Bordbar, H. and Yousefi, A. A. and Saadatabadi, A. R. (2007) Preparation of highly rubber-toughened nylons. IRANIAN POLYMER JOURNAL , 16 Issue: 7 Pages: 459-468 Published: JUL 2007 (7). pp. 459-468. ISSN 1026-1265
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Nylon 6 and 66 were toughened with EPDM-g-MA and SEBS-g-MA and steadystate rheological behaviour of rubbers, nylons and their blends and mechanical properties of nylons and their rubber-toughened blends were investigated. The EPDM maleic grafting preparation was performed in the framework of this study where SEBS-g-MA was obtained from a commercial source. The results showed the ultra-toughened SEBS-g-MA blends, whereas EPDM blends under the same blending conditions did not show a significant improvement in toughness. In case of EPDM toughened blends an average of some micrometers was observed for the dispersed EPDM particles. Impact and tensile properties of the toughened blend with 20% of SEBS-g-MA rubber showed about 1540% improvement in impact and 240% in elongation-at-break of the blend as compared with those of neat nylon, whereas these properties only showed 30% reduction in Young's modulus of the blends. Rheological measurements revealed the closeness of the viscosity of SEBS-g-MA and nylon 66, whereas the viscosities of EPDM rubber and nylons were found very far from each other under the blending conditions. Morphological observations using SEM technique revealed a co-continuous and a probable nano-scale-clispersed SEBS-g-MA in nylon matrix.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||16 Nov 2009 10:28|
|Last Modified:||16 Nov 2009 10:28|
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