Abstract
Impact-resistance polypropylene copolymer (IPC) has been known as multiphase material in which ethylene–propylene rubber (EPR) is dispersed in homo-PP matrix (hPP). Although, the IPC has been commercially produced for several decades, the knowledge of its microstructural change under tensile stretch has not been well established. The present work, for the first time, shows the crystallite evolution of the IPC with preferentially oriented crystal lamellae in both perpendicular and parallel to stretching direction (SD). The IPC with lamella oriented perpendicular to SD exhibits higher strength and strain at break than the others. Small angle X-ray scattering (SAXS) and wide angle X-ray diffraction (WAXD) techniques reveal that the elongation of the lamellar fibril is the main mechanism for the lamella oriented perpendicular to SD while the fibril fracture is for the lamella oriented parallel to SD.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
