Citation: BIAN Xinsheng, HAN Xiaozu, WANG Xinren, ZHANG Qingyu. PROPERTIES AND MORPHOLOGY OF LIQUID CHLOROPRENE-METHACRYLIC ACID COPOLYMER MODIFIED EPOXY RESIN/POLY (BUTYL METHACRYLATE) SEMI-IPN[J]. Chinese Journal of Polymer Science, ;1987, 5(3): 191-196. shu

PROPERTIES AND MORPHOLOGY OF LIQUID CHLOROPRENE-METHACRYLIC ACID COPOLYMER MODIFIED EPOXY RESIN/POLY (BUTYL METHACRYLATE) SEMI-IPN

Received Date: 11 July 1986

A series of liquid chloroprene-methacrylic acid copolymcr (CP--co-MAA) modified epoxy resin (ER)/poly (butyl methacrylate) (PBMA). semi-IPN were synthesized. Some physical properties were investigated. DSC diagrams showed two indistinct and inward endothermal transitions corresponding to the transitions of two networks in the semi-IPN system. By observing morphology with SEM technique it shows that there is a multiphase structure, in which CP-co-MAA's. domain sizes arc about 0.10--0.80μ. With increasing C/E ratio,the domain sizes are getting smaller,which is due to effect of mixing network of CP-co-MAA promoting entanglement and interpenetrating of PBMA and CP-co-MAA- ER network.In most of the semi-IPN's compositions,ER phase readily maintains its phase continuity while PBMA phase presents a band shape structure.Consequently,crosslinking network keeps in its continuous phase more readily than uncrosslinking one,thus it influences dominantly on the physical properties.
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