...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS Omega >Shape Memory Polyurethane-Based Smart Polymer Substrates for Physiologically Responsive, Dynamic Pressure (Re)Distribution
【24h】

Shape Memory Polyurethane-Based Smart Polymer Substrates for Physiologically Responsive, Dynamic Pressure (Re)Distribution

机译：形状内存聚氨酯基智能聚合物基材，用于生理响应，动态压力（RE）分布

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Shape memory polymers (SMPs) are an exciting class of stimuli-responsive smart materials that demonstrate reactive and reversible changes in mechanical property, usually by switching between different states due to external stimuli. We report on the development of a polyurethane-based SMP foam for effective pressure redistribution that demonstrates controllable changes in dynamic pressure redistribution capability at a low transition temperature (～24 °C)—ideally suited to matching modulations in body contact pressure for dynamic pressure relief (e.g., for alleviation or pressure ulcer effects). The resultant SMP material has been extensively characterized by a series of tests including stress–strain testing, compression testing, dynamic mechanical analysis, optical microscopy, UV–visible absorbance spectroscopy, variable-temperature areal pressure distribution, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, differential scanning calorimetry, dynamic thermogravimetric analysis, and 1H nuclear magnetic resonance spectroscopy. The foam system exhibits high responsivity when tested for plantar pressure modulation with significant potential in pressure ulcers treatment. Efficient pressure redistribution (～80% reduction in interface pressure), high stress response (～30% applied stress is stored in fixity and released on recovery), and excellent deformation recovery (～100%) are demonstrated in addition to significant cycling ability without performance loss. By providing highly effective pressure redistribution and modulation when in contact with the body’s surface, this SMP foam offers novel mechanisms for alleviating the risk of pressure ulcers.
机译：形状记忆聚合物（SMPs）是一种令人兴奋的刺激敏感智能材料，其展示了机械性能的反应性和可逆变化，通常通过外部刺激而在不同状态之间切换。我们报告了用于有效压力再分布的基于聚氨酯的SMP泡沫的开发，其在低过渡温度（〜24°C）的动态压力再分配能力中显示可控变化的变化 - 适用于匹配体接触压力的调节，用于动态压力释放（例如，用于缓解或压力溃疡效应）。得到的SMP材料已被广泛的特征在于一系列测试，包括应力 - 应变检测，压缩检测，动态机械分析，光学显微镜，UV可见光光谱，可变温度的压力分布，傅里叶变换红外光谱，拉曼光谱， X射线衍射，差示扫描量热法，动态热重分析和1H核磁共振光谱。泡沫系统在测试Plantar压力调节时表现出高响应度，其压力溃疡治疗具有显着潜力。高效的压力再分配（接口压力降低约80％），高应力响应（〜30％施加应力储存在固定性上并释放回收），并且除了没有的显着的循环能力，还证明了优异的变形回收（〜100％）性能损失。通过在与身体表面接触时提供高效的压力再分配和调制，该SMP泡沫提供了用于减轻压力溃疡的风险的新机制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号