Fuoco, Tiziana; Nguyen, Tran Tam; Kivijaervi, Tove; Finne-Wistrand, Anna published the artcile< Organocatalytic strategy to telechelic oligo(ε-caprolactone-co-p-dioxanone): Photocurable macromonomers for polyester networks>, Reference of 112-63-0, the main research area is organocatalytic telechelic oligocaprolactone dioxanone photocurable macromonomer polyester.
We have designed photocurable, telechelic macromonomers consisting of random oligo(ε-caprolactone-co-p-dioxanone), oligo(CL-co-DX), and demonstrated their suitability for preparing pliable polyester networks whose properties resemble those of gels. A versatile and effective metal-free co-oligomerization, catalyzed by di-Ph phosphate, was developed in bulk and at room temperature A high rate of conversion of monomers was achieved and oligo(CL-co-DX)s with different composition and topol. were obtained with controlled molar mass, approx. 2000 g mol-1, low dispersity and a random distribution of the two monomeric units. Kinetics anal. of the reaction disclosed a faster incorporation rate for the p-dioxanone (DX) than ε-caprolactone (CL). The extrapolated rate constant, kDX, was 0.030 min-1 against a kCL of 0.013 min-1. The reactivity ratios were resp. 2.7 (rDX) and 0.28 (rCL). A detailed NMR anal. was performed to elucidate the structure of the co-oligomers, which could be precisely controlled by varying the monomer feed ratio and initiator. Depending on the composition, amorphous to semicrystalline oligomers with m.ps. close to room temperature were obtained, which after acrylation of the chain-end gave polyester networks with high swelling capacity up to 700%, and water uptake up to 70%.
European Polymer Journal published new progress about Biodegradable materials. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.
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