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Toughening PA1010 with a functionalized saturated polyolefin elastomer
Author(s) -
Chen Hongbing,
Yang Bingxin,
Zhang Haoyu
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(20000725)77:4<928::aid-app29>3.0.co;2-v
Subject(s) - polyolefin , elastomer , materials science , composite material , reactive extrusion , izod impact strength test , maleic anhydride , copolymer , grafting , extrusion , polymer , ultimate tensile strength , layer (electronics)
Polyamide (PA)1010 is blended with a saturated polyolefin elastomer, ethylene‐α‐olefin copolymer (EOCP). To improve the compatibility of PA1010 with EOCP, different grafting rates of EOCP with maleic anhydride (MA) are used. The reaction between PA1010 and EOCP‐ g ‐MA during extrusion is verified through an extraction test. Mechanical properties, such as notched Izod impact strength, elongation at break, etc., are examined as a function of grafting rate and weight fraction of elastomer. It was found that in the scale of grafting rate (0.13–0.92 wt %), 0.51 wt % is an extreme point for several mechanical properties. Elastomer domains of PA1010/EOCP‐ g ‐MA blends show a finer and more uniform dispersion in the matrix than that of PA1010/EOCP blends. For the same grafting rate, the average sizes of elastomer particles are almost independent on the contents of elastomer, but for different grafting rates, the particle sizes are decreased with increasing grafting rate. The copolymer formed during extrusion strengthens the interfacial adhesion and acts as an emulsifier to prevent the aggregation of elastomer in the process of blending. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 928–933, 2000