Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization

Core-crosslinked star polymers were prepared using organocatalyzed living radical polymerization via a “grafting-through” approach. A PBA homopolymer, an amphiphilic PMMA–PPEGA block copolymer, and a hard-soft PMMA–PBA block copolymer were synthesized as macroinitiators, where PBA is poly(butyl acry...

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Main Authors: Zheng, Yichao, Sarkar, Jit, Niino, Hiroshi, Chatani, Shunsuke, Hsu, Shu Yao, Goto, Atsushi
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/153594
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1535942023-02-28T19:53:04Z Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization Zheng, Yichao Sarkar, Jit Niino, Hiroshi Chatani, Shunsuke Hsu, Shu Yao Goto, Atsushi School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Science::Chemistry::Organic chemistry::Polymers Polymers Acrylic Monomers Core-crosslinked star polymers were prepared using organocatalyzed living radical polymerization via a “grafting-through” approach. A PBA homopolymer, an amphiphilic PMMA–PPEGA block copolymer, and a hard-soft PMMA–PBA block copolymer were synthesized as macroinitiators, where PBA is poly(butyl acrylate), PMMA is poly(methyl methacrylate), and PPEGA is poly(poly(ethylene glycol) methyl ether acrylate). The macroinitiators were utilized in the polymerizations of crosslinkable divinyl monomers, generating core-crosslinked star polymers in 40–80% yields. The PMMA–PBA block copolymer macroinitiator was synthesized from a PMMA with an unsaturated chain end (PMMA–Y) via an addition-fragmentation chain transfer method. The ease of the handling of PMMA–Y is an advantage of the use of PMMA–Y. One-pot synthesis of a PBA star was also successful, giving a star in a relatively high yield (73%). The one-pot synthesis offers a practical approach for synthesizing a core-crosslinked star. The present approach is free from metals and odorous compounds, which is an attractive feature of the present approach. National Research Foundation (NRF) Accepted version This work was partly supported by National Research Foundation (NRF) Investigatorship in Singapore (NRF-NRFI05-2019-0001). 2021-12-12T08:20:08Z 2021-12-12T08:20:08Z 2021 Journal Article Zheng, Y., Sarkar, J., Niino, H., Chatani, S., Hsu, S. Y. & Goto, A. (2021). Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization. Polymer Chemistry, 12(28), 4043-4051. https://dx.doi.org/10.1039/D1PY00663K 1759-9954 https://hdl.handle.net/10356/153594 10.1039/D1PY00663K 28 12 4043 4051 en NRF-NRFI05-2019-0001 Polymer Chemistry © 2021 The Royal Society of Chemistry. All rights reserved. This paper was published in Polymer Chemistry and is made available with permission of The Royal Society of Chemistry. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Chemistry::Organic chemistry::Polymers
Polymers
Acrylic Monomers
spellingShingle Science::Chemistry::Organic chemistry::Polymers
Polymers
Acrylic Monomers
Zheng, Yichao
Sarkar, Jit
Niino, Hiroshi
Chatani, Shunsuke
Hsu, Shu Yao
Goto, Atsushi
Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization
description Core-crosslinked star polymers were prepared using organocatalyzed living radical polymerization via a “grafting-through” approach. A PBA homopolymer, an amphiphilic PMMA–PPEGA block copolymer, and a hard-soft PMMA–PBA block copolymer were synthesized as macroinitiators, where PBA is poly(butyl acrylate), PMMA is poly(methyl methacrylate), and PPEGA is poly(poly(ethylene glycol) methyl ether acrylate). The macroinitiators were utilized in the polymerizations of crosslinkable divinyl monomers, generating core-crosslinked star polymers in 40–80% yields. The PMMA–PBA block copolymer macroinitiator was synthesized from a PMMA with an unsaturated chain end (PMMA–Y) via an addition-fragmentation chain transfer method. The ease of the handling of PMMA–Y is an advantage of the use of PMMA–Y. One-pot synthesis of a PBA star was also successful, giving a star in a relatively high yield (73%). The one-pot synthesis offers a practical approach for synthesizing a core-crosslinked star. The present approach is free from metals and odorous compounds, which is an attractive feature of the present approach.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Zheng, Yichao
Sarkar, Jit
Niino, Hiroshi
Chatani, Shunsuke
Hsu, Shu Yao
Goto, Atsushi
format Article
author Zheng, Yichao
Sarkar, Jit
Niino, Hiroshi
Chatani, Shunsuke
Hsu, Shu Yao
Goto, Atsushi
author_sort Zheng, Yichao
title Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization
title_short Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization
title_full Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization
title_fullStr Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization
title_full_unstemmed Synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization
title_sort synthesis of core-crosslinked star polymers via organocatalyzed living radical polymerization
publishDate 2021
url https://hdl.handle.net/10356/153594
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