Glass transition temperatures of microphase-separated semi-interpenetrating polymer networks of polystyrene-inter-poly(cross-2-ethylhexyl methacrylate)

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Graaf, Leontine A. de and Möller, Martin (1995) Glass transition temperatures of microphase-separated semi-interpenetrating polymer networks of polystyrene-inter-poly(cross-2-ethylhexyl methacrylate). Polymer, 36 (18). pp. 3451-3457. ISSN 0032-3861

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Abstract:The glass transition temperature of semi-interpenetrating polymer networks (semi-IPNs) of atactic polystyrene (PS) in crosslinked methacrylates was studied by systematic variation of the morphology, that is domain size, continuity and concentration in the domains. Semi-IPNs were prepared from homogeneous polymer solutions in a two-step process, of liquid-liquid demixing upon cooling followed by gelation, and subsequent ultra-violet polymerization. Semi-IPNs with very little developed phase separation could be obtained, which exhibited optical transparency and a mechanical behaviour similar to that expected for corresponding homogeneous systems. A low PS concentration inside the domains indicated that these domains consisted of only an interphase layer. Samples that were phase separated to a larger extent showed normal two-phase behaviour.
Item Type:Article
Copyright:© 1995 Elsevier Science
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Link to this item:http://purl.utwente.nl/publications/11388
Official URL:http://dx.doi.org/10.1016/0032-3861(95)92015-7
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Metis ID: 106138