Synthesis of functionalized isotactic polypropylene dielectrics for electric energy storage applications

Xuepei Yuan, Yuichi Matsuyama, Tze-chiang Chung

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

The structure-property relationship of isotactic polypropylene (f-PP) copolymers containing various comonomer units that change the semicrystalline morphology and increase dielectric properties was examined. The f-PP copolymers were prepared by the copolymerization of propylene with various comonomers, using both homogeneous and heterogeneous isospecific Ziegler-Natta catalysts. Both borane and silane functional groups were known to be stable in Ziegler-Natta catalysis systems, and the resulting borane- and silane containing PP copolymers were further interconverted into the corresponding OH containing polymers (III). The OH group content in the copolymer III was determined by the peak intensity and protons in the O-Si-(CH3)3 group of the copolymer II or the CH2-OH group of the copolymer III. The high molecular weight, characteristically tapered PP-OH copolymer (III); prepared by the heterogeneous Ziegler-Natta catalyst shows high crystallinity with a unique network structure, via interchain OH groups dimerization (H-bonding), offering high polarizability and good reversibility.

Original languageEnglish (US)
Pages (from-to)4011-4015
Number of pages5
JournalMacromolecules
Volume43
Issue number9
DOIs
StatePublished - May 11 2010

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Electric energy storage
Polypropylenes
Copolymers
Boranes
Silanes
Catalysts
Dimerization
Dielectric properties
Copolymerization
Functional groups
Catalysis
Propylene
Protons
Polymers
Molecular weight

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

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abstract = "The structure-property relationship of isotactic polypropylene (f-PP) copolymers containing various comonomer units that change the semicrystalline morphology and increase dielectric properties was examined. The f-PP copolymers were prepared by the copolymerization of propylene with various comonomers, using both homogeneous and heterogeneous isospecific Ziegler-Natta catalysts. Both borane and silane functional groups were known to be stable in Ziegler-Natta catalysis systems, and the resulting borane- and silane containing PP copolymers were further interconverted into the corresponding OH containing polymers (III). The OH group content in the copolymer III was determined by the peak intensity and protons in the O-Si-(CH3)3 group of the copolymer II or the CH2-OH group of the copolymer III. The high molecular weight, characteristically tapered PP-OH copolymer (III); prepared by the heterogeneous Ziegler-Natta catalyst shows high crystallinity with a unique network structure, via interchain OH groups dimerization (H-bonding), offering high polarizability and good reversibility.",
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Synthesis of functionalized isotactic polypropylene dielectrics for electric energy storage applications. / Yuan, Xuepei; Matsuyama, Yuichi; Chung, Tze-chiang.

In: Macromolecules, Vol. 43, No. 9, 11.05.2010, p. 4011-4015.

Research output: Contribution to journalArticle

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N2 - The structure-property relationship of isotactic polypropylene (f-PP) copolymers containing various comonomer units that change the semicrystalline morphology and increase dielectric properties was examined. The f-PP copolymers were prepared by the copolymerization of propylene with various comonomers, using both homogeneous and heterogeneous isospecific Ziegler-Natta catalysts. Both borane and silane functional groups were known to be stable in Ziegler-Natta catalysis systems, and the resulting borane- and silane containing PP copolymers were further interconverted into the corresponding OH containing polymers (III). The OH group content in the copolymer III was determined by the peak intensity and protons in the O-Si-(CH3)3 group of the copolymer II or the CH2-OH group of the copolymer III. The high molecular weight, characteristically tapered PP-OH copolymer (III); prepared by the heterogeneous Ziegler-Natta catalyst shows high crystallinity with a unique network structure, via interchain OH groups dimerization (H-bonding), offering high polarizability and good reversibility.

AB - The structure-property relationship of isotactic polypropylene (f-PP) copolymers containing various comonomer units that change the semicrystalline morphology and increase dielectric properties was examined. The f-PP copolymers were prepared by the copolymerization of propylene with various comonomers, using both homogeneous and heterogeneous isospecific Ziegler-Natta catalysts. Both borane and silane functional groups were known to be stable in Ziegler-Natta catalysis systems, and the resulting borane- and silane containing PP copolymers were further interconverted into the corresponding OH containing polymers (III). The OH group content in the copolymer III was determined by the peak intensity and protons in the O-Si-(CH3)3 group of the copolymer II or the CH2-OH group of the copolymer III. The high molecular weight, characteristically tapered PP-OH copolymer (III); prepared by the heterogeneous Ziegler-Natta catalyst shows high crystallinity with a unique network structure, via interchain OH groups dimerization (H-bonding), offering high polarizability and good reversibility.

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