of the same condition of product without FM, particularly the size degree and the tensile strength of paper could improve obviously.

关 键 词：含氟单体 DM 苯乙烯 丙烯酸丁酯 丙烯酰胺 表面施胶剂 

分 类 号：TS727.5[轻工技术与工程—制浆造纸工程]