柞蚕丝素/聚乳酸复合膜的制备及性能研究

doi:10.7506/spkx1002-6630-201024030

食品科学 ›› 2010, Vol. 31 ›› Issue (24): 142-146.doi: 10.7506/spkx1002-6630-201024030

柞蚕丝素/聚乳酸复合膜的制备及性能研究

付田霞，战孟娇，王新现

沈阳农业大学食品学院

收稿日期:2010-07-30 修回日期:2010-11-03 出版日期:2010-12-25 发布日期:2010-12-29
通讯作者: 付田霞 E-mail:xzhm555@126.com

Preparation and Properties of Antheraea pernyi Silk Fibroin-Polylactic Acid Composite Film

FU Tian-xia，ZHAN Meng-jiao，WANG Xin-xian

College of Food Science, Shenyang Agricultural University, Shenyang 100866, China

Received:2010-07-30 Revised:2010-11-03 Online:2010-12-25 Published:2010-12-29
Contact: FU Tian-xia E-mail:xzhm555@126.com

摘要/Abstract

摘要：

利用溶液共混法将柞蚕丝素添加到聚乳酸基体中，制备柞蚕丝素/ 聚乳酸复合膜，研究柞蚕丝素对聚乳酸塑料性能的改善。结果表明：柞蚕丝素/ 聚乳酸复合膜的成膜特性受制备柞蚕丝素所需磷酸水解时间、柞蚕丝素水溶液质量分数、干燥温度、增塑剂聚乙二醇(400)添加质量分数等因素的影响；在添加磷酸水解3h 的柞蚕丝素水溶液的质量分数2% 时制备的柞蚕丝素/ 聚乳酸复合膜表现出的综合性能指标较好，其拉伸强度19.75～23.89MPa、断裂拉伸应变37.42%～48.20%，具有优异的防水阻油性能；在添加磷酸水解1h 的柞蚕丝素水溶液(质量分数4%)时制备的复合膜对UV-B 区间的紫外遮蔽效果最好，紫外线透过率仅为9.4%～12.7%。经红外光谱测试，柞蚕丝素与聚乳酸基体复合效果良好。

关键词: 聚乳酸, 柞蚕丝素, 复合膜

Abstract:

A kind of ApSF-PLA composite film was prepared by adding Antheraea pernyi silk fibroin (ApSF) to polylactic acid (PLA) matrix through solution blending method. The effect of ApSF on the properties of PLA plastics was investigated. The results showed that the characteristics of ApSF-PLA composite film were affected by phosphoric acid hydrolysis time of ApSF, ApSF-water ratio, drying temperature, and plasticizer PEG-400 addition amount. The optimal preparation conditions were phosphoric acid hydrolysis time for ApSF of 3 h, ApSF-water ratio of 2%. Under the optimal conditions, the ApSF-PLA composite film exhibited better comprehensive properties with tensile strength of 19.75－23.89 MPa, and tensile strain of 37.42%－48.20%. The film also revealed better waterproof and anti-oil performance. Moreover, the ApSF-PLA film exhibited the best UV-shielding effect in UV-B range when ApSF-water ratio of 45 and phosphoric acid hydrolysis time of 1 h. UV transmittance of the prepared composite film at the optimal conditions was 9.4%－12.7%. An excellent composite effect of the ApSF-PLA film was achieved through IR analysis.

Key words: polylactic acid, Antheraea pernyi silk fibroin, composite film

中图分类号:

TB332

付田霞，战孟娇，王新现. 柞蚕丝素/聚乳酸复合膜的制备及性能研究[J]. 食品科学, 2010, 31(24): 142-146.

FU Tian-xia，ZHAN Meng-jiao，WANG Xin-xian. Preparation and Properties of Antheraea pernyi Silk Fibroin-Polylactic Acid Composite Film[J]. FOOD SCIENCE, 2010, 31(24): 142-146.

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柞蚕丝素/聚乳酸复合膜的制备及性能研究

Preparation and Properties of Antheraea pernyi Silk Fibroin-Polylactic Acid Composite Film

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