{"title":"聚醚酰亚胺的辐射化学","authors":"Rafil Basheer , Malcolm Dole","doi":"10.1016/0146-5724(85)90287-0","DOIUrl":null,"url":null,"abstract":"<div><p>G-values for crosslinking, G(X) and for chain scissions, G(S), have been determined for the electron beam irradiation at room temperature in vacuum of a polyetherimide called ULTEM by General Electric Co.. In addition, ESR studies of the free radicals produced in ULTEM by γ-irradiation in vacuum at 77K have also been carried out. In the electron beam irradiation experiments the very low G(X) and G(S) values, only 0.014 and 0.005 respectively, demonstrate the high radiation stability of this material. The decay at 70° and 160°C of the free radicals in the electron beam irradiated samples accurately followed the Waite equation. Also the solubility-dose data could be accurately interpreted in terms of the Charlesby-Pinner equation.</p></div>","PeriodicalId":101054,"journal":{"name":"Radiation Physics and Chemistry (1977)","volume":"25 1","pages":"Pages 389-398"},"PeriodicalIF":0.0000,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0146-5724(85)90287-0","citationCount":"16","resultStr":"{\"title\":\"The radiation chemistry of polyetherimides\",\"authors\":\"Rafil Basheer , Malcolm Dole\",\"doi\":\"10.1016/0146-5724(85)90287-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>G-values for crosslinking, G(X) and for chain scissions, G(S), have been determined for the electron beam irradiation at room temperature in vacuum of a polyetherimide called ULTEM by General Electric Co.. In addition, ESR studies of the free radicals produced in ULTEM by γ-irradiation in vacuum at 77K have also been carried out. In the electron beam irradiation experiments the very low G(X) and G(S) values, only 0.014 and 0.005 respectively, demonstrate the high radiation stability of this material. The decay at 70° and 160°C of the free radicals in the electron beam irradiated samples accurately followed the Waite equation. Also the solubility-dose data could be accurately interpreted in terms of the Charlesby-Pinner equation.</p></div>\",\"PeriodicalId\":101054,\"journal\":{\"name\":\"Radiation Physics and Chemistry (1977)\",\"volume\":\"25 1\",\"pages\":\"Pages 389-398\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1985-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0146-5724(85)90287-0\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiation Physics and Chemistry (1977)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0146572485902870\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiation Physics and Chemistry (1977)","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0146572485902870","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 16
摘要
用通用电气公司(General Electric Co.)的ULTEM在室温真空中进行电子束辐照，测定了交联G(X)和链断G(S)的G值。此外，还对真空77K下γ辐照ULTEM中产生的自由基进行了ESR研究。在电子束辐照实验中，G(X)和G(S)值极低，分别为0.014和0.005，表明该材料具有很高的辐射稳定性。在70°和160°C时，电子束辐照样品中自由基的衰变符合Waite方程。此外，溶解度-剂量数据可以用查尔斯比-平纳方程准确地解释。
G-values for crosslinking, G(X) and for chain scissions, G(S), have been determined for the electron beam irradiation at room temperature in vacuum of a polyetherimide called ULTEM by General Electric Co.. In addition, ESR studies of the free radicals produced in ULTEM by γ-irradiation in vacuum at 77K have also been carried out. In the electron beam irradiation experiments the very low G(X) and G(S) values, only 0.014 and 0.005 respectively, demonstrate the high radiation stability of this material. The decay at 70° and 160°C of the free radicals in the electron beam irradiated samples accurately followed the Waite equation. Also the solubility-dose data could be accurately interpreted in terms of the Charlesby-Pinner equation.
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