天然植物单宁酸交联改性胶原膜

发布时间：2018-04-01 01:08

本文选题：单宁酸　切入点：胶原膜　出处：《皮革科学与工程》2016年06期

【摘要】：采用单宁酸对胶原膜进行改性,考察不同浓度的改性剂(0.4~1.8 g/L)对胶原膜性能的影响,通过测量其热变性温度、吸水率、酶解后的质量保持率及机械强度,来表征改性前后胶原膜性能的变化,结果表明:当单宁酸浓度为1.2 g/L时,改性后膜的性能最优。红外光谱分析表明,单宁酸分子的酚羟基与胶原分子发生了多点氢键结合,并且胶原的三股螺旋结构未被破坏;最佳浓度改性后胶原膜的热稳定性提高,耐酶解性能增强,机械强度增加,但吸水率却降低,说明单宁酸作为改性剂可以有效改善胶原膜的性能。
[Abstract]:The modification of the collagen membrane of tannic acid and modifier effects of different concentration (0.4~1.8 g/L) effect on the properties of collagen membrane, water absorption by measuring the thermal denaturation temperature, quality, enzymatic hydrolysis, retention rate and mechanical strength, change, to characterize the modified collagen membrane performance results show that when the tannic acid the concentration of 1.2 g/L, the optimal performance of the modified membrane. Infrared spectroscopic analysis showed that tannic acid molecule of hydroxyl group and collagen molecules occurred with hydrogen bond, and collagen three helix structure was not damaged; improve the thermal stability of the optimal concentration of modified collagen membrane after enzymolysis resistance, and improves the performance of machinery the strength increases, but the water absorption rate decreased and that performance of tannic acid as modifier can effectively improve the collagen membrane.

【作者单位】：四川大学皮革化学与工程教育部重点实验室;四川大学制革清洁技术国家工程实验室;广西大学环境学院;
【基金】：国家高技术研究发展计划(863计划)项目(No:2013AA065701)
【分类号】：TB383.2

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