Controlled/living radical polymerization of isoprene and butadiene in emulsion

Gabriela Bar-Nes; Radford Hall; Vikashni Sharma; Marianne Gaborieau; David Lucas; Patrice Castignolles; Robert G. Gilbert

doi:10.1016/j.eurpolymj.2009.08.004

Controlled/living radical polymerization of isoprene and butadiene in emulsion

Gabriela Bar-Nes, Radford Hall, Vikashni Sharma, Marianne Gaborieau, David Lucas, Patrice Castignolles, Robert G. Gilbert

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

48 Scopus citations

Abstract

A process for RAFT-controlled radical polymerization in emulsion [36] has been applied to the polymerizations of isoprene and of butadiene in emulsion systems, with the goal of producing latex particles containing block copolymers of acrylic acid (stabilizer and starting polymer), styrene (second polymer) and isoprene or butadiene (third polymer). The microstructure of the polymer chains was examined using dual-detection size-exclusion chromatography, and the nanostructure of the materials was investigated by differential scanning calorimetry and solid-state nuclear magnetic resonance. Reactions were always slow (although faster than the corresponding processes in solution), and exhibited limited reinitiation by isoprene when in emulsion. The materials containing isoprene exhibit a nanostructure with a phase separation into high-T_g polystyrene-rich domains and low-T_g polyisoprene-rich domains, revealed by DSC and NMR. This has the potential to lead to barrier materials with novel physical properties.

Original language	English
Pages (from-to)	3149-3163
Number of pages	15
Journal	European Polymer Journal
Volume	45
Issue number	11
DOIs	https://doi.org/10.1016/j.eurpolymj.2009.08.004
State	Published - 1 Nov 2009
Externally published	Yes

Keywords

Barrier products
Butadiene
Emulsion polymerization
Isoprene
Nanophase separation
RAFT

ASJC Scopus subject areas

General Physics and Astronomy
Polymers and Plastics
Organic Chemistry
Materials Chemistry

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10.1016/j.eurpolymj.2009.08.004

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title = "Controlled/living radical polymerization of isoprene and butadiene in emulsion",

abstract = "A process for RAFT-controlled radical polymerization in emulsion [36] has been applied to the polymerizations of isoprene and of butadiene in emulsion systems, with the goal of producing latex particles containing block copolymers of acrylic acid (stabilizer and starting polymer), styrene (second polymer) and isoprene or butadiene (third polymer). The microstructure of the polymer chains was examined using dual-detection size-exclusion chromatography, and the nanostructure of the materials was investigated by differential scanning calorimetry and solid-state nuclear magnetic resonance. Reactions were always slow (although faster than the corresponding processes in solution), and exhibited limited reinitiation by isoprene when in emulsion. The materials containing isoprene exhibit a nanostructure with a phase separation into high-Tg polystyrene-rich domains and low-Tg polyisoprene-rich domains, revealed by DSC and NMR. This has the potential to lead to barrier materials with novel physical properties.",

keywords = "Barrier products, Butadiene, Emulsion polymerization, Isoprene, Nanophase separation, RAFT",

author = "Gabriela Bar-Nes and Radford Hall and Vikashni Sharma and Marianne Gaborieau and David Lucas and Patrice Castignolles and Gilbert, {Robert G.}",

note = "Funding Information: We gratefully acknowledge the financial support of Ansell Sdn. Bhd. and of a Linkage grant (LP0454135) from the Australian Research Council. The help of Chris Such and Algy Serelis of Dulux Australia for a gift of the RAFT agent is much appreciated, as is the supply of butadiene by Steve Etches of RLA Polymers. Useful discussions and advice on RAFT polymerization from Prof S{\'e}bastien Perrier, Dr Ewan Sprong, Dr Desi Ganeva, Dr Binh TT Pham and Dr Brian Hawkett are gratefully acknowledged, as is the participation of Lior Bar-Nes for the RC1 e set-up and Dr Hank de Bruyn for particle size measurements. MG would like to thank the Centre for Magnetic Resonance of the University of Queensland for the use of the solid-state NMR spectrometer. ",

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AU - Bar-Nes, Gabriela

AU - Hall, Radford

AU - Sharma, Vikashni

AU - Gaborieau, Marianne

AU - Lucas, David

AU - Castignolles, Patrice

AU - Gilbert, Robert G.

N1 - Funding Information: We gratefully acknowledge the financial support of Ansell Sdn. Bhd. and of a Linkage grant (LP0454135) from the Australian Research Council. The help of Chris Such and Algy Serelis of Dulux Australia for a gift of the RAFT agent is much appreciated, as is the supply of butadiene by Steve Etches of RLA Polymers. Useful discussions and advice on RAFT polymerization from Prof Sébastien Perrier, Dr Ewan Sprong, Dr Desi Ganeva, Dr Binh TT Pham and Dr Brian Hawkett are gratefully acknowledged, as is the participation of Lior Bar-Nes for the RC1 e set-up and Dr Hank de Bruyn for particle size measurements. MG would like to thank the Centre for Magnetic Resonance of the University of Queensland for the use of the solid-state NMR spectrometer.

PY - 2009/11/1

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N2 - A process for RAFT-controlled radical polymerization in emulsion [36] has been applied to the polymerizations of isoprene and of butadiene in emulsion systems, with the goal of producing latex particles containing block copolymers of acrylic acid (stabilizer and starting polymer), styrene (second polymer) and isoprene or butadiene (third polymer). The microstructure of the polymer chains was examined using dual-detection size-exclusion chromatography, and the nanostructure of the materials was investigated by differential scanning calorimetry and solid-state nuclear magnetic resonance. Reactions were always slow (although faster than the corresponding processes in solution), and exhibited limited reinitiation by isoprene when in emulsion. The materials containing isoprene exhibit a nanostructure with a phase separation into high-Tg polystyrene-rich domains and low-Tg polyisoprene-rich domains, revealed by DSC and NMR. This has the potential to lead to barrier materials with novel physical properties.

AB - A process for RAFT-controlled radical polymerization in emulsion [36] has been applied to the polymerizations of isoprene and of butadiene in emulsion systems, with the goal of producing latex particles containing block copolymers of acrylic acid (stabilizer and starting polymer), styrene (second polymer) and isoprene or butadiene (third polymer). The microstructure of the polymer chains was examined using dual-detection size-exclusion chromatography, and the nanostructure of the materials was investigated by differential scanning calorimetry and solid-state nuclear magnetic resonance. Reactions were always slow (although faster than the corresponding processes in solution), and exhibited limited reinitiation by isoprene when in emulsion. The materials containing isoprene exhibit a nanostructure with a phase separation into high-Tg polystyrene-rich domains and low-Tg polyisoprene-rich domains, revealed by DSC and NMR. This has the potential to lead to barrier materials with novel physical properties.

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ER -

Controlled/living radical polymerization of isoprene and butadiene in emulsion

Abstract

Keywords

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