Blends of vinylic copolymer with plasticized lignin: Thermal and mechanical properties
Blends of vinylic copolymer with plasticized lignin: Thermal and mechanical properties
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DOI：
10.1002/app.1505
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发表时间：
2001-07-25
影响因子：
3
通讯作者：
Zhu, H
中科院分区：
文献类型：
--
作者：
Feldman, D;Banu, D;Zhu, H
本文介绍了使用增塑剂降低木质素分子内存在的结合力，以克服其与氯乙烯-醋酸乙烯（VC-VAc）共聚物共混物的机械性能的不利影响的研究。采用红外光谱法和差示扫描量热法考察了增塑剂种类和浓度对木质素有机溶剂Alcell塑化效果的影响。结果表明，增塑剂的相容性和增塑剂的效率受溶解度参数的影响较大，其溶解度参数应与木质素的溶解度参数接近。对几种增塑剂、Alcell木质素和VC-VAc共聚物制备的共混物进行了热分析和力学性能测试。发现这些共混物的机械性能变化与木质素分散质量和Alcell木质素增塑剂效率有关。(C) 2001约翰威利父子公司
The article presents an investigation into the use of plasticizers for reducing the degree of association existing within lignin molecules, in order to overcome adverse effects on the mechanical properties of its blends with a vinyl chloride-vinyl acetate (VC-VAc) copolymer. Infrared spectroscopy and differential scanning calorimetry were performed to examine the effect of the plasticizer type and concentration in plasticizing Alcell, an organosolv lignin. The results show that the compatibility and efficiency of a plasticizer are strongly influenced by the solubility parameter, which should be close to that of the lignin. Polyblends prepared with several plasticizers, Alcell lignin, and the VC-VAc copolymer were also investigated by thermal analysis and mechanical testing. Variations in the mechanical properties of these blends were found to correlate with the lignin dispersion quality and with the plasticizer efficiency in Alcell lignin. (C) 2001 John Wiley & Sons, Inc.