Effect of hydrophilicity on the properties of a degradable polylactide

Yvonne Boxberg, Matthias Schnabelrauch, Sebastian Vogt, Manuel Salmerón Sánchez, Gloria Gallego Ferrer, Manuel Monleón Pradas, Julio Suay Antón

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

A series of polylactide networks has been prepared by the copolymerization of a biodegradable oligolactide macromer with hydrophobic methyl methacrylate monomer and hydrophilic hydroxyethyl acrylate monomer, with different amounts of the hydrophilic monomer. The incorporation of the hydrophilic units into the network has been characterized with thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical spectrometry. A homogeneous material results, showing a single glass-transition temperature and a characteristic relaxation behavior that is not the sum of those of the pure components separately. Additional hydrophilic units in the network chains lower the rubbery modulus, keeping a high modulus value at room temperature, and manifestly increase the degradation rate of the polymer. This can be attributed both to the higher water swellability of the network when hydrophilic units are present and to the higher water diffusion coefficient in a network, which has a lower crosslinking density.

本文言語英語
ページ(範囲)656-664
ページ数9
ジャーナルJournal of Polymer Science, Part B: Polymer Physics
44
4
DOI
出版ステータス出版済み - 2 15 2006
外部発表はい

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 物理化学および理論化学
  • ポリマーおよびプラスチック
  • 材料化学

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