Calibration curve establishment and fractionation temperature selection of polyethylene for preparative temperature rising elution fractionation

	Calibration curve establishment and fractionation temperature selection of polyethylene for preparative temperature rising elution fractionation
	Xue, Yan-hu 1,2; Bo, Shu-qin 1; Ji, Xiang-ling 1
刊名	CHINESE JOURNAL OF POLYMER SCIENCE
	2015-07-01
卷号	33 期号:7 页码:1000-1008
关键词	TREF Calibration curve Fractionation temperature SSA Polyethylene
英文摘要	A series of copolymers of ethylene with 1-hexene synthesized using a metallocene catalyst are selected and mixed. The blend is fractionated via preparative temperature rising elution fractionation (P-TREF). All fractions are characterized via high-temperature gel permeation chromatography (GPC), C-13 nuclear magnetic resonance spectroscopy (C-13-NMR), and differential scanning calorimetry (DSC). The changes in the DSC melting peak temperatures of the fractions from P-TREF as a function of elution temperature are almost linear, thereby providing a reference through which the elution temperature of TREF experiments could be selected. Moreover, the standard calibration curve (ethylene/1-hexene) of P-TREF is established, which relates to the degree of short-chain branching of the fractions. The standard calibration curve of P-TREF is beneficial to study on the complicated branching structure of polyethylene. A convenient method for selecting the fractionation temperature for TREF experiments is elaborated. The polyethylene sample is fractionated via successive self-nucleation and annealing (SSA) thermal fractionation. A multiple-melting endotherm is obtained through the final DSC heating scan for the sample after SSA thermal fractionation. A series of fractionation temperatures are then selected through the relationship between the DSC melting peak temperature and TREF elution temperature.
收录类别	SCI
语种	英语
公开日期	2015-11-02
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/28036]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xue, Yan-hu,Bo, Shu-qin,Ji, Xiang-ling. Calibration curve establishment and fractionation temperature selection of polyethylene for preparative temperature rising elution fractionation[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2015,33(7):1000-1008.
APA	Xue, Yan-hu,Bo, Shu-qin,&Ji, Xiang-ling.(2015).Calibration curve establishment and fractionation temperature selection of polyethylene for preparative temperature rising elution fractionation.CHINESE JOURNAL OF POLYMER SCIENCE,33(7),1000-1008.
MLA	Xue, Yan-hu,et al."Calibration curve establishment and fractionation temperature selection of polyethylene for preparative temperature rising elution fractionation".CHINESE JOURNAL OF POLYMER SCIENCE 33.7(2015):1000-1008.