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Radiation-induced grafting of styrene onto poly(tetrafluoroethylene) (PTFE) films. I. Effect of grafting conditions and properties of the grafted films

机译:辐射诱导的苯乙烯接枝到聚四氟乙烯(PTFE)薄膜上。一,接枝条件和接枝膜性能的影响

摘要

Radiation-induced grafting of styrene onto poly(tetra¯uoroethylene) (PTFE) films was studied by a simultaneous irradiation technique. Grafting was carried out using g-radiation from a 60Co source at dose rates of 1.32±15.0kGyhÿ1 at room temperature. The effects of type of diluent, dose rate, irradiation dose, and the initial monomer concentration in the grafting solution on the degree of grafting were investigated. The degree of grafting was found to be strongly dependent upon the grafting conditions. The dependence of the initial rate of grafting on the dose rate and the initial monomer concentration in the grafting solution was found to be in the order of 0.6 and 1.7, respectively. The chemical structure and the crystallinity of the grafted PTFE films were studied by means of Fouriertransform infrared, (FTIR), electron spectroscopy for chemical analysis (ESCA) and X-ray diffractometry (XRD).
机译:通过同时辐照技术研究了辐射诱导的苯乙烯在聚四氟乙烯(PTFE)膜上的接枝。嫁接进行了使​​用从60Co来源在室温下的剂量率1.32±15.0kGyhÃ1的g辐射。研究了稀释剂类型,剂量率,辐照剂量和接枝溶液中初始单体浓度对接枝度的影响。发现接枝程度强烈取决于接枝条件。发现接枝的初始速率对剂量率和接枝溶液中的初始单体浓度的依赖性分别为0.6和1.7的量级。借助傅立叶变换红外光谱(FTIR),化学分析电子能谱(ESCA)和X射线衍射仪(XRD)研究了接枝PTFE膜的化学结构和结晶度。

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