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Mechanical and morphological properties of PP/LLPDE/NR blends-effect of polyoctenamer

Hassan, Azman and Wahit, Mat Uzir and Ching, Yern Chee (2005) Mechanical and morphological properties of PP/LLPDE/NR blends-effect of polyoctenamer. Polymer-Plastics Technology and Engineering, 44 (7). pp. 1245-1256. ISSN 0360-2559

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Official URL: http://dx.doi.org/10.1080/03602550500207741

Abstract

In this study, impact-modified polypropylene (PP) ternary blends based on PP/natural rubber (NR)/linear low-density polyethylene (LLDFE) with ratios of 72/10/18 and 64/20/16 were produced by a twin-screw extruder with polyoctenamer (TOR) as the compatibilizer. The mechanical properties of the blend were determined on injection-molded specimens in tensile, flexural, and impact testing. The impact strength and elongation at break of the blend increased significantly while the flexural modulus and tensile strength decreased slightly with increasing TOR content. The impact strength improved with the increasing TOR due the increase of interfacial adhesion resulting in finer dispersion of the rubbery minor phase in the PP matrix. The improvement in compatibility with the addition of TOR into PP/NR/LLDPE blends is being supported by both scanning electron microscopy (SEM) and dynamic mechanical analysis (DMA).

Item Type:Article
Uncontrolled Keywords:Compatibility, mechanical properties, natural rubber, polyoctenamer, polypropylene, PP/NR blends
Subjects:T Technology > T Technology (General)
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:5540
Deposited By: Norhani Jusoh
Deposited On:11 May 2008 10:29
Last Modified:26 Nov 2012 03:44

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