| Summary: | 碩士 === 國立成功大學 === 化學工程研究所 === 82 === Epoxy resins are one of the most important thermosetting
polymers and have wide use as structural adhesives and matrix
resins for fiber composites, but their cured resins have one
drawback; they are brittle and have poor resistance to crack
propagation. Then it limits their usage. The toughness of epoxy
resins has been increased by blending with rubber polymer, and
it is an interesting direction of research till now. In this
work, we applied the reactions of emulsion polymerization by
multi-staged, semi-batch method to synthesize the composite
polymer particles with the poly(n-butyl acrylate) [poly(n-BA)]
being the major part of rubber. We used two formulations to
synthesis the seeds of latex particles with different
microphase compositions, and introduce different ratio of poly(
methyl methacrylate)/poly(glycidyl methacrylate) [PMMA/ PGMA]
to cover on the seed latex particles. It forms the structure of
core-shell type composite polymer particles. Owing to the epoxy
group attached to GMA, the shell side of the synthesized
composite particles can produce nice chemical bonding between
the epoxy matrix.(the following is omitted)
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