Bj. Traskmorrell et Bak. Andrews, EFFECT OF CATALYSTS ON THE THERMAL-CHARACTERISTICS OF COTTON CITRIC-ACID DP FINISHES, Textile research journal, 67(11), 1997, pp. 846-853
Citric acid-based durable press finishes catalyzed with various levels
of sodium hypophosphite, sodium phosphate, or sodium phosphite have b
een studied systematically. Thermal characteristics are compared, begi
nning with visual examination of the thermograms and quantitation of m
ultiple parameters primarily from thermogravimetric analyses, and comb
inations of parameters are examined in three-dimensional graphs. Such
combinations are successfully used to distinguish between finishes and
assess finish levels. Comparisons of samples from this series with th
ose of previous studies show that each sample is unique. Finish identi
fication depends critically on the catalyst used, and therefore these
citric acid finishes can be recognized as different from finishes base
d on 1, 3-dimethylol 4, 5-dihydroxyethyleneurea (DMDHEU) and magnesium
chloride/citric acid catalyst. Successful identification of specimens
using only thermoanalytical techniques is an indication that quality
control in textile mills is feasible with these procedures.