微乳液
材料科学
聚合
丙烯酸树脂
高分子化学
十六烷
丙烯酸丁酯
丙烯酸
丙烯酸酯
化学工程
奥斯特瓦尔德成熟
链式转移
聚合物
共聚物
甲基丙烯酸甲酯
复合材料
自由基聚合
化学
涂层
有机化学
纳米技术
工程类
作者
Silmar B. Barrios,Jéssica F. T. C. Petry,Clemens K. Weiss,César Liberato Petzhold,Katharina Landfester
摘要
Waterborne acrylic resins with a solid content higher than 40 wt % were obtained by miniemulsion polymerization of methyl methacrylate, butyl acrylate, and acrylic acid using a hydrocarbon coumarone–indene resin (HCR) as osmotic agent. HCR is a cheap polymer widely used for coatings and pressure-sensitive adhesives. The resin leads to a higher hydrophobicity for the acrylic latex film and acts as osmotic agent in miniemulsion polymerization preventing Ostwald ripening, leading to latexes with particle sizes, size distributions, and stability comparable to those obtained using n-hexadecane as osmotic agent. However, the monomer conversion and molecular weight were lower, indicating the occurrence of a chain-transfer reaction. Atomic force microscopy analysis demonstrated that a smooth film surface with phase-separated morphology was formed when using HCR. Faster film hardness development was achieved with HCR comparing with hexadecane. Compared with market standard in a paint formulation, a similar performance was achieved. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40569.
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