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Title:
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The Free-Radical Copolymerization of Difurylmethane with Maleic anhydride |
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Author:
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Ddamba, W.A.A.; Ngila, J.C.; Mokoena, T.T.; Motlhagodi, K. |
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Abstract:
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The copolymerization of difurylmethane with maleic anhydride in the presence of
azobisisobutyronitrile as an initiator has been investigated at 65 °C, 72 °C and 85 °C in
different solvents. Reaction feeds containing 85 mol % and higher of difurylmethane
yielded a soluble alternating copolymer in which the furan residue entrained in the
polymer chain formed 2,5 linkages and had 3,4 unsaturation. The 1:1 difurylmethane–
maleic anhydride adduct was readily prepared, and at the above temperatures and in
the presence of the radical initiator partially underwent retro-Diels–Alder reaction.
Copolymerization of the difurylmethane and maleic anhydride thus formed yielded the
unsaturated alternating copolymer. Copolymers prepared from reaction feeds with
proportions of difurylmethane lower than 85 mol % had higher cross-link density and
exhibited higher thermodecomposition temperatures. |
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URI:
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http://hdl.handle.net/10311/305
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Date:
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2002 |
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Publisher:
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South African Journal of Chemistry. <http://ejour.sabinet.co.za/images/ejour/chem/chem_v55_a1.pdf>. |
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xmlui.dri2xhtml.METS-1.0.item-type:
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Published Article |