无皂法制备有机硅/丙烯酸酯共改性酪素皮革涂饰剂  

Organic Silicone/Acrylate Co-modified Casein Leather Finishing Agent with Soap-free Emulsion Polymerization

作　　者：乔滢寰[1] 马建中[1] 徐群娜[1] 周建华[1] 

机构地区：[1]陕西科技大学资源与环境学院,陕西西安710021

出　　处：《中国皮革》2013年第3期30-34,共5页China Leather

基　　金：973前期研究专项项目(2011CB612309);国家自然科学基金资助项目(21176149);国家自然科学基金资助项目(51073091);陕西科技大学研究所创新基金项目(YC0608)

摘　　要：以酪素、甲基丙烯酸甲酯、丙烯酸丁酯、γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)为主要原料,采用无皂法制备了有机硅/丙烯酸酯共改性酪素皮革涂饰剂。考察了KH-570的加入方式和用量对乳液稳定性(离心稳定性、耐化学稳定性及水稀释稳定性)及其成膜性能(抗张强度、断裂伸长率、吸水率)的影响,并采用红外(FT-IR)、动态激光光散射(DLS)和透射电镜(TEM)对乳液进行表征。结果表明:采用半连续种子乳液聚合法,KH-570用量为所加总固物质量的6%时,乳液及胶膜的综合性能相对最好。FT-IR结果显示,KH-570成功接枝到酪素分子上;DLS和TEM结果表明,乳胶粒有明显的核壳结构,粒径为纳米级,约为63.47nm左右,且大小分布均一。The leather finishing agent of organic silicone/acrylate modified casein was synthesized by soap - free emulsion pol- ymerization using casein, methyl methacrylate, butyl acrylate, y- methacryloxy propyl trimethoxy silane （KH -570） as the main raw materials. The effects of the amount and adding method of KH - 570 on the emulsion stability （ centrifugal stability, chemical resistance and dilution stability） and film properties （tensile strength, elongation at break, water absorption rate） were investiga- ted. The structure of polymer was characterized by fourier transformer infrared spectroscopy （FT -iR） ,dynamic laser light scatter- ing （DES） and transmission electron microscopy （TEM） . The results show that when emulsion is prepared by semi - continuous seed emulsion polymerization and mass fraction of KH - 570 is 6%, emulsion and its film has reversely best combination property. - IR results show that KH - 570 is successfully grafted to the casein molecules. DES graph and TEM image show that particle of organic silicone/acrylate co - modified casein exhibited evident core - shell structure and particle size is about 63.47nm with u- niform distribution.

关 键 词：酪素 有机硅 无皂乳液 皮革涂饰剂 

分 类 号：TS529.5[轻工技术与工程—皮革化学与工程]