In situ fourier-transform infrared spectra analysis of hydrogen bond in polypropylene/chlorinated polypropylene/polyaniline composite
In situ fourier-transform infrared spectra analysis of hydrogen bond in polypropylene/chlorinated polypropylene/polyaniline composite
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DOI：
10.1002/pen.23215
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发表时间：
2012-12
影响因子：
3.2
通讯作者：
Lin Yang;Zhiye Zhang;Xinlong Wang;Jinyao Chen;Huilin Li
中科院分区：
文献类型：
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作者：
Lin Yang;Zhiye Zhang;Xinlong Wang;Jinyao Chen;Huilin Li
以往的研究表明，氯化聚丙烯(CPP)和聚苯胺(PANI)之间的氢键对PP/CPP/PANI复合材料的电性能起着重要的决定作用。用原位傅里叶变换红外光谱检测和鉴定了氢键与温度的关系。用迭代最小二乘法计算机程序对氮-氢键(NH)、硫-氧双键(SO)和碳-氯键(CCL)拉伸区的两种氢键进行了详细的研究，得到了最佳的光谱拟合度。计算了“游离”和两种氢键NH的吸光系数之比和摩尔分数。两种氢键NH含量与温度的关系曲线有一个明显的转折点。在SO拉伸区也存在这种现象，转折点在60℃左右，氢键CCL的摩尔分数随温度的升高而减小，而“游离”CCL的摩尔分数随温度的升高而增大。氢键NH-…之间的热差OS和氢键NH-…CLC的解离也达到了23.2kJ/mol。波兰姆。英语。《科学》，2012。2012美国塑料工程师学会
The previous studies suggest that hydrogen bond between chlorinated polypropylene (CPP) and polyaniline (PANI) plays a prominent role in the decision of polypropylene/CPP/PANI composites' electric property. In situ Fourier-transform infrared spectra were employed to detect and identify the relationship between the hydrogen bond and the temperature. Two kinds of hydrogen bond were carefully studied in the nitrogen–hydrogen bond (NH) stretching, sulfur–oxygen double bond (SO) stretching, and carbon–chlorine bond (CCl) stretching regions, using an iterative least-squares computer program to obtain the best fit of spectra. The ratio of absorptivity coefficients and the mole fraction of the “free” and two kinds of H-bonded NH were calculated. There exists an apparent turning point in the curves of the relationship between the fraction of two kinds of H-bonded NH and temperature. This phenomenon also exists in the SO stretching region, and the turning point is at about 60°C. The mole fraction of H-bonded CCl decreases, and that of “free” CCl increases with increasing temperature. The enthalpy gap between the H-bonded NH…OS and the H-bonded NH…ClC dissociation was also obtained as 23.2 KJ/mol. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers