Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO₃, OH Systems

Table 3

Weight change of the starting substances and the solid reaction products during the heating of Ca(NO₃)₂–Ca(OH)₂–PVC blend and the heats of reactions (6), (9), (10), and (13).

Reaction	Weight change of starting solid substance and reactions products Δ𝑚, mg						∑Δ𝑚, mg	–Δ𝐻,𝐽
	PVC	●C2H2	Ca(NO3)2	CaCO3	CaCl2	Ca(OH)2
(6)	−20,18	+ 8,39			+ 17,93	−11,95	−5,81	11,6
(9)		−2,64	−16,68	+ 20,34		−7,52	−6,50	113,1
(10)		−5,75					−5,75	290,4
(13)				+ 44,20		−32,71	+ 11,49	30,8
						Total	−6,57