Revealing the glass transition in shape memory polymers using Brillouin spectroscopy
Revealing the glass transition in shape memory polymers using Brillouin spectroscopy
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DOI：
10.1063/1.4999803
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发表时间：
2017-12-11
影响因子：
4
通讯作者：
Yakovlev, Vladislav V.
中科院分区：
文献类型：
--
作者：
Steelman, Zachary A.;Weems, Andrew C.;Yakovlev, Vladislav V.
使用形状记忆聚合物(SMPS)的新兴医疗设备需要精确测量玻璃化转变温度(T-g)，以确保高度可控的形状恢复动力学。差示扫描量热仪(DSC)和动态机械分析(DMA)等传统技术具有局限性，阻碍了某些设备的使用，包括有限的精度和对牺牲样品的需要。在这份报告中，我们使用了一种基于布里渊光谱的方法来快速、远程和非破坏性地探测SMPS的玻璃化转变。此外，我们将布里渊散射得到的T-g与DMA和DSC测量的T-g进行了比较，以证明布里渊散射对于这一应用的准确性。我们的结论是，布里渊光谱是一种获得SMPS玻璃化转变温度的准确技术，与最常见的实验室标准密切一致，同时为独特的聚合物医疗设备的分析提供了一种快速、远程和无损的方法。由AIP出版公司出版。
Emerging medical devices which employ shape memory polymers (SMPs) require precise measurements of the glass transition temperature (T-g) to ensure highly controlled shape recovery kinetics. Conventional techniques like differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) have limitations that prevent utilization for certain devices, including limited accuracy and the need for sacrificial samples. In this report, we employ an approach based on Brillouin spectroscopy to probe the glass transition of SMPs rapidly, remotely, and nondestructively. Further, we compare the T-g obtained from Brillouin scattering with DMA- and DSC-measured T-g to demonstrate the accuracy of Brillouin scattering for this application. We conclude that Brillouin spectroscopy is an accurate technique for obtaining the glass transition temperature of SMPs, aligning closely with the most common laboratory standards while providing a rapid, remote, and nondestructive method for the analysis of unique polymeric medical devices. Published by AIP Publishing.