Copolymers from unsaturated macrolactones : toward the design of cross-linked biodegradable polyesters

I. Meulen, van der, Y. Li, R. Deumens, E.A.J. Joosten, C.E. Koning, A. Heise

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

55 Citaten (Scopus)

Samenvatting

The enzymatic synthesis of a series of random copolyesters by ring-opening polymerization of unsaturated macrolactones like globalide and ambrettolide with 1,5-dioxepan-2-one (DXO) and 4-methyl caprolactone (4MeCL) was investigated. 13C NMR diad analysis confirmed the randomness of all copolymers irrespective of the comonomer ratios. Thermal investigation showed that incorporating the comonomers lowered the melting points of the polymers as compared with the macrolactone homopolymers. The decrease was dependent on the comonomer ratio. The unsaturated copolymers were thermally cross-linked using dicumyl peroxide, which resulted in completely amorphous insoluble networks. It was found that 10% incorporation of the unsaturated macolactone was sufficient to obtain a gel content of 95 wt %. Preliminary degradation tests confirm that the cross-linked copolymers are enzymatically degradable and that the incorporation of hydrophilic comonomers like DXO enhances degradation
Originele taal-2Engels
Pagina's (van-tot)837-843
TijdschriftBiomacromolecules
Volume12
Nummer van het tijdschrift3
DOI's
StatusGepubliceerd - 2011

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