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Induced crystallization of cellulose in never‐dried cotton fibers
Author(s) -
Iyer P. Bhama,
Sreenivasan S.,
Chidambareswaran P. K.,
Patil N. B.,
Sundaram V.
Publication year - 1991
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.1991.070420631
Subject(s) - crystallization , swelling , cellulose , materials science , chemical engineering , fiber , humidity , absorption of water , cellulose fiber , absorption (acoustics) , diffraction , composite material , polymer chemistry , thermodynamics , optics , engineering , physics
Abstract In the present investigation, we have made a systematic study of the induced crystallization in never‐dried cotton fiber, by allowing it to desiccate under different conditions of humidity and temperature. The resulting structural changes have been followed using x‐ray diffraction and infrared absorption techniques. A slow rate of drying coupled with a high temperature was more conducive for maximum crystallization. Analysis of the effect of temperature on the induced crystallization showed possible existence of a thermal transition in cellulose around 30°C. The induced crystallization brought about by slow drying as well as those produced using intercrystalline swelling agents, have been shown to be resulting from a proper channelization of the interfibrillar mobility existing in the never‐dried fibers.