caa a22 4500 463222644 CHVBK 20180405153217.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10853-007-1668-9 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1668-9 Impact modification of SAN using NR-g-SAN copolymers [Elektronische Daten] [Benny George, S. Maiti, I. Varma] The paper demonstrates the efficacy of natural rubber-g-poly (styrene-co-acrylonitrile) (NR-g-SAN) copolymers as impact modifier for SAN. The impact behaviour of SAN /NR-g-SAN blends were studied as a function of cross-link density of NR, percent grafting, rubber content in the blend and the AN content in the grafted chain. The cross-link density of NR had no significant effect on impact strength of the blends whereas increase in percent grafting (PG) of the rubber significantly improved the impact strength. Thus the impact strength increased four times when the PG of the rubber was increased from 34.2 to 65%. Further increase in PG decreased the impact strength. Similar trend was observed on increase in the rubber content, the maximum impact strength was observed at 20% rubber. The impact strength also depended on the acrylonitrile content of the grafted chain. Tensile and flexural strength and modulus of these blends were not influenced by PG and AN content in the grafted chain whereas these properties decreased with the increase in the rubber content. Scanning electron microscopic studies of the impact fractured surfaces showed cavitation of rubber particles and craze induced matrix deformation. Dynamic mechanical studies confirmed the two-phase structure of these blends. Springer Science+Business Media, LLC, 2007 George Benny Rubber Research Institute of India, 686 009, Kottayam, Kerala, India aut Maiti S. Centre for Polymer Science and Engineering, Indian Institute of Technology, Delhi, Hauz Khas, 110 016, New Delhi, India aut Varma I. Centre for Polymer Science and Engineering, Indian Institute of Technology, Delhi, Hauz Khas, 110 016, New Delhi, India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/19(2007-10-01), 8262-8270 0022-2461 42:19<8262 2007 42 10853 https://doi.org/10.1007/s10853-007-1668-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1668-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- George Benny Rubber Research Institute of India, 686 009, Kottayam, Kerala, India aut NATIONALLICENCE 700 1- Maiti S. Centre for Polymer Science and Engineering, Indian Institute of Technology, Delhi, Hauz Khas, 110 016, New Delhi, India aut NATIONALLICENCE 700 1- Varma I. Centre for Polymer Science and Engineering, Indian Institute of Technology, Delhi, Hauz Khas, 110 016, New Delhi, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/19(2007-10-01), 8262-8270 0022-2461 42:19<8262 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer