阳离子型含氟聚丙烯酸酯无皂乳液的合成及性能  

Synthesis and Properties of Cationic Fluorinated Polyacrylate Soap-free Latex

作　　者：周建华[1,2] 李艳南[1] 马建中[1,2] 

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]陕西农产品加工技术研究院,陕西西安710021

出　　处：《精细化工》2016年第11期1254-1259,共6页Fine Chemicals

基　　金：国家自然科学基金(21206088);陕西省教育厅产业化培育项目(16JF0060);陕西省重点科技创新团队(2013KCT-08);陕西科技大学科研团队项目(TD12-03)~~

摘　　要：以可逆加成断裂链转移(RAFT)聚合合成的聚甲基丙烯酸-N,N-二甲氨基乙酯-b-聚丙烯酸六氟丁酯(PDMAEMA-b-PHFBA)为稳定剂,通过无皂乳液聚合技术合成了阳离子型含氟聚丙烯酸酯无皂乳液。用FTIR、1HNMR、TEM、DLS对乳胶粒子和聚合物的结构进行了表征。结果表明,当PDMAEMA-b-PHFBA的用量为总加料质量的2.4%时,乳液的稳定性好,Zeta电位达+57.8 m V,转化率达97.6%,乳胶粒具有明显的核壳结构,粒径分布指数为0.058。将阳离子型含氟聚丙烯酸酯无皂乳液用于皮革涂饰后,随着丙烯酸六氟丁酯用量的增加,涂饰后的皮革对水和二碘甲烷的接触角逐渐增加,当丙烯酸六氟丁酯用量为总单体质量的10%时,涂饰后的皮革对水的接触角为125°,对二碘甲烷的接触角为81.5°。Poly [2-（ N,N-dimethyl amino） ethyl methacrylate]-b-poly（ hexafluorobutyl acrylate）（ PDMAEMA-b-PHFBA） was synthesized by reversible addition fragamentation chain transfer（ RAFT）polymerization. Then,it was used as a stabilizer to prepare cationic fluorinated polyacrylate soap-free latex via soap-free emulsion polymerization. The latex particle and the polymer structure were characterized by means of FTIR spectroscopy,1HNMR spectroscopy,TEM and DLS,respectively. The results showed that when the dosage of PDMAEMA-b-PHFBA was 2. 4%（ based on total mass of all materials）,the latex displayed excellent stability and high monomer conversion（ 97. 6%）,Zeta potential reached ＋ 57. 8 m V. The latex particle had core-shell structure and narrow particle size distribution with a particle size distribution index（ 0. 058）. The leather finished by cationic fluorinated soap-free latex showed an obvious improvement of water-proof and oil-proof properties. The contact angles with water and diiodomethane gradually increased with increase of hexafluorobutyl acrylate amount. Meanwhile,when hexafluorobutyl acrylate amount was 10%（ based on total mass of all monomers）,the contact angles with water and diiodomethane was up to 125° and 81. 5°,respectively.

关 键 词：阳离子型含氟聚丙烯酸酯 无皂乳液 RAFT聚合 皮革涂饰剂 

分 类 号：TS529.5[轻工技术与工程—皮革化学与工程]