{"title":"Conformational properties of perfluoroalkane chains. VI. Intrinsic viscosity and unperturbed dimensions of poly(decamethylene perfluorosebacate)","authors":"Keizo Matsuo, W. H. Stockmayer, G. F. Needham","doi":"10.1002/polc.5070710110","DOIUrl":null,"url":null,"abstract":"<p>Light-scattering and viscosity measurements are reported for fractions of poly(decamethylene perfluorosebacate). Intrinsic viscosity (dL/g) relationships at 25°C are [η] = 1.55 × 10<sup>−4</sup><i>M<sub>v</sub></i><sup>0.70</sup> in chloroform and (η) = 8.8 × 10<sup>−4</sup><i>M<sub>v</sub></i><sup>0.50</sup> in <i>s</i>-tetrachloroethane. From these data the characteristic ratio is found to be <i>C</i><sub>θ</sub> = 6.3 ± 0.5, indicating that the perfluoroalkane chain is not much more extended than an alkane chain. The solid semicrystalline polymer melts at 45°C, and its x-ray powder pattern suggests a structure different from that of poly(decamethylene sebacate).</p>","PeriodicalId":16867,"journal":{"name":"Journal of Polymer Science: Polymer Symposia","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/polc.5070710110","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymer Science: Polymer Symposia","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/polc.5070710110","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Light-scattering and viscosity measurements are reported for fractions of poly(decamethylene perfluorosebacate). Intrinsic viscosity (dL/g) relationships at 25°C are [η] = 1.55 × 10−4Mv0.70 in chloroform and (η) = 8.8 × 10−4Mv0.50 in s-tetrachloroethane. From these data the characteristic ratio is found to be Cθ = 6.3 ± 0.5, indicating that the perfluoroalkane chain is not much more extended than an alkane chain. The solid semicrystalline polymer melts at 45°C, and its x-ray powder pattern suggests a structure different from that of poly(decamethylene sebacate).
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