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首页> 外文期刊>Journal of Applied Polymer Science >Styrene miniemulsion polymerization stabilized by carboxylated polyurethane. II. Kinetics
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Styrene miniemulsion polymerization stabilized by carboxylated polyurethane. II. Kinetics

机译：通过羧化聚氨酯稳定的苯乙烯细乳液聚合。二。动力学

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摘要

A styrene miniemulsion was prepared using carboxylated polyurethane as the sole costabilizer and sodium dodecyl sulfate as the surfactant. The effects of the amount of carboxylated polyurethane, the amount of the initiator and surfactant, the presence of a water-phase inhibitor (sodium nitrite), and the reaction temperature on the kinetics of the miniemulsion polymerization were investigated. The evolution of the particle size during the polymerization was measured. The results show that the polymerization rate was proportional to the 0.21 power of the surfactant concentration and the 0.30 power of azobisisobutyronitrile. The droplet nucleation and homogeneous nucleation were found to be coexistent in the polymerization. The hydrophility of the particle surface plays a key role in the nucleation of the particle and, therefore, has an important effect on the kinetics of the polymerization. (C) 2003 Wiley Periodicals, Inc. [References: 32]
机译：使用羧化聚氨酯作为唯一的稳定剂和十二烷基硫酸钠作为表面活性剂制备苯乙烯细乳液。研究了羧化聚氨酯的用量，引发剂和表面活性剂的用量，水相抑制剂（亚硝酸钠）的存在以及反应温度对细乳液聚合动力学的影响。测量了聚合过程中粒度的变化。结果表明，聚合速率与表面活性剂浓度的0.21幂和偶氮二异丁腈的0.30幂成正比。发现液滴成核和均相成核在聚合中并存。颗粒表面的亲水性在颗粒成核中起关键作用，因此对聚合动力学具有重要影响。 （C）2003 Wiley Periodicals，Inc. [参考：32]

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