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나노물질 및 화학반응 연구단
나노물질 및 화학반응 연구단
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Effect of homopolymer in polymerization-induced microphase separation process

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Title
Effect of homopolymer in polymerization-induced microphase separation process
Author(s)
Jongmin Park; Stacey A. Saba; Marc A. Hillmyer; Dong-Chang Kang; Myungeun Seo
Publication Date
2017-09
Journal
POLYMER, v.126, no., pp.338 - 351
Publisher
ELSEVIER SCI LTD
Abstract
We report on the phase separation behaviors of polymerization mixtures containing a polylactide macro chain transfer agent (PLA-CTA), styrene, divinylbenzene, hydroxyl-terminated PLA (PLA-OH), and a molecular chain transfer agent which enable the ability to tune the pore size of a cross-linked polymer monolith in a facile manner. Cross-linked monoliths were produced from the mixtures via reversible addition-fragmentation chain transfer (RAFT) polymerization and converted into cross-linked porous polymers by selective removal of PLA while retaining the parent morphology. We demonstrate that pore sizes are tunable over a wide range of length scales from the meso- to macroporous regimes by adjusting the ratio of PLA-CTA to PLA-OH in the reaction mixture which causes the phase separation mechanism to change from polymerization-induced microphase separation to polymerization-induced phase separation. The possibility of increasing porosity and inducing simultaneous micro- and macrophase separation was also realized by adjustments in the molar mass of PLA which enabled the synthesis of hierarchically meso- and macroporous polymers. (C) 2017 Elsevier Ltd. All rights reserved
URI
https://pr.ibs.re.kr/handle/8788114/4787
ISSN
0032-3861
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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Polymer 126 (2017) 338e351.pdfDownload

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