Journal
POLYMER TESTING
Volume 51, Issue -, Pages 1-5Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2016.02.003
Keywords
Poly(vinyl chloride); Toughening; Thermal stability; Stiffness
Funding
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Scientific Achievement Transformation Foundation of Jiangsu Province [BA2010017]
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The key drawback of impact modifier-toughened polymer is that the improved toughness is accompanied by loss in stiffness. Surprisingly, poly (vinyl chloride) (PVC)/poly (alpha-methylstyrene-acrylonitrile) (alpha-MSAN) blend was toughened without loss in stiffness by simply combining two impact modifiers chlorinated polyethylene (CPE) and acrylic resin (ACR). The prepared blend's impact strength was 3.0 times higher than PVC/alpha-MSAN/CPE blend and 18.6 times higher than pure PVC/alpha-MSAN blend. An impressive thermal stabilizing effect was also achieved when CPE and ACR were combined. The improved, toughness could be attributed to the overlap of the stress field between different impact modifiers, which help to form the continuum percolation of stress volume under impact loading. (C) 2016 Elsevier Ltd. All rights reserved.
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