Copolymers obtained by the radiation-induced grafting of styrene onto poly(tetrafluoroethylene-co-perfluoropropylvinyl ether) substrates. 1. Preparation and structural investigation
Copolymers obtained by the radiation-induced grafting of styrene onto poly(tetrafluoroethylene-co-perfluoropropylvinyl ether) substrates. 1. Preparation and structural investigation
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通过辐射诱导将苯乙烯接枝到聚（四氟乙烯-共-全氟丙基乙烯基醚）基材上而获得的共聚物。
DOI：
10.1021/ma0022295
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
J. Maeji
中科院分区：
文献类型：
--
作者：
F. Cardona;G. George;D. Hill;F. Rasoul;J. Maeji
采用同步辐射法研究了苯乙烯在聚全氟丙基乙烯基醚（PFA）基体上的辐射接枝。使用两种不同共聚单体全氟丙基乙烯基醚（PPVE）含量和结晶度的PFA聚合物。考察了单体浓度、溶剂种类、剂量率、辐照剂量等接枝条件对接枝率的影响。在所用的六种不同溶剂中，在增加接枝产率方面最有效的是二氯甲烷、苯和甲醇。接枝的程度随着辐射剂量的增加而增加至500 kGy，在此剂量以上稳定。然而，随着剂量率的增加，接枝率下降。通过FTIR-ATR和显微拉曼光谱证实了苯乙烯在PFA基材上的接枝。接枝物在基材中的渗透深度成比例地增加，伴随着总接枝率的增加。
A study has been made to investigate the radiation grafting of styrene onto poly(tetrafluoroethylene-co-perfluoropropylvinyl ether) (PFA) substrates, using the simultaneous irradiation method. Two PFA polymers of different comonomer perfluoropropyl vinyl ether (PPVE) content and degree of crystallinity were used. Effects of grafting conditions such as monomer concentrations, type of solvent, dose rate, and irradiation dose on the grafting yield were investigated. Of the six different solvents used, the most efficient in terms of increasing grafting yield were dichloromethane, benzene, and methanol. The degree of grafting increased with increasing radiation dose up to 500 kGy, stabilizing above this dose. However, the grafting yield decreased with an increase in the dose rate. The grafting of styrene onto the PFA substrates was confirmed by FTIR-ATR and micro-Raman spectroscopy, The increase in the overall grafting yield was accompanied by a proportional increase in the penetration depth of the grafts into the substrate.