{"title":"热刺激充电/放电电流测量法表征聚(对苯硫醚)聚合物","authors":"M.-S.E. Wang, M. Campos, E. Forster","doi":"10.1109/CEIDP.1993.378984","DOIUrl":null,"url":null,"abstract":"Five current peaks were observed in the thermally stimulated current (TSC) spectra of poly(p-phenylene sulfide) (PPS) films over the temperature range of 25 to 250/spl deg/C. At a heating rate of 2/spl deg/C/min, these peaks appeared at 43.5, 92, 121, 163, and 193/spl deg/C, respectively. Based on differential scanning calorimetry and literature data, the a peak at 43.5/spl deg/C and the b peak at 92/spl deg/C were attributed to the dielectric manifestation of sub-T/sub g/ and T/sub g/ transitions, respectively. The c peak at 121/spl deg/C was demonstrated to be caused by the crystallization of the amorphous part during the heating run. The d peak at 163/spl deg/C was likely associated with the slight crosslinking and/or chain extension of the polymers during the sample preparation. The e peak at 193/spl deg/C was attributed to the release of injected space charges trapped at the amorphous-crystal interfaces. A two-step molding method which greatly improved the PPS films' preparation was also developed.<<ETX>>","PeriodicalId":149803,"journal":{"name":"Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP '93)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1993-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Characterization of poly(p-phenylene sulfide) polymers by thermally stimulated charging/discharging currents measurements\",\"authors\":\"M.-S.E. Wang, M. Campos, E. Forster\",\"doi\":\"10.1109/CEIDP.1993.378984\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Five current peaks were observed in the thermally stimulated current (TSC) spectra of poly(p-phenylene sulfide) (PPS) films over the temperature range of 25 to 250/spl deg/C. At a heating rate of 2/spl deg/C/min, these peaks appeared at 43.5, 92, 121, 163, and 193/spl deg/C, respectively. Based on differential scanning calorimetry and literature data, the a peak at 43.5/spl deg/C and the b peak at 92/spl deg/C were attributed to the dielectric manifestation of sub-T/sub g/ and T/sub g/ transitions, respectively. The c peak at 121/spl deg/C was demonstrated to be caused by the crystallization of the amorphous part during the heating run. The d peak at 163/spl deg/C was likely associated with the slight crosslinking and/or chain extension of the polymers during the sample preparation. The e peak at 193/spl deg/C was attributed to the release of injected space charges trapped at the amorphous-crystal interfaces. A two-step molding method which greatly improved the PPS films' preparation was also developed.<<ETX>>\",\"PeriodicalId\":149803,\"journal\":{\"name\":\"Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP '93)\",\"volume\":\"72 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1993-10-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP '93)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CEIDP.1993.378984\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP '93)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEIDP.1993.378984","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Characterization of poly(p-phenylene sulfide) polymers by thermally stimulated charging/discharging currents measurements
Five current peaks were observed in the thermally stimulated current (TSC) spectra of poly(p-phenylene sulfide) (PPS) films over the temperature range of 25 to 250/spl deg/C. At a heating rate of 2/spl deg/C/min, these peaks appeared at 43.5, 92, 121, 163, and 193/spl deg/C, respectively. Based on differential scanning calorimetry and literature data, the a peak at 43.5/spl deg/C and the b peak at 92/spl deg/C were attributed to the dielectric manifestation of sub-T/sub g/ and T/sub g/ transitions, respectively. The c peak at 121/spl deg/C was demonstrated to be caused by the crystallization of the amorphous part during the heating run. The d peak at 163/spl deg/C was likely associated with the slight crosslinking and/or chain extension of the polymers during the sample preparation. The e peak at 193/spl deg/C was attributed to the release of injected space charges trapped at the amorphous-crystal interfaces. A two-step molding method which greatly improved the PPS films' preparation was also developed.<>
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