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- W2391462012 abstract "Free|radical solution copolymerization of itaconic acid (IA) and acrylonitrile (AN) was carried out in DMSO at 60℃ using azodiisobutyronitrile (AIBN) as initiator.The resulting polymerization solution was spun to form PAN precursors of carbon fibers,which were then characterized by elemental analysis,IR, 13 C|NMR, DSC and so on.The effect of the itaconic acid content in copolymers on the structure and properties of PAN precursors was investigated.The comonmer content in the copolymer was analyzed quantitatively by IR.The adequate feed ratio of AN/IA was found to be 98/2 (W/W). Copolymers having about 2 mol% of comonomer appeared to have higher isotacticity as calculated from methine group signals in the 13 C|NMR spectra.Furthermore,in the case of P (AN|co|IA) copolymers,the cyclization may start at a lower temperature and propagate at a slower rate." @default.
- W2391462012 created "2016-06-24" @default.
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- W2391462012 date "2000-01-01" @default.
- W2391462012 modified "2023-10-06" @default.
- W2391462012 title "EFFECT OF ITACONIC ACID ON THE STRUCTURE AND PROPERTIES OF PAN PRECURSOR" @default.
- W2391462012 hasPublicationYear "2000" @default.
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