Interfacial Rheology of Natural Silk Fibroin at Air/Water and Oil/Water Interfaces

被引：61

作者：

Wang, Lijun ^{[1
]}

Xie, Hongen ^{[1
]}

Qiao, Xiuying ^{[1
]}

Goffin, An ^{[2
]}

Hodgkinson, Tom ^{[3
]}

Yuan, Xuefeng ^{[3
]}

Sun, Kang ^{[1
]}

Fuller, Gerald G. ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[2] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[3] Univ Manchester, Manchester Interdisciplinary Bioctr, Manchester M1 7DN, Lancs, England

来源：

LANGMUIR | 2012年 / 28卷 / 01期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

AIR-WATER-INTERFACE; BETA-LACTOGLOBULIN; CRYSTAL-STRUCTURE; SHEAR; SURFACTANTS; EMULSIONS; FIBER; BIOCOMPOSITES; ORIENTATION; ADSORPTION;

D O I：

10.1021/la2041373

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The interfacial viscoelastic behavior of natural silk fibroin at both the air/water and oil/water interfaces is reported. This natural multiblock copolymer is found to be strongly amphiphilic and forms stable films at these interfaces. The result is an interfacial layer that is rheologically complex with strong surface elastic, moduli that are only slightly frequency-dependent. The kinetics of surface viscoelastic evolution are reported as functions of time for various concentrations of the spread films. Films deposited by Langmuir-Blodgett deposition were studied by scanning electron microscopy (SEM) to reveal a fibrous structure at the interface. The production of stable O/W emulsions by silk fibroin further confirms the generation of the elastic films at the oil/water interfaces.

引用

页码：459 / 467

页数：9

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