Impact-induced fracture mechanisms of immiscible PC/ABS (50/50) blends

M. N. Machmud, M. Omiya, H. Inoue, K. Kishimoto

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


This paper presents a study on fracture mechanisms of polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) (50/50) blends with different ABS types under a drop weight impact test (DWIT) using a circular sheet specimen. Formation of secondary crack indicated by a stress-whitening layer on the mid-plane of scattered specimens and secondary surface of fracture perpendicular to primary fracture surface were captured under scanning electron microscope (SEM). Although the both blends finally failed in brittle modes, SEM observation showed that their secondary fracture mechanisms were completely different. Observation through the thickness of the etched PC/ABS specimen samples using SEM also clearly showed that PC and ABS were immiscible. The immiscibility between PC and ABS was indicated by presence of their layer structures through the thickness of the blends. It was revealed that layer of ABS structure was influenced by size of rubber particle and this latter parameter then affected microstructure and fracture mechanisms of the blends. Impact-induced fracture mechanisms of the blends due to such microstructures are discussed in this paper. It was also pointed out that the secondary cracking was likely caused by interface delamination between PC and ABS layers in the core due to transverse shear stress generated during the impact test.

Original languageEnglish
Article number012078
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 2018 Apr 6
Event3rd International Conference on Chemical Engineering Sciences and Applications 2017, ICChESA 2017 - Banda Aceh, Indonesia
Duration: 2017 Sept 202017 Sept 21

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)


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