Synthesis and structural characterization of block and random low molecular weight copolymers composed of l-lactic acid and isosorbide succinate moieties

Romeu Casarano, Denise F.S. Petri, Michael Jaffe, Luiz H. Catalani

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    10 Scopus citations

    Abstract

    Isosorbide succinate moieties were incorporated into poly(L-lactide) (PLLA) backbone in order to obtain a new class of biodegradable polymer with enhanced properties. This paper describes the synthesis and characterization of four types of low molecular weight copolymers. Copolymer I was obtained from monomer mixtures of L-lactide, isosorbide, and succinic anhydride; II from oligo(L-lactide) (PLLA), isosorbide, and succinic anhydride; III from oligo(isosorbide succinate) (PIS) and L-lactide; and IV from transesterification reactions between PLLA and PIS. MALDI-TOFMS and 13C-NMR analyses gave evidence that co-oligomerization was successfully attained in all cases. The data suggested that the product I is a random co-oligomer and the products II-IV are block co-oligomers.

    Original languageEnglish (US)
    Pages (from-to)1414-1424
    Number of pages11
    JournalJournal of the Brazilian Chemical Society
    Volume20
    Issue number8
    DOIs
    StatePublished - 2009

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)

    Keywords

    • Copolymers
    • Isosorbide
    • MALDI-TOF
    • PIS
    • PLLA

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