Solid-State Polymerization of N-Vinylcarbazole by Redox Catalyst
作者:
T. Matsuda,
T. Higashimura,
S. Okamura,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1968)
卷期:
Volume 2,
issue 1
页码: 43-52
ISSN:0022-233X
年代: 1968
DOI:10.1080/00222336808053346
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A crystal of N-vinylcarbazole was polymerized by redox catalyst (ammonium persulfite/sodium bisulfate) in a suspended state in water and poly (vinyl carbazole) was obtained. The polymerization proceeded rapidly above 40°C without an induction period in the solid state. The molecular weight of the polymer increased with decreasing catalyst concentration and raising temperature. ηsp/cof polymer was in the range 0.04–0.07 and it was lower than that obtained in radiation-induced solid-state polymerization. Observation of the partially polymerized crystal through a polarizing microscope showed that the polymerization proceeded from the surface of the monomer crystal and that birefringence was observed in the polymer layer. In X-ray diffraction studies it was found that the polymer was crystalline.
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