Crystallization phenomena in bacterial poly[(R)-3-hydroxybutyrate]: 3. Toughening via texture changes

G.J.M. Koning, de, A.H.C. Scheeren, P.J. Lemstra, M. Peeters, H. Reynaers

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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    Samenvatting

    Poly[(R)-3-hydroxybutyrate] (I) is a bacterial storage polyester that is genuinely biodegradable, but its brittleness hampers its wide applicability as a biodegradable plastic. Most attempts to improve the mech. properties of I have focused on incorporating comonomers, but at the expense of prodn. costs. Strikingly, it appeared possible to toughen I using a simple annealing treatment. The present study attributes this remarkable phenomenon to a change in the lamellar morphol., which reduces the amorphous-cryst. interface area and thus the constraint imposed on the amorphous chains by the crystals. This elevates the relaxation strength of the amorphous regions, giving rise to the favorable fracture behavior
    Originele taal-2Engels
    Pagina's (van-tot)4598-4605
    TijdschriftPolymer
    Volume35
    Nummer van het tijdschrift21
    DOI's
    StatusGepubliceerd - 1994

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