Sm. Shin et al., DEHYDROCHLORINATION BEHAVIOR OF RIGID PVC PELLET IN NAOH SOLUTIONS ATELEVATED-TEMPERATURE, Polymer degradation and stability, 61(2), 1998, pp. 349-353
Rigid PVC pellet was treated at 150-250 degrees C in 0 similar to 7 M
NaOH solutions for 0 similar to 12 h. The degree of dehydrochlorinatio
n increased with increasing reaction temperature and reached about 100
% at 250 degrees C over 3 h. A porous char, 2 mu m pore size, was prod
uced. The dehydrochlorination proceeded by a first order reaction in t
he alkaline solution. Maximum rate of the dehydrochlorination for rigi
d PVC was at 3 M NaOH. The apparent activation energy was 96 kJ mol(-1
) in 3 M NaOH for rigid PVC. (C) 1998 Elsevier Science Limited. All ri
ghts reserved.