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首页> 美国卫生研究院文献>Materials >Preparation and Characterization of Soap-Free Vinyl Acetate/Butyl Acrylate Copolymer Latex
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Preparation and Characterization of Soap-Free Vinyl Acetate/Butyl Acrylate Copolymer Latex

机译：无皂醋酸乙烯酯/丙烯酸丁酯共聚物胶乳的制备与表征

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摘要

The soap-free emulsion of vinyl acetate (VAc)/butyl acrylate (BA) copolymer was prepared by a semi-continuous and pre-emulsification polymerization method, using ammonium sulfate allyloxy nonylphenoxy poly(ethyleneoxy) (10) ether (DNS-86) as a reactive emulsifier. The effects of DNS-86 on the stability of the emulsion and the properties of the latex film were investigated. The infrared spectrum, thermal stability, glass transition temperature and micromorphology of latex were also studied. The results showed that the emulsion had the best stability and the conversion rate reached a maximum of 98.46% when the DNS-86 amount was 4 wt % of the total amount of monomers. Compared with the PVAc latex synthesized with octylphenol polyoxyethylene ether (10) (OP-10), the latex prepared with DNS-86 has higher thermal stability and ionic stability, whereas the latex film has better water resistance.
机译：使用硫酸铵烯丙氧基壬基苯氧基聚（乙烯氧基）（10）醚（DNS-86）通过半连续预乳化聚合方法制备乙酸乙烯酯（VAc）/丙烯酸丁酯（BA）共聚物的无皂乳液作为反应性乳化剂。研究了DNS-86对乳液稳定性和乳胶膜性能的影响。还研究了胶乳的红外光谱，热稳定性，玻璃化转变温度和微观形貌。结果表明，当DNS-86用量为单体总量的4 wt％时，乳液具有最佳的稳定性，转化率最高达到98.46％。与用辛基酚聚氧乙烯醚（10）（OP-10）合成的PVAc乳胶相比，用DNS-86制备的乳胶具有更高的热稳定性和离子稳定性，而乳胶膜具有更好的耐水性。

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