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Reversible crosslinking in cellulose. II. Mono‐and bifunctional reactions of bis‐β‐isocyanatoethyl disulfide with cotton
Author(s) -
Sakamoto Munenori,
Takeda Junichi,
Yamada Yoshio,
Tonami Hiroaki
Publication year - 1970
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.1970.070140401
Subject(s) - dimethylformamide , bifunctional , cellulose , sulfur , disulfide bond , polymer chemistry , chemistry , reaction conditions , organic chemistry , catalysis , biochemistry , solvent
Bis‐β‐isocyanatoethyl disulfide (BIED) was synthesized from diethyl dithiodipropionate and its reaction with cotton in dimethylformamide was investigated. The sulfur content of the treated cotton decreased by reduction with tri‐ n ‐butylphosphine. The polarographic and infrared analyses revealed that BIED reacted with cotton both monofunctionally and bifunctionally to form branches and crosslinks, respectively. The ratio of the crosslinks to the total amount of BIED combined increased in general as the reaction progressed. X‐Ray study indicated that the reaction took place mainly in the original amorphous region.