Microstructure characterization of short-chain branching polyethylene with differential scanning calorimetry and successive selfnucleation/annealing thermal fractionation

doi:10.1007/s10118-014-1444-7

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	Microstructure characterization of short-chain branching polyethylene with differential scanning calorimetry and successive selfnucleation/annealing thermal fractionation
	Xue, Yan-hu 1,2; Wang, Yan-hui 1; Fan, Yan-di 1; Yang, He-ran 1; Tang, Tao 1; Bo, Shu-qin 1; Ji, Xiang-ling 1
刊名	CHINESE JOURNAL OF POLYMER SCIENCE
	2014-06-01
卷号	32 期号:6 页码:751-757
关键词	Polyethylene Methylene Sequence Length (Msl) Microstructure Successive Self-nucleation And Annealing (Ssa) Scb
ISSN号	0256-7679
DOI	10.1007/s10118-014-1444-7
英文摘要	A series of the copolymers of ethylene with 1-hexene (M1-M9) synthesized by metallocene catalyst Et[Ind](2)ZrCl2/MAO was studied by differential scanning calorimetry and successive self-nucleation and annealing (SSA) thermal fractionation. The distribution of methylene sequence length (MSL) in the different copolymers was determined using the SSA method. The comonomer contents of samples M4 and M5 are 2.04 mol% and 2.78 mol%, respectively. Both M4 and M5 have low comonomer content and their MSL distribution profiles exhibit a monotonous increase trend with their MSL. The longest MSL of M5 is 167, and its corresponding molar percent is 43.95%, which is higher than that of M4. Moreover, the melting temperature (T (m)) of M5 is also higher than that of M4. The comonomer contents of samples M7, M8, and M9 are 8.73 mol%, 14.18 mol% and 15.05 mol%, respectively. M7, M8, and M9 have high comonomer contents, and their MSL distribution profiles display unimodality. M7 has a lower peak value of 33 and a narrow MSL distribution, resulting in a T (m) lower than that of M8 and M9. The MSL and its distribution are also key points that influence the melting behavior of copolymers. Sometimes, MSL and its distribution of copolymers have a greater impact on it than the total comonomer contents, which is different from traditional views.
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000335496600009
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51171]
专题	中国科学院化学研究所
通讯作者	Ji, Xiang-ling
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, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Xue, Yan-hu,Wang, Yan-hui,Fan, Yan-di,et al. Microstructure characterization of short-chain branching polyethylene with differential scanning calorimetry and successive selfnucleation/annealing thermal fractionation[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2014,32(6):751-757.
APA	Xue, Yan-hu.,Wang, Yan-hui.,Fan, Yan-di.,Yang, He-ran.,Tang, Tao.,...&Ji, Xiang-ling.(2014).Microstructure characterization of short-chain branching polyethylene with differential scanning calorimetry and successive selfnucleation/annealing thermal fractionation.CHINESE JOURNAL OF POLYMER SCIENCE,32(6),751-757.
MLA	Xue, Yan-hu,et al."Microstructure characterization of short-chain branching polyethylene with differential scanning calorimetry and successive selfnucleation/annealing thermal fractionation".CHINESE JOURNAL OF POLYMER SCIENCE 32.6(2014):751-757.