Solid-State NMR Characterization of the Multiphase Structure of Polypropylene In-reactor Alloy

doi:10.1002/macp.200900661

CORC > 化学研究所 > 中国科学院化学研究所

	Solid-State NMR Characterization of the Multiphase Structure of Polypropylene In-reactor Alloy
	Zhu, Haijin 1,2; Graf, Robert 1; Hou, Guangjin 1; Zhao, Ying 2; Wang, Dujin 2; Spiess, Hans W.1
刊名	MACROMOLECULAR CHEMISTRY AND PHYSICS
	2010-05-17
卷号	211 期号:10 页码:1157-1166
关键词	Domain Size In-reactor Alloy Phase Behavior Polyolefin Poly(Propylene) Solid State Nmr
ISSN号	1022-1352
DOI	10.1002/macp.200900661
英文摘要	A variety of solid-state NMR techniques were used to characterize the chain dynamics, miscibility and the micro-phase structure of a polypropylene (PP) in-reactor alloy system. The alloy was physically separated into three fractions, and the molecular dynamics and relaxation behavior of the pure fractions was then compared with the components in the alloy to achieve comprehensive understanding of the phase structure of the PP in-reactor alloy. The miscibility among different components of the alloy was studied by the rotational frame spin-lattice relaxation time. Proton spin-diffusion methods were used to quantify the domain thicknesses of different regions in the alloy. The results show that the alloy is composed of three phases, namely, a homo-polyethylene (HPE) matrix, a homo-polypropylene (HPP) dispersed phase, and a linear low-density polyethylene (LLDPE) interphase. The thickness of the LLDPE interphase is estimated to be 7.7 nm at room temperature, and changes dramatically with temperature. Finally, based on all the solid-state NMR results, a model for the micro-phase-structure of the PP in-reactor alloy is proposed, and a correlation between the micro-phase structure and the excellent mechanical property is established.
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000278484800009
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/69135]
专题	中国科学院化学研究所
通讯作者	Graf, Robert
作者单位	1.Max Planck Inst Polymer Res, D-55128 Mainz, Germany 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Haijin,Graf, Robert,Hou, Guangjin,et al. Solid-State NMR Characterization of the Multiphase Structure of Polypropylene In-reactor Alloy[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2010,211(10):1157-1166.
APA	Zhu, Haijin,Graf, Robert,Hou, Guangjin,Zhao, Ying,Wang, Dujin,&Spiess, Hans W..(2010).Solid-State NMR Characterization of the Multiphase Structure of Polypropylene In-reactor Alloy.MACROMOLECULAR CHEMISTRY AND PHYSICS,211(10),1157-1166.
MLA	Zhu, Haijin,et al."Solid-State NMR Characterization of the Multiphase Structure of Polypropylene In-reactor Alloy".MACROMOLECULAR CHEMISTRY AND PHYSICS 211.10(2010):1157-1166.