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首页> 外文期刊>Journal of Applied Polymer Science >Photo-induced emulsion polymerization of vinyl acetate in the presence of poly(oxyethylene)(10) nonyl phenyl ether ammonium sulfate, an anionic emulsifier (I)
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Photo-induced emulsion polymerization of vinyl acetate in the presence of poly(oxyethylene)(10) nonyl phenyl ether ammonium sulfate, an anionic emulsifier (I)

机译：阴离子型乳化剂（I）在聚（氧乙烯）（10）壬基苯基醚硫酸铵的存在下乙酸乙烯酯的光诱导乳液聚合

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摘要

Poly(vinyl alcohol) (PVA) having a number-average degree of polymerization of 7000 was obtained from the poly(vinyl acetate) (PVAc) having a number-average degree of polymerization 9000, a product of photo-induced emulsion polymerization of vinyl acetate (VAc), carried out at 0degreesC, using poly(oxyethylene)(10) nonyl phenyl ether ammonium sulfate as an anionic emulsifier. It was found that 100% conversion is always attained in the whole range of the investigation and the emulsifier plays an important role in the initiation process. The applicability of the photo-induced emulsion polymerization system to a relatively large-scale production was tested by using an apparatus equipped with an internal high-pressure Hg lamp with a capacity of several hundred grams per batch under nitrogen atmosphere. It was found that both the rate of polymerization and the degree of polymerization of resulting polymers are slightly lower than those obtained from corresponding small-scale polymerizations prepared on a high vacuum system because of the presence of oxygen. (C) 2002 Wiley Periodicals, Inc. [References: 27]
机译：从数均聚合度为9000的聚乙酸乙烯酯（PVAc）（乙烯基的光诱导乳液聚合的产物）获得数均聚合度为7000的聚乙烯醇（PVA）。乙酸（VAc），在0℃下使用聚（氧乙烯）（10）壬基苯基醚硫酸铵作为阴离子乳化剂进行。发现在整个研究范围内总能达到100％的转化率，并且乳化剂在引发过程中起着重要的作用。通过使用装备有内部高压汞灯的设备在氮气氛下测试该光致乳液聚合体系对较大规模生产的适用性，该设备配备有每批次数百克的内部高压汞灯。已经发现，由于氧气的存在，所得聚合物的聚合速率和聚合度均略低于由在高真空系统上制备的相应的小规模聚合获得的聚合速率和聚合度。 （C）2002 Wiley Periodicals，Inc. [参考：27]

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