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首页> 外文期刊>Journal of Applied Polymer Science >Grafting of Acrylic Acid-co-Itaconic Acid onto ePTFE and Characterization of Water Uptake by the Graft Copolymers
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Grafting of Acrylic Acid-co-Itaconic Acid onto ePTFE and Characterization of Water Uptake by the Graft Copolymers

机译：丙烯酸-共-衣康酸接枝到ePTFE上以及接枝共聚物吸水率的表征

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摘要

Expanded polytetrafluoroethylene, ePTFE, is an attractive material for use as the implant in facial reconstruction surgery because it is bioinert; however, its low surface energy does not facilitate a strong interfacial bond with bone and thus for some applications the surfaces need to be modified to enhance their bone-integration properties. The surface modification of ePTFE membranes with copolymers of acrylic acid (AA) and itaconic acid (IA) using in situ gamma radiation induced grafting has been studied. Solutions with AA mole fractions ranging from 0.4 to 1.0 have been investigated. Graft yields of 35-50% with water uptakes of greater than 300% were obtained using 3 mol L-1 aqueous solutions of the monomers and a total incident dose of 10 kGy. The grafts were characterized by Fourier transform infrared and X-ray photoelectron spectroscopy analyses and the compositional microstructure of the grafted copolymers was investigated. The water uptake by the grafted membranes displayed a complex dependence on polymer chemistry and topology. (C) 2014 Wiley Periodicals, Inc.
机译：膨体聚四氟乙烯（ePTFE）具有生物惰性，是一种有吸引力的材料，可在面部重建手术中用作植入物。然而，其低表面能不能促进与骨骼的牢固界面结合，因此，对于某些应用，需要对表面进行修饰以增强其骨骼整合性能。研究了原位伽马射线诱导的接枝对丙烯酸（AA）和衣康酸（IA）的共聚物对ePTFE膜的表面改性。已经研究了AA摩尔分数为0.4至1.0的溶液。使用3 mol L-1单体水溶液和10 kGy的总入射剂量，可以得到35-50％的接枝率，吸水率大于300％。通过傅里叶变换红外光谱和X射线光电子能谱分析对接枝物进行表征，研究了接枝共聚物的组成微观结构。接枝膜对水的吸收表现出对聚合物化学和拓扑结构的复杂依赖性。 （C）2014威利期刊公司

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