含氟丙烯酸酯三元共聚乳液的制备及表征  

PREPARATION AND CHARACTREIZATION OF FLUOROALKYL METHACRYLATE COPOLYMER EMULSION

作　　者：林义[1] 余自力[1] 徐彬[1] 

机构地区：[1]四川大学分析测试中心,四川成都610064

出　　处：《高分子材料科学与工程》2005年第5期63-66,共4页Polymer Materials Science & Engineering

基　　金：国家863计划项目(2003AA31X020)

摘　　要：采用十二烷基硫酸钠(SDS)和聚乙二醇辛基苯基醚(OP乳化剂)组成的复合乳化剂,制备了甲基丙烯酸1,1,5-三氢全氟戊酯(OFPM A)-丙烯酸丁酯(BA)-甲基丙烯酸甲酯(MM A)三元共聚乳液。通过FT-IR、1H-NM R对共聚物进行了表征。对乳液的稳定性、乳胶膜的耐溶剂性进行了研究,用接触角法研究了共聚物膜表面的性质。结果表明,加入含氟丙烯酸酯单体进行共聚合反应时,所得共聚物膜的表面自由能与无氟共聚物膜比较有显著的降低,当含氟单体的加入量达到质量分数为20%时,所得膜的表面自由能降低到25.12 m J/m2。对该含氟膜进行退火处理后,其表面自由能进一步降低到23.52 m J/m2。Copolymer latex containing OFPMA was prepared by emulsion polymerization of OFPMA with BA and MMA using mixture of SDS and OP emulsifying agent as emulsifier. The copolymer was characterized by FT-IR and ^1H-NMR techniques. The solvent resistance of latex films was investigated and the stability of latex was observed. Surface properties of the copolymer film were investigated by contact angle measurement. The results show that the surface free energy of copolymer film decreases drastically and can reach 25. 12 mJ/m^2 when the concentration of OFPMA used in copolymerization is 20%. Through annealing treatment, the surface free ener- gy of copolymer film decreases to 23. 52 mJ/m^2.

关 键 词：甲基丙烯酸1 1 5-三氢全氟戊酯 含氟丙烯酸酯 乳液共聚 甲基丙烯酸酯 表面自由能 

分 类 号：TQ316.334[化学工程—高聚物工业]