Synthesis of Syndiotactic-polystyrene Based Porous Polymers by Polymerization-Crystallization Induced Phase Separation in Poor Solvent

Naofumi Naga; Keiichi Noguchi; Tomoaki Kouya; Kei Nishii

doi:10.1246/cl.210496

Synthesis of Syndiotactic-polystyrene Based Porous Polymers by Polymerization-Crystallization Induced Phase Separation in Poor Solvent

Naofumi Naga, Keiichi Noguchi, Tomoaki Kouya, Kei Nishii

Research output: Contribution to journal › Article › peer-review

Abstract

Syndiotactic-polystyrene based porous polymers were obtained by polymerizations of styrene (St), 4-methyl styrene (MSt), or 4-tert-butyl styrene (BSt) and copolymerization of St/MeSt, St/BuSt, or St/divinylbenzene (DVB) using a half metallocene catalyst, pentamethyl cyclopentadienyl titanium trichloride (Cp*TiCl3), combined with methylaluminoxane (MAO) as a co-catalyst in a mixture of toluene and hexane (50/50 vol./vol.). The reaction systems turned opaque with progress of the polymerizations accompanied by phase separation. Bulk densities of the resultant polymers were much less than that of the bulk polystyrene. Scanning electron microscopy (SEM) images of the polymers showed a porous structure formed by networked fibers.

Original language	English
Pages (from-to)	30-33
Number of pages	4
Journal	Chemistry Letters
Volume	51
Issue number	1
DOIs	https://doi.org/10.1246/cl.210496
Publication status	Published - 2022 Jan

Keywords

Polymerization
Poor solvent
Syndiotactic polystyrene

ASJC Scopus subject areas

Chemistry(all)

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10.1246/cl.210496

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title = "Synthesis of Syndiotactic-polystyrene Based Porous Polymers by Polymerization-Crystallization Induced Phase Separation in Poor Solvent",

abstract = "Syndiotactic-polystyrene based porous polymers were obtained by polymerizations of styrene (St), 4-methyl styrene (MSt), or 4-tert-butyl styrene (BSt) and copolymerization of St/MeSt, St/BuSt, or St/divinylbenzene (DVB) using a half metallocene catalyst, pentamethyl cyclopentadienyl titanium trichloride (Cp*TiCl3), combined with methylaluminoxane (MAO) as a co-catalyst in a mixture of toluene and hexane (50/50 vol./vol.). The reaction systems turned opaque with progress of the polymerizations accompanied by phase separation. Bulk densities of the resultant polymers were much less than that of the bulk polystyrene. Scanning electron microscopy (SEM) images of the polymers showed a porous structure formed by networked fibers.",

keywords = "Polymerization, Poor solvent, Syndiotactic polystyrene",

author = "Naofumi Naga and Keiichi Noguchi and Tomoaki Kouya and Kei Nishii",

year = "2022",

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doi = "10.1246/cl.210496",

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journal = "Chemistry Letters",

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T1 - Synthesis of Syndiotactic-polystyrene Based Porous Polymers by Polymerization-Crystallization Induced Phase Separation in Poor Solvent

AU - Naga, Naofumi

AU - Noguchi, Keiichi

AU - Kouya, Tomoaki

AU - Nishii, Kei

PY - 2022/1

Y1 - 2022/1

N2 - Syndiotactic-polystyrene based porous polymers were obtained by polymerizations of styrene (St), 4-methyl styrene (MSt), or 4-tert-butyl styrene (BSt) and copolymerization of St/MeSt, St/BuSt, or St/divinylbenzene (DVB) using a half metallocene catalyst, pentamethyl cyclopentadienyl titanium trichloride (Cp*TiCl3), combined with methylaluminoxane (MAO) as a co-catalyst in a mixture of toluene and hexane (50/50 vol./vol.). The reaction systems turned opaque with progress of the polymerizations accompanied by phase separation. Bulk densities of the resultant polymers were much less than that of the bulk polystyrene. Scanning electron microscopy (SEM) images of the polymers showed a porous structure formed by networked fibers.

AB - Syndiotactic-polystyrene based porous polymers were obtained by polymerizations of styrene (St), 4-methyl styrene (MSt), or 4-tert-butyl styrene (BSt) and copolymerization of St/MeSt, St/BuSt, or St/divinylbenzene (DVB) using a half metallocene catalyst, pentamethyl cyclopentadienyl titanium trichloride (Cp*TiCl3), combined with methylaluminoxane (MAO) as a co-catalyst in a mixture of toluene and hexane (50/50 vol./vol.). The reaction systems turned opaque with progress of the polymerizations accompanied by phase separation. Bulk densities of the resultant polymers were much less than that of the bulk polystyrene. Scanning electron microscopy (SEM) images of the polymers showed a porous structure formed by networked fibers.

KW - Polymerization

KW - Poor solvent

KW - Syndiotactic polystyrene

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ER -

Synthesis of Syndiotactic-polystyrene Based Porous Polymers by Polymerization-Crystallization Induced Phase Separation in Poor Solvent

Abstract

Keywords

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