The compatibilizer content effect on tensile and flexural properties of PC/ABS blends

• Published in: IOP conference series. Materials Science and Engineering Vol. 770; no. 1; pp. 12041 - 12047
• Main Authors: Zhu, Z F, Chen, B, Wen, J, Zhang, Q, Yuan, S, Yin, L
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.02.2020
• Subjects: ABS resins; Butadiene; Compatibility; Compatibilizers; Impact strength; Injection molding; Interfacial bonding; Maleic anhydride; Mechanical properties; Polymer blends; Polymethyl methacrylate; Styrenes; Thermodynamic properties
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/770/1/012041

In this research, the effect of styrene-maleic anhydride (SMA), methyl methacrylate-butadiene-styrene (MBS) and maleic anhydride-grafted ABS (ABS-g-MAH) compatibilizer on thermal and mechanical properties of polycarbonate (PC) and poly(acrylonitrile-butadiene-styrene) (ABS) blends were studied. PC/ABS blends samples with varying contents of compatibilizer were prepared. With the compatibilizer content increases, the results indicated that the effects of these three compatibilizers on PC/ABS blends are not exactly the same. When the SMA content increases from 5 to 20wt%, the impact strength reduced by about 76% from 43.24 kJ/m2 to 10.20 kJ/m2. The SEM picture indicated that when SMA content exceeds 5wt%, SMA resin begins to aggregate and leading to inadequate interfacial bonding between SMA and PC/ABS phases. The results showed that about 5wt% of ABS-g-MAH can improve the impact strength of the blends by about 113% and have little effect on the tensile and flexural properties. Similarly, when the MBS content reaches about 5wt%, the impact strength of PC/ABS blends is increased by about 112%, but as the MBS content increases to 20wt%, the tensile and flexural properties reduced by about 25%.