自交联型含氟丙烯酸酯共聚物的合成与表征  

Cross-linking and Characterization of Perfluorinated Acrylate Copolymers

作　　者：杨婷婷[1] 彭慧[1] 姚丽[1] 程时远[1] IN Jun Park 

机构地区：[1]湖北大学化学与材料科学学院,武汉430062 [2]韩国化学技术研究所化工系

出　　处：《应用化学》2006年第11期1243-1248,共6页Chinese Journal of Applied Chemistry

基　　金：国际科技合作交流项目[2001]193

摘　　要：以乙烯基三乙氧基硅烷(VTES)作为交联剂,采用无皂乳液聚合制备得到2-(N-丙基全氟辛基磺酰胺)乙基丙烯酸酯/甲基丙烯酸甲酯/丙烯酸丁酯/2-丙烯酰胺基-2-甲基丙磺酸钠(FA/MMA/n-BA/AMPSNa)自交联型共聚物。分别采用FT-IR、NMR、DSC及SPM技术对该共聚物的结构和表面形貌进行表征和观察,并考察了交联对其物理性能的影响。结果表明,自交联含氟丙烯酸酯共聚物膜的耐水、耐溶剂性能显著提高,吸水率降至10%以下、溶胀率明显下降。共聚物膜对水/油的接触角值随VTES含量先增加后减小,有效缓解接触角滞后,表面自由能交联前后由27.2 mN/m降低到约为14.8 mN/m。Self-crosslinking copolymers based on 2- （N-propylperfluorooctanesulfoamido） ethyl acrylate （ FA）, methyl methacrylate （ MMA ）, n-butyl acrylate （ n-BA ） and sodium 2-acrylamide-2-methyl propanesulfonate （AMPSNa） were synthesized via soap-free emulsion polymerization with vinyl triethoxysilane （VTES） as a crosslinking agent. The structure and surface morphology of the copolymers were characterized by FT-IR, NMR, DSC and SPM, respectively. Further studies focused on the influence of cross-linking on the physical properties of perfluorinated acrylate copolymers. It was found that the water- and solvent-resistance properites were dramatically improved with increase of the extent of cross-linking. With VTES amount increasing, the values of the contact angle for water and oil first increased and then decreased, and the contact angle hysteresis was alleviated. The surface free energy of the FA copolymer films decreased from 27.2 mN/m to about 14.8 mN/m after cross-linking.

关 键 词：含氟丙烯酸酯 自交联 无皂乳液 接触角滞后 

分 类 号：O631.5[理学—高分子化学]