Article(id=1323703582360482784, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323703581911692256, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1122220800000, receivedDateStr=2005-07-25, revisedDate=1140969600000, revisedDateStr=2006-02-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1793525127257, onlineDateStr=2026-11-01, pubDate=1157385600000, pubDateStr=2006-09-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793525127257, onlineIssueDateStr=2026-11-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793525127257, creator=13701087609, updateTime=1793525127257, updator=13701087609, issue=Issue{id=1323703581911692256, tenantId=1146029695717560320, journalId=1255847867265597444, year='2006', volume='20', issue='3', pageStart='225', pageEnd='336', issueExtLink='null', onlineDate='null', pubDate='1157385600000', pubDateStr='2006-09-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793525127151, creator='13701087609', updateTime=1793525127151, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=243, endPage=248, ext={EN=ArticleExt(id=1323703582612141025, articleId=1323703582360482784, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Experimental Research on Glass Transition Temperature of Polymers in Compressed CO₂, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Glass transition temperature (T_g) is an important characteristic parameter of polymers. The investigation of polymers' T_g in compressed CO₂ is especially necessary for the application of supercritical fluids technique in polymer science. In this paper, based on creep compliance experimental principle, an apparatus for testing T_g of polymers in high pressure environment is established. Glass transition temperature of PET, PS, PVC and PMMA in atmosphere and in compressed CO₂ has been tested. In the experiment processes, the equilibrium adsorption temperature is room temperature, and the equilibrium adsorption pressure ranges are as following: 0~3.5 MPa for PET, 0~11.0 MPa for PS, 0~9.0 MPa for PVC and 0~4.5 MPa for PMMA. The T_g obtained in atmosphere using this apparatus agree well with those in literature. This proves that the experimental method and the apparatus developed in this work are reliable and valid, so they can be applied to determine T_g of polymers at high pressure. From the results of T_g of polymers in compressed CO₂, we can conclude that CO₂ has distinct swelling and plasticizing effects on polymers, so that CO₂ can make T_g of polymers decrease largely.

, authors=Zhi-Yi LI, Ting-Yu MENG, Xue-Wu LIU, Yi WANG, Da-Peng HU, authorsList=Zhi-Yi LI, Ting-Yu MENG, Xue-Wu LIU, Yi WANG, Da-Peng HU, authorCompany=null, correspAuthors=Xue-Wu LIU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1323703582935102434, articleId=1323703582360482784, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=压缩CO₂中聚合物玻璃化转变温度的实验研究, columnId=null, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

玻璃化转变温度（T_g）是聚合物重要的特性参数，压缩CO₂环境中聚合物的玻璃化转变温度的测定，更是超临界流体技术在聚合物科学领域中成功应用的前提条件。根据蠕变柔量实验原理，自建一套测定高压环境下玻璃化转变温度的实验装置。利用该装置对聚对苯二甲酸乙二醇酯（PET）、聚苯乙烯（PS）、聚氯乙烯（PVC）以及聚甲基丙烯酸甲酯（PMMA）在大气中及压缩CO₂环境中的T_g进行了测定。设定实验的平衡吸附温度为室温，平衡吸附压力范围分别为：PET，0~3.5 MPa；PS，0~11.0 MPa；PVC，0~9.0 MPa；PMMA，0~4.5 MPa。在大气中测定的结果与文献中的结果相吻合，表明所设计的实验方法及实验装置是可靠并有效的，可用于高压环境下聚合物的玻璃化转变温度的测定。从压缩CO₂中的聚合物T_g测定结果可以看出，CO₂对聚合物具有较明显的溶胀、增塑作用，可显著降低聚合物的T_g。

, authors=李志义, 孟庭宇, 刘学武, 王轶, 胡大鹏, authorsList=李志义, 孟庭宇, 刘学武, 王轶, 胡大鹏, authorCompany=null, correspAuthors=刘学武, authorNote=, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=GxnwoD/CnYBfnYdt0imoYA==, magXml=Ye/A3PnQxrr7WdlPxBBoCQ==, pdfUrl=null, pdf=+9aZIs21zBLAyutpcY0LbQ==, pdfFileSize=499305, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=pkP9z/1EizVHkxaZid6P0g==, mapNumber=null, fund=null)}, authors=[Author(id=1323703642972369114, tenantId=1146029695717560320, journalId=1255847867265597444, articleId=1323703582360482784, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=lizy@dlut.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1323703643043672284, tenantId=1146029695717560320, journalId=1255847867265597444, articleId=1323703582360482784, authorId=1323703642972369114, language=EN, stringName=Zhi-Yi LI, firstName=Zhi-Yi, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=R&D Institute of Fluid and Powder Engineering, Dalian University of Technology, Dalian 116012, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1323703643106586845, tenantId=1146029695717560320, journalId=1255847867265597444, articleId=1323703582360482784, authorId=1323703642972369114, language=CN, stringName=李志义, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=大连理工大学流体与粉体工程研究设计所，辽宁 大连　116012, bio={"content":"

李志义（1959—），男，教授，博士生导师，主要从事超临界流体过程及特殊流动过程研究. E-mail：lizy@dlut.edu.cn

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李志义（1959—），男，教授，博士生导师，主要从事超临界流体过程及特殊流动过程研究. E-mail：lizy@dlut.edu.cn

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