Tough synthetic spider-silk fibers obtained by titanium dioxide incorporation and formaldehyde cross-linking in a simple wet-spinning process

被引：12

作者：

Zhu, Hongnian ^{[1
]}

Sun, Yuan ^{[1
]}

Yi, Tuo ^{[1
]}

Wang, Suyang ^{[1
]}

Mi, Junpeng ^{[1
]}

Meng, Qing ^{[1
]}

机构：

[1] Donghua Univ, Inst Biol Sci & Biotechnol, Shanghai 201620, Peoples R China

来源：

BIOCHIMIE | 2020年 / 175卷

基金：

中国国家自然科学基金;

关键词：

Synthetic spider-silk fiber; Tensile property; Titanium dioxide incorporation; Formaldehyde cross-linking; COMPLETE GENE SEQUENCE; MECHANICAL-PROPERTIES; DRAGLINE SILK; PROTEIN; STRENGTH; FIBROIN; DOMAIN; FILMS;

D O I：

10.1016/j.biochi.2020.05.003

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Due to its unique mechanical properties, spider silk shows great promise as a strong super-thin fiber in many fields. Although progress has been made in the field of synthesizing spider-silk fiber from recombinant spidroin (spider silk protein) in the last few decades, methods to obtain synthetic spider-silk fibers as tough as natural silk from small-sized recombinant protein with a simple spinning process have eluded scientists. In this paper, a recombinant spidroin (MW: 93.4 kDa) was used to spin tough synthetic spider-silk fibers with a simple wet-spinning process. Titanium oxide incorporation and formaldehyde cross-linking were used to improve the mechanical properties of synthetic spider-silk fibers. Fibers treated with incorporation or/and cross-linking varied in microstructure, strength and extensibility while all exhibited enhanced strength and toughness. In particular, one fiber possessed a toughness of 249 +/- 22 MJ/m(3). This paper presents a new method to successfully spin tough spider-silk fibers in a simple way. (C) 2020 Elsevier B.V. and Societe Francaise de Biochimie et Biologie Moleculaire (SFBBM). All rights reserved.

引用

页码：77 / 84

页数：8