根据石蜡数据预测的聚乙烯热力学性质。

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry Pub Date : 1963-05-01 Epub Date: 1963-06-01 DOI:10.6028/jres.067A.023

Martin G Broadhurst

{"title":"根据石蜡数据预测的聚乙烯热力学性质。","authors":"Martin G Broadhurst","doi":"10.6028/jres.067A.023","DOIUrl":null,"url":null,"abstract":"Thermodynamic data on the n-paraffins from n-C6H14 through n-C18H38 have been used to obtain values for the specific heat, entropy, enthalpy, and Gibbs free energy of a large, ideal CH2-chain crystal from 0 to 420 °K and of the liquid above 200 °K. Analytical expressions are given for the properties of the crystal and liquid above 200 °K. For the crystal, a modified Einstein function was used to adjust the melting temperature to 414.3 °K. Values between 975 and 1025 cal/mole for the heat of fusion were found to be the ones most consistent with the data. Comparison of the results with polyethylene data shows reasonable agreement.","PeriodicalId":94340,"journal":{"name":"Journal of research of the National Bureau of Standards. Section A, Physics and chemistry","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1963-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5319452/pdf/","citationCount":"0","resultStr":"{\"title\":\"Thermodynamic Properties of Polyethylene Predicted from Paraffin Data.\",\"authors\":\"Martin G Broadhurst\",\"doi\":\"10.6028/jres.067A.023\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Thermodynamic data on the n-paraffins from n-C6H14 through n-C18H38 have been used to obtain values for the specific heat, entropy, enthalpy, and Gibbs free energy of a large, ideal CH2-chain crystal from 0 to 420 °K and of the liquid above 200 °K. Analytical expressions are given for the properties of the crystal and liquid above 200 °K. For the crystal, a modified Einstein function was used to adjust the melting temperature to 414.3 °K. Values between 975 and 1025 cal/mole for the heat of fusion were found to be the ones most consistent with the data. Comparison of the results with polyethylene data shows reasonable agreement.\",\"PeriodicalId\":94340,\"journal\":{\"name\":\"Journal of research of the National Bureau of Standards. Section A, Physics and chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1963-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5319452/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of research of the National Bureau of Standards. Section A, Physics and chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.6028/jres.067A.023\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"1963/6/1 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of research of the National Bureau of Standards. Section A, Physics and chemistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6028/jres.067A.023","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"1963/6/1 0:00:00","PubModel":"Epub","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

摘要

通过 n-C6H14 至 n-C18H38 正石蜡的热力学数据，我们获得了 0 至 420 °K 的大型理想 CH2 链晶体和 200 °K 以上液体的比热、熵、焓和吉布斯自由能值。对于高于 200 °K 的晶体和液体的性质，给出了分析表达式。对于晶体，使用修正的爱因斯坦函数将熔化温度调整为 414.3 °K。研究发现，熔化热介于 975 和 1025 卡/摩尔之间的数值与数据最为吻合。将结果与聚乙烯数据进行比较，结果显示两者吻合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Thermodynamic Properties of Polyethylene Predicted from Paraffin Data.

Thermodynamic data on the n-paraffins from n-C₆H₁₄ through n-C₁₈H₃₈ have been used to obtain values for the specific heat, entropy, enthalpy, and Gibbs free energy of a large, ideal CH₂-chain crystal from 0 to 420 °K and of the liquid above 200 °K. Analytical expressions are given for the properties of the crystal and liquid above 200 °K. For the crystal, a modified Einstein function was used to adjust the melting temperature to 414.3 °K. Values between 975 and 1025 cal/mole for the heat of fusion were found to be the ones most consistent with the data. Comparison of the results with polyethylene data shows reasonable agreement.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of research of the National Bureau of Standards. Section A, Physics and chemistry

自引率

0.00%

发文量