Miscibility behavior of di(ethyl‐2 hexyl) phthalate in binary and ternary chlorinated polymer blends

Abstract

The miscibility behavior of ternary blends made by the addition of di(ethyl‐2 hexyl) phthalate (DOP) to a mixture of chlorinated polymers was investigated by differential scanning calorimetry. Two chlorinated polymer mixtures were selected: polyvinyl chloride (PVC) with a chlorinated polyethylene containing 48 wt% Cl (CPE48), and PVC with a chlorinated PVC containing 67 wt% Cl (CPVC67). Each binary DOP/chlorinated polymer pair is miscible whereas PVC/CPE48 and PVC/CPVC67 blends are immiscible. DOP/CPE48/PVC and DOP/PVC/CPVC67 ternary blends containing, respectively, more than 55 and 20% DOP exhibit a single glass transition temperature (Tg). The spinodal between the one‐Tg zone and the two‐Tg zone is symmetrical in the two cases. At high DOP concentrations, a quantitative analysis of the results leads to the conclusion of the presence of a true ternary phase. At low DOP concentrations where two Tgs are observed, the DOP is distributed equally between the two chlorinated polymers forming, in the DOP/CPE48/PVC case for instance, two binary DOP/CPE48 and DOP/PVC phases. The broad immiscibility zone observed in the DOP/CPE48/PVC ternary blend as compared to the DOP/PVC/CPVC67 blend appears to be mainly caused by the high molecular weight of CPE48, as compared with PVC and CPVC67. © 1994 John Wiley & Sons. Inc.

SAXS Measurements of Interfacial Thickness in Amorphous Polymer Blends Containing a Diblock Copolymer

“…In both models, the conditions under which spherical micelles can form were investigated and expressions of the critical micelle concentration, 0cmc8pherical> were derived. Leibler,72 for example, gives (5) with Zha the degree of polymerization of the homopolymer A and Zcb the degree of polymerization of the B block of the copolymer. The predictions of 0cmc were recently extended by Shull et al17 to the cases of cylindrical and lamellar micelles.…”

Effect of plasticization of dye doped polymer on second-order optical nonlinearity induced by electric field

“…The polymer matrix is poly͑methyl methacrylate͒ ͑PMMA͒. The plasticizer is di͑ethyl-2 hexyl͒ phthalate ͑DOP͒ 7,8 . The solution of MNA and PMMA in methyl isobutyl ketone ͑MIBK͒ was made.…”

Effect of the composition of α‐MSAN copolymer on the miscibility of PVC/α‐MSAN blends

“…20 The miscibility behavior of DOP/CPE48/PVC and DOP/PVC/ CPVC67 ternary blends was influenced by the di-isooctyl phthalate (DOP) concentrations. 21 So far, no study has been reported on the use of DOP as plasticizing agent for PVC/a-MSAN blend system. This work attempts to investigate the compatibility between PVC and a-MSAN copolymers via dynamic mechanical analysis (DMA) and scanning electron microscopy (SEM) methods.…”

“…For example, Paul and coworkers have found that the addition of DMP first lowers the cloud point for the PMMA/SAN blend system, but further addition causes the cloud point to increase 20. The miscibility behavior of DOP/CPE48/PVC and DOP/PVC/CPVC67 ternary blends was influenced by the di‐isooctyl phthalate (DOP) concentrations 21. So far, no study has been reported on the use of DOP as plasticizing agent for PVC/α‐MSAN blend system.…”

“…20 The miscibility behavior of DOP/CPE48/PVC and DOP/PVC/ CPVC67 ternary blends was influenced by the di-isooctyl phthalate (DOP) concentrations. 21 So far, no study has been reported on the use of DOP as plasticizing agent for PVC/a-MSAN blend system.…”