An in situ FTIR study of undoped PolyBenzoImadazole as a function of relative humidity
An in situ FTIR study of undoped PolyBenzoImadazole as a function of relative humidity
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未掺杂聚苯并咪唑随相对湿度变化的原位 FTIR 研究
DOI：
10.1016/j.polymdegradstab.2014.04.020
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发表时间：
2014
影响因子：
5.9
通讯作者：
Steven Jones
中科院分区：
文献类型：
--
作者：
P. Christensen;Steven Jones
为了更好地了解聚苯并咪唑(PBI)的红外响应，并为酸掺杂PBI的后续研究提供基准数据，我们使用H2O和D2O研究了未掺杂的聚苯并咪唑(PBI)浇铸膜随湿度的变化，以及高达100℃的温度变化。在水分和D2O的吸收过程中，观察到了中红外光谱的显著变化。事实证明，D2O的使用在消除所观察到的复杂的IR响应方面非常有用，并允许根据N-H…的干扰对IR数据进行合理化N链间氢键网络和聚合物形态的变化。
Undoped, cast films of PolyBenzoImadazole (PBI) were investigated as a function of humidity using both H2O and D2O, and as a function of temperature up to 100 °C in order to better understand the infrared response of this polymer, as well as to provide benchmark data for subsequent studies on acid doped PBI. Marked changes across the mid-IR range were observed during the uptake of water and D2O. The use of D2O proved extremely useful in terms of deconvoluting the complex IR response observed and allowed the IR data to be rationalised in terms of the disruption of the N–H … N inter-chain hydrogen bonded network and changes in the morphology of the polymer.