| Autor: |
Mauler, Raquel S., Tokumoto, Shinichi, Pinto, Maurício R., Gomes, Aílton S. |
| Zdroj: |
Polymer Bulletin; Sep1998, Vol. 41 Issue 3, p291-297, 7p |
| Abstrakt: |
The preparation of functionalized cis-1,4-polyisoprene and its copolymerization with a liquid crystalline monomer are reported in this paper. A sample of natural rubber Hevea Brasiliensis with HO end group was reacted with acryloyl chloride. The copolymerization between telechelic acrylate polyisoprene and [(4'-methylphenyl)benzoyloxy-4-oxytetramethylene] acrylate (LCM) was performed by radicalar reaction using 2,2'- azoisobutyronytrile as the initiator. The LCM incorporation into the copolymer was analysed by 1H NMR and TGA measurements. The product exhibits liquid crystalline properties observed by polarized optical microscopy and DSC. Some particular mechanical properties were also evaluated by oscillatory tests. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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