Thermal characterization and morphological study of polyphenylene sulfide–polycarbonate blends

Abstract

The thermal behavior and phase morphology of binary blends of poly(phenylene sulfide) (PPS) with polycarbonate (PC) have been investigated. Differential scanning calorimetry and dynamic mechanical thermal analysis indicate the blends are immiscible, but the glass transition temperature of PC in the blends was found to be decreased due to the degradation of the PC. The PC degradation was investigated by measuring the molecular weight of PC extracted from the blends. Rheological properties of the blends were also studied using a rheodynamic spectrometer. An inversion of the phase morphology was observed from the scanning electron microscopy and dynamic mechanical thermal analysis. The increase of crystallinity of the PPS in the blends was found from a DSC study.

Heat distortion temperature of PPS/PC blend, PPS/PC nanocomposite and PPS/PC/GF hybrid nanocomposite

“…The melting temperature and density of the resin were 285°C and 1.5 g/cm 3 , respectively. The PC was supplied by Bayer Co. Ltd., Germany; its trademark was Makrolon, PC2807.…”

“…The trademark of the nano-CaCO 3 was CC-A, and the mean diameter and density of the particles were 40 nm and 2.5 g/cm 3 , respectively.…”

“…However, its application is limited to a great extent, due to its poor impact toughness and cost [1]. To improve the impact toughness and reduce the cost, blending [2][3][4], fiber reinforcing [5], and particle filling composite [6,7] are usually used in industry. Akhtard and White [2] studied the properties and characteristics of binary and ternary blends of PPS with poly (bisphenol A) sulfone and polyetherimide.…”

“…Akhtard and White [2] studied the properties and characteristics of binary and ternary blends of PPS with poly (bisphenol A) sulfone and polyetherimide. Lim et al [3] researched the thermal properties and morphological study of PPS-polycarbonate (PC) blends. Choi and Lim [4] investigated the effect of an epoxy on compatibility of PPS/PC blend.…”

Phase separation in semicrystalline blends of poly(phenylene sulfide) and poly(ethylene terephthalate). I. Preparation of poly(phenylene sulfide)-graft-poly(ethylene terephthalate) copolymers by ester interchange and characterization utilizing the model compound 2,4-bis(phenylthio benzoic acid)

“…Commodity plastics such as high-density polyethylene 1 and polystyrene 2 have been incorporated to reduce the cost of PPS. Blends of PPS with engineering thermoplastics such as polycarbonate, 3,4 poly(ethylene terephthalate) {PET), 4,5 polyarylate, 6,7 polyamide 8 and polysulfone 9 -13 have been developed to improve the property balance of PPS. High-performance polymers such as polyetherimide (PEI), 14 liquid crystal polymers (LCP) [15][16][17][18][19][20][21] and polyarylketone (PEK) variants 22 have been mixed with PPS to create blends with improved processibility and thermal performance.…”