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Citation: Liu Jingjiang, Liu Wenzhong, Zhou Huarong, Hou Chunrong. MORPHOLOGICAL FEATURE OF AB CROSSLINKED POLYMERS[J]. Chinese Journal of Applied Chemistry, ;1989, 6(1): 17-21. shu

MORPHOLOGICAL FEATURE OF AB CROSSLINKED POLYMERS

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 7 March 1988
Available Online: 8 July 1988

AB crosslinked polymers (ABCP) were synthesized from low molecular weight vinyl-terminated polyurethane prepolymers and vinyl monomers such as styrene,methyl methacrylate, vinyl acetate, etc. ABCPs displayed a two-phased morphology with plastic components forming the continuous phase and PU-rich domains forming separation phase on the electron micrographs. The irregular shapes and a highly polydisperse distribution of PU-rich domain size were observed. These morphological features of ABCPs were quite different from linear AB and ABA block copolymers owing to the crosslinking between compoments A and B in ABCPs.The crosslinking density of ABCPs ahd molecular weight of prepolymers showed a notable effect on the compatibility of two components and the mopho1ogy of ABCPs as well.
- AB crosslinked polymers,
- Thermosetting polymer,
- Morphology,
- Polyurethane
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