MELTING OF HYDROGELS CONTAINING AMMONIUM NITRATE

Authors
  1. Ahad, E.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
The fusion of hydrogels containing ammonium nitrate (AN) has been investigated by differential scanning calorimetry (DSC). The polymers used were guar and xanthan gums as well as synthetic polyacrylamide polymers. Water in hydrogels could be classified into three types labeled as ordinary water, intermediate water and bound nonfreezing water. The temperature of fusion of intermediate water was about 10C to 35C lower than that of ordinary water. Intermediate and bound water were found in all the gels studied whereas ordinary water existed mainly in mixtures with total water content higher than 62%. In hydrogels containing AN, the amount of nonfreezing water increased with the polymer concentration as well as with the AN proportion relative to water.
Report Number
DREV-4078/77 —
Date of publication
15 Oct 1977
Number of Pages
26
DSTKIM No
77-04686
CANDIS No
101358
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: