Loop and Bridge Conformations of ABA Triblock Comb Copolymers: A Conformational Assessment for Molecular Compositesopen access
- Authors
- Park, Jihoon; Jung, Je-Yeon; Shin, Hyun-Woo; Park, Jong-Wan; Bang, Joona; Huh, June
- Issue Date
- 6월-2022
- Publisher
- MDPI
- Keywords
- triblock copolymer; comb polymer; bridge conformation; loop conformation
- Citation
- POLYMERS, v.14, no.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMERS
- Volume
- 14
- Number
- 11
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/143033
- DOI
- 10.3390/polym14112301
- ISSN
- 2073-4360
- Abstract
- We computationally investigate the conformational behavior, "bridging" chain, between different the phase-separated domains vs "looping" chain on the same domain, for two chain architectures of ABA triblock copolymers, one with a linear architecture (L-TBC) and the other with comb architecture (C-TBC) at various segregation regimes using dissipative particle dynamics (DPD) simulations. The power-law relation between the bridge fraction (Phi) and the interaction parameter (chi) for C-TBC is found to be Phi similar to chi(-1.6) in the vicinity of the order-disorder transition (chi(ODT)), indicating a drastic conversion from the bridge to the loop conformation. When x further increases, the bridge-loop conversions slow down to have the power law, Phi similar to chi(-0.)(18), approaching the theoretical power law Phi similar to chi(-1/9) predicted in the strong segregation limit. The conformational assessment conducted in the present study can provide a strategy of designing optimal material and processing conditions for triblock copolymer either with linear or comb architecture to be used for thermoplastic elastomer or molecular nanocomposites.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
- Graduate School > Department of Life Sciences > 1. Journal Articles
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