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Improvements of the physical properties of fibroin membranes with sodium alginate
Author(s) -
Liang Chuan Xin,
Hirabayashi Kiyoshi
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070451108
Subject(s) - thermogravimetric analysis , membrane , intermolecular force , hydrogen bond , materials science , ultimate tensile strength , elongation , fibroin , polymer , crystal (programming language) , chemical engineering , polymer chemistry , absorption of water , infrared spectroscopy , chemistry , molecule , composite material , organic chemistry , silk , biochemistry , computer science , programming language , engineering
The effects of sodium alginate on the physical properties of fibroin membranes, such as rupture elongation, rupture strength, water absorption, and thermal properties, were investigated. The experimental results showed the β‐form crystal and β‐form molecular conformation increased due to the increase of intermolecular hydrogen bonds, such as CO‐‐‐HN and CO‐‐‐HO. The kind of intermolecular interaction and β‐form molecular conformation of polymer blends were clarified by 13 C–NMR and infrared spectroscopy. The increase in β‐form crystal was examined by X‐ray analysis. Further, membranes were characterized by thermogravimetric analysis (TGA) and by determining their water contents and tensile properties.