Study on molecular interaction behavior, and thermal and mechanical properties of polyacrylic acid and lactose blends
Study on molecular interaction behavior, and thermal and mechanical properties of polyacrylic acid and lactose blends
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DOI：
10.1002/app.2037
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发表时间：
2001-11-21
影响因子：
3
通讯作者：
Kurth, MJ
中科院分区：
文献类型：
--
作者：
Fan, XD;Hsieh, YL;Kurth, MJ
采用傅里叶变换红外光谱、差示扫描量热法、热重分析和应力-应变测试研究了聚丙烯酸（PAA）与乳糖或乳糖衍生物多元醇的共混物。PAA/乳糖共混物的红外光谱在1700 cm和3400 cm（-1）附近存在位移，表明两种化合物之间存在分子间氢键作用。DSC数据显示PAA和乳糖在低于17%乳糖时是可混溶的。在乳糖含量较高时，由于乳糖自缔合而发生相分离。与PAA/乳糖共混物相比，PAA/多元醇共混物的氢键作用要弱得多。所有研究的共混体系表现出广泛的降低其热和机械性能。结果表明，乳糖和多元醇不能作为有效的添加剂来提高PAA的物理性能。(C)John Wiley & Sons，Inc.
Polyacrylic acid (PAA) blending with lactose or polyol, a lactose derivative, is investigated by Fourier transform infrared, differential scanning calorimetry (I)SC), thermogravimetric analysis (TGA), and stress-strain tests. The IR spectra of PAA/lactose blends exist shifting around 1700 cm and 3400 cm(-1), implying intermolecular hydrogen-bonding interaction between two compounds. DSC data show that PAA and lactose are miscible below 17% lactose. At the higher content of lactose, phase separation occurs due to lactose self-association. Comparing to PAA/lactose blends, PAA/polyol systems show much weaker hydrogen-bonding interaction effect. All blending systems studied exhibit extensive reduction in their thermal and mechanical properties. The result suggests that both lactose and polyol cannot be used as effective additives to enhance the physical properties of PAA. (C) 2001 John Wiley & Sons, Inc.