Effects of copolymer composition and free volume change on the miscibility of poly(styrene-co-vinylphenol) with poly(∈-caprolactone)
Effects of copolymer composition and free volume change on the miscibility of poly(styrene-co-vinylphenol) with poly(∈-caprolactone)
复制标题
共聚物组成和自由体积变化对苯乙烯-乙烯基苯酚共聚物与聚ε-己内酯混溶性的影响
DOI：
10.1021/ma010820b
复制
发表时间：
2001
期刊：
影响因子：
5.5
通讯作者：
F. Chang
中科院分区：
文献类型：
--
作者：
S. Kuo;F. Chang
合成了一系列聚苯乙烯-乙烯基苯酚(PSOH)共聚物，并对其进行了表征。用差示扫描量热法和傅里叶变换红外光谱研究了部分羟化聚苯乙烯与聚己内酯(PCL)共混物的相容性和氢键。差示扫描量热法研究表明，乙烯基苯酚含量大于13mol%的共聚物与PCL完全相容。用傅立叶变换红外光谱对固相中氢键羰基的含量进行了定量分析，并观察到热行为与红外光谱结果之间的良好相关性。根据Painter-−-Coleman缔合模型和二元相互作用模型预测了共混体系的临界乙烯基苯酚含量为0.1mol%。实验结果与理论预测的差异可能是由于该共混体系的自由体积显著增加所致。
A series of poly(styrene-co-vinylphenol) (PSOH) copolymers were prepared and characterized. The miscibility and hydrogen bonding between the partially hydroxylated polystyrene with poly(e-caprolactone) (PCL) blend were investigated by differential scanning calorimetry and Fourier transform infrared spectroscopy. The copolymers containing higher than 13 mol % vinylphenol were found to be fully miscible with PCL according to differential scanning calorimetry studies. Quantitative analyses on the fraction of hydrogen-bonded carbonyl groups in the solid state were made by FTIR spectroscopy, and good correlations between thermal behaviors and infrared results were observed. The critical vinylphenol content of 0.1 mol % in PSOH copolymer for the blend to be miscible was predicted from the Painter−Coleman association model and binary interaction model. The discrepancy between the experimental result and theoretical prediction is probably caused by significant free volume increase in this blend system, which is a...