The apparent variability of silkworm (Bombyx mori) silk and its relationship with degumming

被引:32
作者
Belen Perea, Gracia [1 ,2 ]
Solanas, Concepcion [1 ,2 ]
Mari-Buye, Nuria [1 ,2 ]
Madurga, Rodrigo [1 ,2 ]
Agullo-Rueda, Fernando [3 ]
Muinelo, Alfonso [1 ,2 ]
Riekel, Christian [4 ]
Burghammer, Manfred [4 ]
Jorge, Inmaculada [5 ]
Vazquez, Jesus [5 ]
Plaza, Gustavo R. [1 ,2 ]
Torres, Adriana L. [1 ,2 ]
del Pozo, Francisco [1 ]
Guinea, Gustavo V. [1 ,2 ]
Elices, Manuel [1 ,2 ]
Luis Cenis, Jose [6 ]
Perez-Rigueiro, Jose [1 ,2 ]
机构
[1] Univ Politecn Madrid, Ctr Tecnol Biomed, Madrid 28223, Spain
[2] Univ Politecn Madrid, ETSI Caminos Canales & Puertos, Dept Ciencia Mat, E-28040 Madrid, Spain
[3] CSIC, ICMM, Plaza Murillo 2, E-28049 Madrid, Spain
[4] European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France
[5] CNIC, Lab Proteom Cardiovasc, Madrid 28029, Spain
[6] Inst Murciano Invest & Desarrollo Agr & Alimentar, Murcia 30150, Spain
关键词
Silk; Mechanical characterization; X-ray diffraction; Raman spectroscopy; Biomimetics; SPIDER DRAGLINE SILK; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; COMPOSITE FIBERS; ORIENTATION; PROTEINS; ELASTICITY; MICROSCOPY; STRENGTH; SHEETS;
D O I
10.1016/j.eurpolymj.2016.03.012
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
As spun silkworm (Bombyx mori) silk fibers were compared in terms of their tensile behavior and microstructure with fibers subjected to different degumming treatments. Fibers were initially retrieved by forced silting directly from the worms and, either characterized in the as spun condition, or subjected to one of the following treatments: immersion in water, conventional degumming or degumming under longitudinally constrained conditions. Microstructure was assessed by X-ray diffraction and Raman spectroscopy. In addition, polyacrylamide gel electrophoresis was used to determine the influence of degumming on silk at a molecular level. Our study not only shows that degumming represents a major contribution to the accepted idea of silkworm silk as a highly variable material, but also provides new insights in the relationship between microstructure and tensile behavior in these fibers. In particular, it is shown that the arrangement of the hydrogen bond network in fibers subjected to different treatments plays a critical role in determining the mechanical behavior of silkworm silk. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:129 / 140
页数:12
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