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Thermal and water dual-responsive shape memory poly(vinyl alcohol)/Al2O3 nanocomposite

机译：热量和水双响应形状记忆聚（乙烯醇）/ Al2O3纳米复合材料

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摘要

We report a new type of poly(vinyl alcohol) (PVA)/Al2O3 nano- composite with fast thermal and water activated shape memory behavior via a cyclic freezing/thawing method. Shape memory polymers (SMPs) have attracted much attention for their capacity for recovering a permanent shape from a programmed temporary shape upon exposure to external stimuli such as heat, light, solvents, electric, and magnetic fields. SMPs exhibit potential applications in smart biomed- ical devices, intelligent textiles, implant devices for minimally invasive surgery, controlled drug release, aerospace fields and stimuli-responsive actuators due to their high deformation strain, good processability and tunable transition temperatures. Despite the promising application prospect of SMPs, their practical applications are severely limited by their weak mechanical properties compared with other shape-memory materials such as ceramics and metals. Therefore, there is an urgent need to improve the mechanical properties of SMPs.
机译：我们通过循环冷冻/解冻方法报告一种新型的聚（乙烯醇）（PVA）/ AL2O3纳米复合材料，通过循环冷冻/解冻方法。形状记忆聚合物（SMPs）吸引了它们在暴露于外部刺激之类的外部刺激时从编程的临时形状中恢复永久形状的能力，这些内存聚合物引起了很多关注。 SMPS在智能生物学 - 智能设备，智能纺织品，植入装置中表现出潜在的应用，用于微创手术，受控药物释放，航空航天领域和刺激响应致动器，由于它们的高变形应变，良好的加工性和可调谐过渡温度。尽管SMPS的申请前景有前景，但与陶瓷和金属等其他形状记忆材料相比，它们的实际应用受到弱机械性能的限制。因此，迫切需要改善SMP的机械性能。

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  • 来源
    《RSC Advances》 |2015年第111期|共5页
  • 作者

    Quanming Bai; Gongzheng Zhang; Bo Xu;

  • 作者单位

    School of Chemical Engineering and Environment Beijing Institute of Technology Beijing 100081 China.;

    School of Chemical Engineering and Environment Beijing Institute of Technology Beijing 100081 China.;

    School of Chemical Engineering and Environment Beijing Institute of Technology Beijing 100081 China.;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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