Simultaneous interpenetrating networks consisting of polyurethane and graft vinly ester resin:  Effect of different comonomers

Abstract

Two types of well-defined graft vinyl ester resins (graft VER) containing butanol or poly (oxypropylene) side chains with a molecular weight of ca. 200 (abbreviated as BO-g-VER and 200-g- VER respectively) were synthesized and characterized. The simultaneous interpenetrating networks (SINs) of graft VER and polyurethane (PU) were prepared. The effect of comonomers of graft VER on the morphology and mechanical property of PU/graft VER SINs was studied using DSC, SEM, TEM and FTIR spectroscopy, The relationship between the morphology and mechanical properties of these SINs was also studied. Because the MMA segments existed in graft VER network were miscible with hard segments of PU network, the compatibility and/or interpenretration of PU/ graft VER SINs prepared from MMA as comonomer were bwtter than those prepared from styrene. Thus , the reinforcement effect of the graft VER network on the PU network was quite different using differnt comonomers of graft VER. These experimental results could be related well with the morphology of these SINs.

Key words: POLYURETHANE, RESIN, RESIN, NETWORK POLYMER, FREE REDICAL POLYMERIZATION, MOPHOLOGY STRUCTURE, MECHANICAL PROPETIES, DIFFERENTIAL SCANNING CALORIMETRY, TRANSMISSION ELECTRON MICROSCOPY, METHYLPROPENOIC ACID ESTER

CLC Number:

O631.3

Cite this article

Wang Guiyou;Hu Chunpu. Simultaneous interpenetrating networks consisting of polyurethane and graft vinly ester resin: Effect of different comonomers[J]. Acta Chimica Sinica, 2001, 59(11): 2012-2017.

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