Molecular mobility in biodegradable poly (ε -caprolactone)/ poly(hydroxyethyl acrylate) networks

R. Sabater I Serra, A. Kyritsis, J. L. Escobar Ivirico, J. L. Gómez Ribelles, P. Pissis, M. Salmerón-Sánchez

研究成果: ジャーナルへの寄稿学術誌査読

8 被引用数 (Scopus)

抄録

Poly(ε-caprolactone)/poly(hydroxyethyl acrylate) networks have been investigated by thermally stimulated depolarization currents (TSDC) and differential scanning calorimetry (DSC). The introduction of hydrophilic units (HEA) in the system aiming at tailoring the hydrophilicity of the system results in a series of copolymer networks with microphase separation into hydrophobic/hydrophilic domains. Polycaprolactone (PCL) crystallization is prevented by the topological constraints HEA units imposed in such heterogeneous domains. Moreover, the mobility of the amorphous PCL chains is enhanced as revealed by the main relaxation process which becomes faster. The glass transition of PHEA-rich domains shifts to lower temperatures, as the total amount of PCL in the copolymer increases, due to the presence of PCL units within the same region. The behaviour of the copolymer networks swollen with different content of water has been investigated to analyze the interaction between water molecules and hydrophobic/hydrophilic domains and provide further insights into the molecular structure of the system.

本文言語英語
論文番号i2011-11037-4
ジャーナルEuropean Physical Journal E
34
4
DOI
出版ステータス出版済み - 4月 1 2011
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • バイオテクノロジー
  • 生物理学
  • 化学 (全般)
  • 材料科学(全般)
  • 表面および界面

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