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Abstract

The effect of uv light (2537 Å) on the fabric properties of cotton cinnamate was investigated. At the higher degrees of substitution (DS = 0.3 0.6), the cinnamoyl substituents afforded partial protection of the cellulose from photodegrada tion. Cinnamate substituents raised wet and conditioned wrinkle-recovery angles of cotton to the extent of approxi mately 45° and 38° (W + F), respectively, at DS values of 0.48 and 0.58. Irradiation of cotton cinnamates increased both wet and conditioned wrinkle-recovery angles of the fabrics by relatively small amounts up to 36 and 40°, respec tively. These increases are attributed to dimerization between pairs of cinnamate groups with the formation of cross links.

Keywords

Cellulose cot ton fabric trans-cinnamoylchloride. Cotton cinnamate fabric chemically modifird cotton HCl damage discoloration. DMF pyridine uv light. Concentration temperature time. DS crystallinity cross-linking cross links(truxillic)cross links (truxinic)photodimerization photodegradation breaking strength wrinkle-recovery angles. Esterification irradiation analytical test methods physical test methods.

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Photo-Initiated Cross-Linking of Cotton-Cinnamate Fabric

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