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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6151

Title: Mechanical properties of simultaneous interpenetrating polymer networks of Castor oil based polyurethane and polystyrene
Authors: BAI, S
KHAKHAR, DV
NADKARNI, VM
Keywords: elastomers
behavior
Issue Date: 1997
Publisher: ELSEVIER SCI LTD
Citation: POLYMER, 38(17), 4319-4323
Abstract: Castor oil and 4,4'-diphenyl methane diisocyanate based polyurethane (PU)-polystyrene (PS) simultaneous interpenetrating polymer networks (IPNs) were synthesized with various PU/PS ratios (100/0, 90/10, 80/20, 75/25, 60/40 and 50/50). Mechanical properties (tensile strength, % elongation, elastic modulus, wear resistance, tear resistance and Shore-A hardness) of the IPNs showed a significant improvement beyond a critical styrene level (25% by weight). However, % elongation at break showed a maximum at 40% styrene. PU/PS IPNs of a fixed styrene level with varying amounts of styrene crosslinking agent, divinyl benzene (DVB), were also synthesized. These materials showed a significant improvement in the mechanical properties with increasing concentration of DVB. The observed behaviour is explained on the basis of results from swelling and Soxhlet extraction studies. (C) 1997 .
URI: http://dx.doi.org/10.1016/S0032-3861(96)01053-1
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6151
http://hdl.handle.net/10054/6151
ISSN: 0032-3861
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