Preparation and properties of PC/SAN alloy modified with styrene‐ethylene‐butylene‐styrene block copolymer

Abstract

A polycarbonate (PC)/ poly (styrene-co-acrylonitrile) (SAN) alloy modified with styrene-ethylenebutylene-styrene (SEBS) block copolymer was prepared and the influence of SEBS content, PC content, and types of modifier on Izod notched impact strength, tensile strength, flexural strength, and Vicat softening temperature was studied. The results showed that the addition of SEBS could obviously increase the Izod notched impact strength and the elongation at break and decrease the tensile and flexural strength and Vicat softening temperature. PC/SAN alloy modified with SEBS had better mechanical properties than the PC/SAN alloy modified with ABS. DSC analysis and SEM photographs revealed that the SEBS was not only distributed in the SAN phase but also distributed in PC phase in a PC/SAN/SEBS alloy while the ABS was mainly distributed in SAN phase in a PC/ SAN/ABS alloy.

Study of the influence of adding styrene-ethylene/butadiene-styrene in acrylonitrile-butadiene-styrene and polyethylene blends

“…The introduction of SEBS and other elastic thermoplastics has been reported previously by other authors such as Ganguly et al , Tasdemir , and Yin et al with similar results.…”

“…Other works worth mentioning are: Li et al , who studied poly(2,6‐dimethyl‐1,4‐phenylene oxide)/polyamide with SEBS grafted with maleic anhydride blends and Yin et al , who studied PC/styrene‐acrylonitrile with SEBS blends. These works are not comparable with the present one, but they gave the guidelines to improve the mechanical properties using SEBS.…”

Synthesis and gas transport properties of rigid block copolyaramides

“…Copolymerization has become an important tool for the development of new materials with specific characteristics [1,2]. The main reason is that copolymer synthesis offers the ability to tailor the properties of a polymeric material in a desired direction by the introduction of an appropriately chosen second or in some cases a third monomeric unit sequence, allowing us to alter such polymer properties as flexibility, crystallinity, thermal stability, glass transition temperature and gas transport [1][2][3][4][5][6][7][8][9].…”

Recovery of recycled acrylonitrile–butadiene–styrene, through mixing with styrene–ethylene/butylene–styrene

“…SBS and SIS are materials that are very common in SEBS, but there appear to be no studies into incorporation of SEBS in recycled polymers in order to recover their properties. Other examples are those of Li et al (2010), who studied mixtures of PPO/PA with SEBS-g-MA and ABS-g-MA and Yin et al (2007), who studied mixtures of PC/SAN with SEBS. These studies are not comparable to our own as other materials were used, however, they show that there is an improvement in properties with the addition of SEBS to the materials used.…”