Premium
The amorphous fraction of cellulose and its relation to moisture sorption
Author(s) -
Jeffries R.
Publication year - 1964
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.1964.070080314
Subject(s) - cellulose , amorphous solid , sorption , fraction (chemistry) , moisture , mass fraction , materials science , lignin , chemical engineering , polymer chemistry , chemistry , organic chemistry , adsorption , engineering
The OH → OD exchange reaction between deuterium oxide vapor and cellulose has been studied for thirteen different types of cellulose; the extent of exchange in a cellulose was determined by measuring the increase in the dry weight of the sample. With each cellulose the deuteration reaction was in two stages, a rapid stage followed by a slow stage; the material that exchanges during the rapid stage is the infrared‐amorphous fraction of the cellulose, and therefore values for the amorphous fractions of the thirteen samples could be obtained. These amorphous fractions were found to be linearly related to the moisture regains of the samples. There is tentative evidence that the cellulose II samples absorb slightly more water into a unit amount of amorphous material than cellulose I samples.