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首页> 外文期刊>Journal of Applied Polymer Science >Emulsion polymerization of styrene under pulsed microwave irradiation
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Emulsion polymerization of styrene under pulsed microwave irradiation

机译：脉冲微波辐射下苯乙烯的乳液聚合

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We performed the emulsion polymerization of styrene successfully with potassium persulfate (KPS) as an initiator and sodium dodecylsulfonate as an emulsifier under high-power pulsed microwave irradiation (PMI). We investigated the effects of the temperature, the concentration of initiator, and various parameters of PMI (i.e., irradiation power, duty cycle, irradiation energy, and pulse width) on the polymerization. The results indicated that PMI, compared to conventional heating (CH), caused a significant increase in the decomposition rate of KPS (2.4 times higher than that under CH at about 70degreesC) and in the amount of particles (5 times higher than that under CH); consequently, the polymerization rate was effectively enhanced. For initiator concentrations of 0.10 and 0.20 wt %, the enhancement of the polymerization rate under PMI was 129 and 38% greater, respectively, than that under CH. The glass-transition temperature and the regularity composition of the polymers under PMI and CH showed no difference, which indicated that PMI had little effect on the physical properties and microstructure of the polymer. (C) 2003 Wiley Periodicals, Inc. [References: 19]
机译：我们在高功率脉冲微波辐射（PMI）下，以过硫酸钾（KPS）为引发剂和十二烷基磺酸钠为乳化剂成功地进行了苯乙烯的乳液聚合。我们研究了温度，引发剂浓度和PMI的各种参数（即辐照功率，占空比，辐照能量和脉冲宽度）对聚合的影响。结果表明，与常规加热（CH）相比，PMI导致KPS的分解速率（在70摄氏度左右比K下分解的分解率高2.4倍）和颗粒数量（比在CH下分解的分解物高5倍）显着增加。 ）;因此，有效地提高了聚合速率。对于0.10和0.20wt％的引发剂浓度，在PMI下的聚合速率的提高分别比在CH下的聚合速率的提高129和38％。在PMI和CH下，聚合物的玻璃化转变温度和规则性组成没有差异，表明PMI对聚合物的物理性能和微观结构影响很小。 （C）2003 Wiley Periodicals，Inc. [参考：19]

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