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首页> 外文会议>Multifunctional polymer-based materials. >Synthesis and Characterization of Hydroxy-telechelic Four-arm Star-shaped Oligo(tetrahydrofuran), Their Crosslinking, and Thermomechanical Investigation of the Poymer Network
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Synthesis and Characterization of Hydroxy-telechelic Four-arm Star-shaped Oligo(tetrahydrofuran), Their Crosslinking, and Thermomechanical Investigation of the Poymer Network

机译：羟基telechelic四臂星形寡聚四氢呋喃的合成，表征，交联及聚合物网络的热力学研究

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摘要

Here the synthesis of hydroxy-telechelic four-arm star-shaped oligotetrahydrofuran (4PTHF) with controllable molecular weight was explored, which was perfomed as living cationic ring-opening polymerization of THF using pentaerythritol and trifluoromethanesulfonicanhydride as initiation system. The molecular weights of the ~4PTHF were a function of the reaction time. A polymer network was prepared from the hydroxy-telechelic ~4PTHF precursor by crosslinking with diisocyanate and the shape-memory properties were determined. High values for Rt and R_r > 98% were obtained even at high programmed elongations, which suggest the ~4PTHF-network as a promising shape-memory material. These materials might have a great potential, as the upscal-ing of synthesis could be successfully demonstrated.
机译：在此探索了分子量可控的羟基-telechelic四臂星形低聚四氢呋喃（4PTHF）的合成，其被认为是季戊四醇和三氟甲磺酸酐为引发体系的THF活性阳离子开环聚合反应。 〜4PTHF的分子量是反应时间的函数。通过与二异氰酸酯交联，由羟基-telechelic〜4PTHF前体制备聚合物网络，并确定形状记忆性能。即使在高编程伸长率下，也可以获得较高的Rt和R_r> 98％的值，这表明〜4PTHF网络是一种很有希望的形状记忆材料。这些材料可能具有巨大的潜力，因为可以成功地证明合成技术的规模化。

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  • 来源
  • 会议地点 Boston MA(US);Boston MA(US)
  • 作者

    K. K. Yang; J. Zotzmann; A. Lendlein; M. Behl;

  • 作者单位

    Center for Biomaterial Development and Berlin Brandenburg Center for Regenerative Therapies (BCRT), Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Kantstr.55, 14513 Teltow, Germany,National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Wangjiang Road 29, Chengdu 610064, P. R. China;

    Center for Biomaterial Development and Berlin Brandenburg Center for Regenerative Therapies (BCRT), Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Kantstr.55, 14513 Teltow, Germany;

    Center for Biomaterial Development and Berlin Brandenburg Center for Regenerative Therapies (BCRT), Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Kantstr.55, 14513 Teltow, Germany,Tianjin University-Helmholtz-Zentrum Geesthacht, Joint Laboratory for Biomaterials and Regenerative Medicine, Kantstr. 55, Teltow, Germany;

    Center for Biomaterial Development and Berlin Brandenburg Center for Regenerative Therapies (BCRT), Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Kantstr.55, 14513 Teltow, Germany,Tianjin University-Helmholtz-Zentrum Geesthacht, Joint Laboratory for Biomaterials and Regenerative Medicine, Kantstr. 55, Teltow, Germany;

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  • 正文语种 eng
  • 中图分类 材料;材料;
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