| Kappa-卡拉胶和琼脂糖及其共混凝胶的性质与温度的关系 |
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| 引用本文： | 张建新,C.Rochas,M.Rinaudo.Kappa-卡拉胶和琼脂糖及其共混凝胶的性质与温度的关系[J].华东理工大学学报(自然科学版),1990(3). |
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| 作者姓名： | 张建新 C.Rochas M.Rinaudo |
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| 作者单位： | 华东化工学院技术化学物理研究室
(张建新)，法国科学研究中心植物高分子研究所
(C.Rochas)，法国科学研究中心植物高分子研究所(M.Rinaudo) |
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| 摘 要： | 研究了溶液法制备的琼脂糖、Kappa-卡拉胶(Carrageenan)及其共混凝胶的光学、力学等性质与温度的关系。通过旋光值和构象转变热的研究,发现此共混凝胶无论在高温溶液时,还是在低温凝胶态时,均为完全互溶的真溶液。通过力学性质的分析,得知共混凝胶是由两个互相贯穿的均相网络构成的,两个网络之间不存在强烈的互相作用力,所以表现出比较理想的力学加合性。对纯物质和共混物进行的热力学分析表明,凝胶弹性模量随温度的变化受到热效应和网链数变化两个因素的影响。
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| 关 键 词： | 凝胶 多糖 弹性模量 交互作用 热弹性效应 聚合物共混物 |
Temperature Dependence of Properties in Gels of Kappa-Carrageenan,Agarose and Their Blends |
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| Zhang Jianxin,.Temperature Dependence of Properties in Gels of Kappa-Carrageenan,Agarose and Their Blends[J].Journal of East China University of Science and Technology,1990(3). |
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| Authors: | Zhang Jianxin |
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| Abstract: | Gels of agarose, kappa-carrageenan and their blends were studied on the temperature dependence of their physical properties by optical and mechanical methods etc. The changes of optical rotation and Young's modulus were investigated. The phenomena showed that agarose and kappa-carrageenan are miscible both in high temperature solution and in room temperature, forming two freely interpenetrating networks Witlrout strong interaction, so that, the optical rotation and Young's modulus of the blends of two gels were shown to be additive well. Moreover, the elastic force of two pure substances and their blend was analyzed thermodynamically, with two effects of Young's modulus on temperature. |
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| Keywords: | gel polysaccharide Young's modulus interaction thermoelastic effect polyblends |
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