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Ultrastrong composite film of Chitosan and silica-coated graphene oxide sheets.

Abstract：

:Chitosan (CS) has attracted significant interest in various fields due to its outstanding functional properties (especially, its chain with positive charge). However, wide-range applications of CS are severely limited because of its poor mechanical properties. Ultrastrong composite film of CS and silica-coated graphene oxide sheets (GO@SiO2) were prepared by a simple solution casting method in this article. GO@SiO2 was prepared by the hydrolysis of tetraethyl orthosilicate (TEOS) in GO ethanol solution. Compared with the pure CS film, the tensile strength of the CS/GO@SiO2 composite film with incorporation of 1.75wt% GO@SiO2 fillers was significantly increased 158% from 55±4 to 142±24MPa. Such high tensile strength may be caused synergistically by strong interaction between two components and high crystallinity of the CS matrix. CS based composite with ultrastrong strength may have more potential applications in biomedical fields.

journal_name

Int J Biol Macromol

journal_title

International journal of biological macromolecules

authors

Yan H,Jiang L,Xu X,Li Y,Shen Y,Zhu S

doi

10.1016/j.ijbiomac.2017.07.003

subject

Has Abstract

pub_date

2017-11-01 00:00:00

pages

936-943

issue

Pt A

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(17)30732-8

journal_volume

104

pub_type

杂志文章

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