Photo-DSC I: A new tool to study the semi-crystalline polymer accelerated photo-ageing
Photo-DSC I: A new tool to study the semi-crystalline polymer accelerated photo-ageing
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DOI：
10.1016/j.polymer.2005.06.116
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发表时间：
2005-10
期刊：
影响因子：
4.6
通讯作者：
M. Morel;J. Lacoste;M. Baba
中科院分区：
文献类型：
--
作者：
M. Morel;J. Lacoste;M. Baba
本文用光-差示扫描量热法（Photo-DSC）原位研究了半结晶弹性体聚环辛烯的光老化。“结晶性”，即聚合物结晶的能力，与曝光时间密切相关，并用于跟踪光老化。光-DSC的照射系统也进行了比较，与一个通常的加速装置，并没有发现差异的聚合物基体的化学变化。同时，与普通加速装置相比，光-DSC加速了光老化。采用光致差示扫描量热法，对气氛、曝光时间、光照强度和老化温度进行了精确控制。
Photo-DSC was used, to study, in situ, the photo-ageing of polycyclo-octene which is a semi-crystalline elastomer. The ‘crystallizability’, which is the ability of the polymer to crystallize, was tightly dependent on the exposure time and was used to follow the photo-ageing. The irradiation system of photo-DSC was also compared with a usual accelerating device and no difference was detected in the chemical alteration of the polymeric matrix. Meanwhile, with photo-DSC, the photo-ageing was accelerated compared to a usual accelerating device. By using photo-DSC, atmosphere, exposure time, light intensity and ageing temperature were accurately controlled.