Preparing Low-Surface-Energy Polymer Materials by Minimizing Intermolecular Hydrogen-Bonding Interactions
Preparing Low-Surface-Energy Polymer Materials by Minimizing Intermolecular Hydrogen-Bonding Interactions
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DOI：
10.1021/jp9059642
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发表时间：
2009-12-03
影响因子：
3.7
通讯作者：
Jeong, Kwang-Un
中科院分区：
文献类型：
--
作者：
Kuo, Shiao-Wei;Wu, Yi-Chen;Jeong, Kwang-Un
在这项研究中，我们发现，聚（乙烯基苯酚）/聚苯并恶嗪（PVPh/PBZ）共聚物具有低的表面能时，它们具有最小数量的分子间氢键相互作用。例如，PVPh/PBZ = 30/70在热固化后表现出极低的表面能，为16.8 mJ/m（2）--甚至低于聚（β）的表面能（22.0 mJ/m（2））--基于使用双液体几何方法进行的计算。红外光谱分析表明，在PVPh/PBZ共聚物的分子间氢键的程度降低导致在较低的表面自由能。然而，分子间氢键的增加确实增强了热性能，即玻璃化转变温度、热分解温度和炭产率。操纵分子间氢键相互作用是制备低表面能材料的独特而简单的方法，而不需要使用含氟聚合物或有机硅。
In this study, we found that poly(vinyl phenol)/polybenzoxazine (PVPh/PBZ) copolymers feature low surface energies when they possess a minimal number of intermolecular hydrogen-bonding interactions. For example, PVPh/PBZ = 30/70 exhibits an extremely low surface energy of 16.8 mJ/m(2) after thermal curing-even lower than that of poly(tetrafluoroethylene) (22.0 mJ/m(2))-based on calculations performed using a two-liquid geometric method. Infrared spectroscopic analyses indicated that a decrease in the degree of intermolecular hydrogen bonding in the PVPh/PBZ copolymers resulted in a lower surface free energy. An increase in the intermolecular hydrogen bonding did, however, enhance the thermal properties, namely, the glass-transition temperature, the thermal decomposition temperature, and the char yield. The manipulation of intermolecular hydrogen-bonding interactions is a unique and simple approach toward preparing low-surface-energy materials without the need to employ fluoropolymers or silicones.