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Thermal annealing-driven surface sealing of polymeric bowl

Authors
Hwang, Se JeongPark, Ju HyangSon, Jin HoChoi, Ji HyunSeo, HojunPark, MinwooKim, JongbokMoon, Geon DaeHyun, Dong Choon
Issue Date
Jan-2018
Publisher
ELSEVIER SCI LTD
Keywords
Polymer particle; Hollow particle; Porous structure; Surface sealing; Polymer interface
Citation
POLYMER, v.135, pp.338 - 347
Journal Title
POLYMER
Volume
135
Start Page
338
End Page
347
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/4739
DOI
10.1016/j.polymer.2017.11.065
ISSN
0032-3861
Abstract
We investigate surface sealing behavior of polymer hollow particles with an open hole on their surfaces during thermal annealing. A series of processes involving synthesis of polystyrene (PS) solid particles, their swelling with the use of a swelling solvent, and freeze-drying enable us to make hollow particles with a controllable structure including outer/inner diameter and surface hole size. Based on structural change of the hollow particles experimentally observed during thermal annealing above the glass transition temperature of the polymer, we analyze theoretically the sealing behavior of the hollow particles. The experimental and theoretical results conclude that the structure of as-prepared hollow particles determines whether the successful sealing of the particles can be achieved or not. (C) 2017 Elsevier Ltd. All rights reserved.
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공과대학 (화공생명공학부)
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