Heat capacity and thermodynamic properties of poly(vinyl chloride)

Abstract

He at capac ities, Cp , of three diffe re nt sampl es of po ly(vin yl c hl o ride) , PVC, have been d ete rmined fro m 6 to 375 K b y adiaba tic ca lorimetry.These three sa mples we re de ri ved from e ith er bul k· or s uspe ns ion-po lyme ri za ti on processes and \ ... 'e re measured e ith e r as rece ived or aft e r pe ll eting unde r p ressure. The heat ca pac iti es of Ih (-' sampl es are alm ost ide nti ca l if the the rmal a nd pressure hi stori es a re th e sa me. Belo w the g lass tra ns iti on te mpe ra ture, 1'., of about 355 K, C p of PVC was found to be exce pt io na ll y line a r ove r a wide te mpe ra ture ra nge. C p