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백충기

Baig, Chunggi
Theoretical and Computational Study of Polymers & Nanomaterials Lab.
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dc.citation.conferencePlace KO -
dc.citation.conferencePlace 대전컨벤션센터 -
dc.citation.title 2017 한국화학공학회 추계 학술발표회 -
dc.contributor.author 정소담 -
dc.contributor.author 김준모 -
dc.contributor.author 조수원 -
dc.contributor.author 백충기 -
dc.date.accessioned 2023-12-19T18:07:14Z -
dc.date.available 2023-12-19T18:07:14Z -
dc.date.created 2018-01-10 -
dc.date.issued 2017-10-26 -
dc.description.abstract We present a detailed analysis on the effect of short-chain branches on the structure and dynamics of interfacial chains using atomistic NEMD simulations of confined polyethylene melts. The intrinsically fast random motions of the short branches lead to a compact structure against the imposed flow field, compared with the corresponding linear polymer. Such mobile short branches for the SCB polymer further induce a weaker out-of-plane wagging dynamics of interfacial chains with curvy backbone structures in the intermediate flow regime. Through the contribution of short branches to the interfacial friction between chains and the wall, the SCB polymer shows a nearly constant behavior in the degree of slip (ds) in the weak-to-intermediate flow regime. In the strong flow regime where a tumbling occur via collisions between interfacial chains and the wall, an enhancement effect by short branches on the chain detachment from the wall leads to a steeper increase in ds. Remarkably, the SCB chains at interface exhibits rolling mechanisms along the backbone with a half-dumbbell mesoscopic structure at strong flow fields, in addition to a typical hairpin-like tumbling behavior. -
dc.identifier.bibliographicCitation 2017 한국화학공학회 추계 학술발표회 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/38607 -
dc.language 영어 -
dc.publisher 한국화학공학회 -
dc.title Effect of Short-Chain Branching on Interfacial Polymer Dynamics under Shear Flow -
dc.type Conference Paper -
dc.date.conferenceDate 2017-10-25 -

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