ICCAS OpenIR
Solid-State NMR Characterization of the Multiphase Structure of Polypropylene In-reactor Alloy
Zhu, Haijin1,2; Graf, Robert1; Hou, Guangjin1; Zhao, Ying2; Wang, Dujin2; Spiess, Hans W.1
2010-05-17
Source PublicationMACROMOLECULAR CHEMISTRY AND PHYSICS
ISSN1022-1352
Volume211Issue:10Pages:1157-1166
AbstractA 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.
KeywordDomain Size In-reactor Alloy Phase Behavior Polyolefin Poly(Propylene) Solid State Nmr
DOI10.1002/macp.200900661
Indexed BySCI
Language英语
WOS IDWOS:000278484800009
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/69136
Collection中国科学院化学研究所
Corresponding AuthorGraf, Robert
Affiliation1.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
Recommended Citation
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.
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