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首页> 外文期刊>Journal of Applied Polymer Science >Photopolymerization kinetics of hyperbranched acrylated aromatic polyester
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Photopolymerization kinetics of hyperbranched acrylated aromatic polyester

机译：超支化丙烯酸酯化芳族聚酯的光聚合动力学

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摘要

The influences of the irradiation temperature, comonomer content, sample thickness, and photoinitiator concentration on the polymerization kinetics of hyper-branched acrylated aromatic polyester (HAAPE) were investigated with photo-differential scanning calorimetry and IR measurements. The maximum photopolymerization rate increased with the temperature rising up to 110degreesC but decreased beyond 110degreesC. An activation energy of 16 kj mol(-1) for the photopolymerization was obtained below 110degreesC from an Arrhenius plot, but it was negative beyond 120degreesC. A remarkable synergistic effect between HAAPE and the comonomer trimethylolpropane triacrylate with a molar fraction of around 0.4 was observed from a photopolymerization kinetic study of the resins. The final unsaturation conversion in an ultraviolet-cured film decreased with the sample thickness, and this became more remarkable as the photoinitiator concentration increased. (C) 2003 Wiley Periodicals, Inc. [References: 12]
机译：通过光差扫描量热法和红外光谱研究了辐照温度，共聚单体含量，样品厚度和光引发剂浓度对超支化丙烯酸酯化芳族聚酯（HAAPE）聚合动力学的影响。随着温度升高至110℃，最大光聚合速率增加，但超过110℃则降低。从Arrhenius图获得低于110摄氏度的光聚合活化能为16 kj mol（-1），但超过120摄氏度则为负。从树脂的光聚合动力学研究中观察到HAAPE与摩尔分数为约0.4的共聚单体三羟甲基丙烷三丙烯酸酯之间具有显着的协同作用。紫外线固化膜中的最终不饱和转化率随样品厚度的增加而降低，并且随着光引发剂浓度的增加，这一点变得更加明显。 （C）2003 Wiley Periodicals，Inc. [参考：12]

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