| 胶原溶液流变性能的研究 |
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| 引用本文： | 肖世维,林海,但卫华.胶原溶液流变性能的研究[J].功能材料,2012(2):170-173. |
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| 作者姓名： | 肖世维 林海 但卫华 |
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| 作者单位： | 四川大学制革清洁技术国家工程实验室;四川大学生物医学工程技术研究中心 |
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| 基金项目： | 成都市科技计划资助项目(10GGYB345SW-023) |
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| 摘 要： | 以纯化猪皮为原料提取胶原,配制不同浓度胶原溶液研究其流变性能,采用幂律方程拟合流动曲线,拟合程度非常高,以黏流活化能分析了黏度对温度的依赖性。讨论了胶原溶液浓度、剪切速率、温度对其黏度的影响。结果表明,该胶原溶液具有假塑性流体特征,浓度越高,非牛顿指数n越小,假塑性越强,黏度随剪切速率增大而下降的程度越明显。相同剪切速率下,温度升高,各浓度胶原溶液黏度下降。浓度越高,黏流活化能越大,对温度越敏感。
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| 关 键 词： | 胶原 流变性能 黏度 |
Study on rheological behaviors of collagen |
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| XIAO Shi-wei,LIN Hai,DAN Wei-hua.Study on rheological behaviors of collagen[J].Journal of Functional Materials,2012(2):170-173. |
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| Authors: | XIAO Shi-wei LIN Hai DAN Wei-hua |
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| Affiliation: | 1,2(1.National Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University,Chengdu 610065,China; 2.Biomedical Engineering Technology Research Centre,Sichuan University,Chengdu 610041,China) |
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| Abstract: | In this study,the rheological behaviors of collagen solutions prepared with collagen extracted from pigskin were studied at different concentration.By means of fitting the Ostwald de Wale model and based on the good fitting degree,the dependence of viscosity on collagen concentration,temperature and shear rates was analyzed.Results revealed that this collagen solution has pseudo-plastic behavior.And the concentration of solutions increased,the value of non-Newton index get smaller,the pseudo-plastic behavior appeared more obviously.Viscosity of different concentration declined increasingly with increasing shear rate and temperature.The higher concentration it is,the higher viscosity it has,the larger the value of Eη is and the more sensitive it is to temperature. |
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| Keywords: | collagen rheological behavior viscosity |
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