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。
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.
参考文献
| [1] | 但卫华,周文常,曾睿,廖隆理,但年华,米贞健,林海,陈驰,曲健健.胶原-壳聚糖共混纺丝液的制备[J].中国皮革,2006(07):35-38. |
| [2] | Park SN;Park JC;Kim HO;Song MJ;Suh H .Characterization of porous collagen/hyaluronic acid scaffold modified by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide cross-linking.[J].Biomaterials,2002(4):1205-1212. |
| [3] | Chen, R.;Huang, C.;Ke, Q.;He, C.;Wang, H.;Mo, X. .Preparation and characterization of coaxial electrospun thermoplastic polyurethane/collagen compound nanofibers for tissue engineering applications[J].Colloids and Surfaces, B. Biointerfaces,2010(2):315-325. |
| [4] | Hsu PW;Salgado CJ;Kent K .Evaluation of porcine dermal collagen (Permacol) used in abdominal wall reconstruction.[J].Journal of plastic, reconstructive & aesthetic surgery: JPRAS,2009(11):1484-1489. |
| [5] | Kabiri, M.;Emami, S.H.;Rafinia, M.;Tahriri, M. .Preparation and characterization of absorbable hemostat crosslinked gelatin sponges for surgical applications[J].Current applied physics: the official journal of the Korean Physical Society,2011(3):457-461. |
| [6] | 李季衡,杨维,李国英.胶原/甘油共混溶液的流变性能[J].功能材料,2009(08):1355-1358. |
| [7] | 王香梅,张菁,王庆瑞.胶原/壳聚糖复合溶胀液的流变特性[J].高分子材料科学与工程,2009(05):64-66. |
| [8] | 来国莉,李洋,杜宗良,李国英.PVA/胶原共混溶液的流变性能[J].四川大学学报（工程科学版）,2008(04):83-88. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%