Kinetics and Molecular Weight Characterization of Poly (2-Ethylhexyl Acrylate) and Liquid Crystal (5CB) Composites
Kinetics and Molecular Weight Characterization of Poly (2-Ethylhexyl Acrylate) and Liquid Crystal (5CB) Composites
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DOI：
10.1080/15421406.2011.572804
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发表时间：
2011-01-01
影响因子：
0.7
通讯作者：
Maschke, U.
中科院分区：
文献类型：
--
作者：
Elqidrea, A.;Meziane, R.;Maschke, U.
采用傅里叶变换红外光谱、差示扫描量热法和凝胶渗透色谱法研究了引发剂和液晶4-氰基-4 '-正戊基联苯（5CB）浓度对丙烯酸2-乙基己酯（2-EHA）自由基聚合的单体转化率和聚合物分子量分布的影响。光引发剂的浓度对单体转化率和聚（2-EHA）的分子量分布都有轻微的影响。增加初始混合物中5CB的量导致转化率、聚合物的玻璃化转变温度、聚合物的摩尔质量和多分散性的降低。
The effect of initiator and liquid crystal 4-cyano-4'-n-pentylbiphenyl (5CB) concentrations on the monomer conversion and molecular weight distributions of the polymer in the free-radical polymerization of 2-ethylhexylacrylate (2-EHA) has been studied and characterized using Fourier transform infrared spectroscopy, differential scanning calorimetry, and gel permeation chromatography. A slight effect of the concentration of the photoinitiator has been observed both on the monomer conversion and the molecular weight distribution of poly (2-EHA). Increasing the amount of 5CB in the initial mixture leads to a decrease of conversion, glass transition temperature of the polymer, molar mass of polymer and of the polydispersity.