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Preparation of O ‐carboxymethyl chitosans and their effect on color yield of acid dyes on silk
Author(s) -
Wu Yi Guang,
Chan Wing Lai,
Szeto Yau Shan
Publication year - 2003
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.12894
Subject(s) - silk , yield (engineering) , chitin , nuclear chemistry , chitosan , polymer chemistry , chemistry , proton nmr , materials science , organic chemistry , composite material
O ‐Carboxymethyl chitosans with a low degree of substitution (DS) and a high degree of deacetylation (DD) were prepared directly from chitin and characterized by using 1 H‐NMR, 13 C‐NMR, and elemental analysis methods. In our study, O ‐carboxymethyl chitosans could increase the color yield of Acid Red 44 and Acid Green 25 on silk fabrics without lowering the corresponding washing fastness property. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 2500–2502, 2003