Experimental and theoretical characterization of the morphologies in fluorinated polyurethanes
Experimental and theoretical characterization of the morphologies in fluorinated polyurethanes
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DOI：
10.1016/j.polymer.2006.11.063
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发表时间：
2007-01
期刊：
影响因子：
4.6
通讯作者：
Li-Fen Wang
中科院分区：
文献类型：
--
作者：
Li-Fen Wang
通过对含氟聚氨酯和相应的非含氟聚氨酯的调制式差示扫描量热、傅里叶变换红外光谱和量子化学计算分析，研究了氟对聚氨酯分子间氢键的影响以及由此引起的聚氨酯形态的变化。B3 LYP/6- 31 G（d′，p′）计算结果支持了实验结果，表明含氟硬段促进了与软段聚醚的氢键相互作用，同时降低了自缔合硬段的强度.
On the analyses of modulated differential scanning calorimetry, Fourier transform infrared spectra and quantum chemical calculations of fluorinated and corresponding unfluorinated polyurethanes, we investigated the effects of fluorination on the intermolecular hydrogen bonds and resulted morphological changes in polyurethanes. The B3LYP/6-31G(d′,p′) calculated values supported the experimental results suggesting that the fluorinated hard segment facilitates hydrogen bond interactions towards soft segment polyether, while reducing the strengths within self-associated hard segments.