The effect of poly(vinyl phenol) sublayer on the crystallization and melting behavior of poly(3-hydroxybutyrate) via hydrogen bonds
The effect of poly(vinyl phenol) sublayer on the crystallization and melting behavior of poly(3-hydroxybutyrate) via hydrogen bonds
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聚(乙烯基苯酚)底层对聚(3-羟基丁酸酯)氢键结晶和熔融行为的影响
DOI:
10.1016/j.polymer.2014.09.018
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发表时间:
2014-10
期刊:
影响因子:
--
通讯作者:
Yan, Shouke
中科院分区:
文献类型:
--
作者:
Li, Huihui;Zhang, Jianming;Sun, Xiaoli;Yan, Shouke
The cold crystallization and melting behavior of poly(3-hydroxybutyrate)(PHB) layer on amorphous Poly(vinyl phenol) (PVPh) and Si wafer substrate were studied by using Grazing incidence X-ray diffraction and infrared reflection-absorption spectroscopy. Compared to the PHB on Si wafer, the PVPh layer shows great influence on the crystallization and melting behavior of PHB layer. The depression extent of melting temperature increases with the increase of PVPh thickness when the thickness of PVPh is smaller than a critical value. Infrared reflection-absorption spectroscopy study is carried out to better understand the structure evolution of PHB and its interaction with PVPh in the heating process. By monitoring and decomposing the Cdouble bondO stretching bands, several points can be identified: (1) melting temperature decreases with PVPh thickening; (2) the fraction of intermolecular hydrogen bonds formed between the OH groups of PVPh and Cdouble bondO groups of PHB is very small below glass transition temperature of PVPh and it increases significantly above 100 °C. Moreover the fraction increases with PVPh thickness. The effect of PVPh thickness on the formation of hydrogen bonds is attributed to the roughness, molecular mobility and/or molecular orientation of PVPh.
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影响因子:
5.5
作者:
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通讯作者:
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影响因子:
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影响因子:
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影响因子:
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影响因子:
5.5
作者:
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