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Sorption behavior of reactive dyed labelled fibroin on fibrous substrates
Author(s) -
Ngo HaThanh,
Bechtold Thomas
Publication year - 2016
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.43880
Subject(s) - fibroin , sorption , chemical engineering , viscose , dissolution , materials science , polyester , polymer chemistry , biocompatibility , polyamide , chemistry , adsorption , organic chemistry , composite material , silk , engineering
Through its biocompatibility, fibroin is of high interest as a material in medical and pharmaceutical applications. Shaping by dissolution in concentrated salt solutions e.g., calcium chloride/ethanol/water and regeneration include structure formation through coagulation, crystallization, and deposition of Ca‐complexes. To facilitate analytical monitoring of fibroin during the dissolution and regeneration, fibroin was marked by covalently bound reactive dyes. Fibroin dyed by the mono‐functional CI Reactive Blue 19 dissolved completely, the bifunctional CI Reactive Black 5 formed crosslinks between protein chains, thus only fiber swelling was observed. The CI Reactive Blue 19 labelled fibroin was used to monitor the sorption and deposition of fibroin on textile fibers polyamide 6.6, polyester and viscose. The results indicated a temperature and pH‐dependent sorption behavior. The highest sorption was observed on polyamide at pH 3 and 60 °C. Dye marked fibroin allows a simple assessment and optimization of regeneration processes for the coating of textile substrates. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 43880.