| 高含量再生丝素蛋白水溶液的热性能研究 |
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| 引用本文： | 解芳,刘一鸣,梁浩,金真,袁雪英.高含量再生丝素蛋白水溶液的热性能研究[J].太原理工大学学报,2010,41(1). |
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| 作者姓名： | 解芳 刘一鸣 梁浩 金真 袁雪英 |
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| 作者单位： | 1. 惠州学院,化学工程系,广东,惠州,516007
2. 山西省分析测试中心,太原,030006 |
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| 基金项目： | 广东高校优秀青年创新人才培育项目，惠州学院自然科学研究基金 |
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| 摘 要： | 用差示扫描量热仪(DSC),对不同含量的再生丝素蛋白水溶液(质量分数为12%~42%),以及同一含量不同剪切速率(1 000 s-1和2 000 s-1)下溶液热性能的变化进行了对比研究。结果表明,随着含量的增大,再生丝素蛋白水溶液发生相转变的温度逐渐降低;同样,经剪切后的溶液发生相转变的温度均向低温漂移,且随着剪切作用的加强,向低温的漂移越明显。试验表明,丝素水溶液含量的增加和剪切作用可加速溶液从无规线团或α-螺旋向β-折叠构象的转变速度,且随着剪切速率的提高,构象转变的速度也加快。
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| 关 键 词： | 再生丝素 热性能 构象转变 |
The Study on the Thermal Properties of Concentrated Aqueous Solutions of Regenerated Silk Fibroin |
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| XIE Fang,LIU Yi-ming,LIANG Hao,JIN Zhen,YUAN Xue-ying.The Study on the Thermal Properties of Concentrated Aqueous Solutions of Regenerated Silk Fibroin[J].Journal of Taiyuan University of Technology,2010,41(1). |
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| Authors: | XIE Fang LIU Yi-ming LIANG Hao JIN Zhen YUAN Xue-ying |
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| Institution: | XIE Fang1,LIU Yi-ming2,LIANG Hao1,JIN Zhen1,YUAN Xue-ying1 (1.Department of Chemical Engineering,Huizhou University,Huizhou 516007,China,2.Shanxi Institute of Measuring , Analysis,Taiyuan 030006,China) |
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| Abstract: | Effect of different shear rate (1 000 s~(-1) and 2 000 s~(-1)) and different concentration(12%～42%) on the thermal properties of concentrated aqueous solutions of regenerated silk fibroin was studied by differential scanning calorimetry (DSC) . It was found that the conformation of silk fibroin was changed from random coil and α-helix to β-sheet structure by shearing and with increased concentration. And higher shear rate resulted in more conformational transformation. |
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| Keywords: | regenerated silk fibroin thermal properties conformational transition |
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