Poly(caprolactone) containing highly branched segmented poly(ester urethane)s via A2 with oligomeric B3 polymerization

Serkan Unal, Gozde Ozturk, Kristin Sisson, Timothy Edward Long

研究成果: Article査読

29 被引用数 (Scopus)

抄録

Highly branched, poly(caprolactone) (PCL) containing segmented poly(ester urethane)s were synthesized via polymerization of A2 and oligomeric B3 type monomers. An isocyanate functional butanediol-based A 2 hard segment was synthesized and immediately reacted with a poly(caprolactone)-based trifunctional (B3) soft segment. Characterization of thermal properties using DMA and DSC analysis demonstrated that the PCL segment remained amorphous in branched poly(ester urethane)s. Conversely, the crystallinity of PCL segment was retained to some extent in a linear analogue with equivalent soft segment molecular weight. Tensile testing revealed a slight decrease in Young's modulus and tensile strength for the highly branched polymers compared with a linear analogue. However, highly branched poly(ester urethane)s demonstrated lower hysteresis. In addition to synthesis of highly branched polymers, poly(ester urethane) networks were synthesized from a highly branched hydroxyl-terminated precursor and a low molar mass diisocyanate as the crosslinking agent.

本文言語English
ページ(範囲)6285-6295
ページ数11
ジャーナルJournal of Polymer Science, Part A: Polymer Chemistry
46
18
DOI
出版ステータスPublished - 2008 9月 15
外部発表はい

ASJC Scopus subject areas

  • ポリマーおよびプラスチック
  • 材料化学

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