Effect of Na2CO3 degumming concentration on LiBr-formic acid-silk fibroin solution properties | Zendy

Zhi Liu | Zendy; Yuqin Wan | Zendy; Hao Dou | Zendy; JiHuan He | Zendy

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Effect of Na2CO3 degumming concentration on LiBr-formic acid-silk fibroin solution properties

Author(s) -

Zhi Liu,

Yuqin Wan,

Hao Dou,

JiHuan He

Publication year - 2016

Publication title -

thermal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.339

H-Index - 43

eISSN - 2334-7163

pISSN - 0354-9836

DOI - 10.2298/tsci1603985l

Subject(s) - fibroin , formic acid , silk , dissolution , chemical engineering , materials science , sodium carbonate , salt (chemistry) , polymer chemistry , chemistry , sodium , chromatography , composite material , organic chemistry , metallurgy , engineering

Salt-acid system has been proved to be of high efficiency for silk fibroin dissolution. Using salt-acid system to dissolve silk, native silk fibrils can be preserved in the regenerated solution. Increasing experiments indicate that acquirement of silk fibrils in solution is strongly associated with the degumming process. In this study, the effect of sodium carbonate degumming concentration on solution properties based on lithium bromide-formic acid dissolution system was systematically investigated. Results showed that the morphology transformation of silk fibroin in solution from nanospheres to nanofibrils is determined by sodium carbonate concentration during the degumming process. Solutions containing different silk fibroin structure exhibited different rheological behaviors and different electrospinnability, leading to different electrospun nanofibre properties. The results have guiding significance for preparation and application of silk fibroin solutions

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