以甲基丙烯酸六氟丁酯（HM）为含氟单体，采用细乳液聚合法合成了含氟丙烯酸酯无皂乳液。利用红外光谱（FT-IR）、核磁共振（1H-NMR）、差示扫描量热（DSC）和透射电镜（TEM）表征了共聚物的结构和形貌，考察了聚合温度、乳化荆用量和引发剂用量对细乳液聚合动力学的影响，通过接触角和吸水率表征了合氟丙烯酸酯共聚物乳胶膜的表面性能。结果表明，当烯丙氧基壬基酚聚氧乙烯（10）醚硫酸铵（DNs86）用量（占单体总量）为2．5％，引发剂用量为0．5％，反应温度为70℃时合成的含氟丙烯酸酯乳液稳定性好，乳胶粒平均粒径为180nm涂膜耐水性随氟单体含量的增加而提高。
The soap-free fluorinated polyarcylate copolymer emulsion was synthesized by miniemulsion polymerization with hexafluorobutyl methacrylate (HFMA) as fluorinated acrylate monomer. The structure and morphology of the products were confirmed by FT-IR,1H-NMR,DSC and TEM. Effects of reaction temperature, concentrations of the emulsifier and initiator on the kinetics of the miniemulsion polymerization were also investigate& The surface properties of the copolymer films were characterized by the contact angle and water absorbance measurement. The results show that the copolymer emulsion has the good stability when the temperature is 70 ℃, DNS-86 is 2.5%, and AIBN is 0.5%. The number average particle sizes of the latexes is 180 nm and the water resistance of films are markedly improved with the increase of HFMA amount.
参考文献
| [1] | 梁军艳,和玲,郑元锁.核壳型含氟丙烯酸酯共聚物的合成及性能[J].高等学校化学学报,2008(07):1473-1478. |
| [2] | Massimo Lazzari;Mauro Aglietto;Valter Castelvetro;Oscar Chiantore .Photochemical stability of partially fluorinated acrylic protective coatings IV. Copolymers of 2,2,2-trifluoroethyl methacrylate and methyl α-trifluoromethyl acrylate with vinyl ethers[J].Polymer Degradation and Stability,2003(2):345-351. |
| [3] | Linemann Reinhard F.;Brandsch Rainer;Bar Georg;Ritter Wolfgang;Muelhaupt Rolf;Malner Thomas E. .Latex blends of fluorinated and fluorine-free acrylates: emulsion polymerization and tapping mode atomic force microscopy of film formation[J].Macromolecules,1999(6):1715-1721. |
| [4] | 张庆华,詹晓力,陈丰秋.氟代丙烯酸酯三元共聚物细乳液的合成与表征[J].高等学校化学学报,2005(03):575-579. |
| [5] | Zhang QH;Zhan XL;Chen FQ .Miniemulsion polymerization of a fluorinated acrylate copolymer: Kinetic studies and nanolatex morphology characterization[J].Journal of Applied Polymer Science,2007(1):641-647. |
| [6] | 郭小丽,邱俊英,安璐,易昌凤,徐祖顺.微波辐射细乳液聚合制备含氟丙烯酸酯乳液[J].高分子材料科学与工程,2009(04):16-19. |
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