Glass transition of crosslinked polystyrene shells formed on the surface of calcium carbonate whisker

Material type: 文書・図像類

Author: SASAKI, Takashiほか

Publisher: JOHN WILEY & SONS

Publication date: 2006-09

Material Format: Digital

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Note (General)：: Glass transition of core/shell capsules consisting of calcium carbonate whisker as a core and crosslinked polystyrene as a shell was studied by differ...

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Material Type: 文書・図像類
Title: Glass transition of crosslinked polystyrene shells formed on the surface of calcium carbonate whisker
Author/Editor: SASAKI, Takashi
KAWAGOE, Shoko
MITSUYA, Hajime
IRIE, Satoshi
SAKURAI, Kensuke
Author Heading: SASAKI, Takashi
KAWAGOE, Shoko
MITSUYA, Hajime
IRIE, Satoshi
SAKURAI, Kensuke
Publication, Distribution, etc.: JOHN WILEY & SONS
Publication Date: 2006-09
Publication Date (W3CDTF): 2006-09
Periodical title: Journal of polymer science. Part B: Polymer physics
No. or year of volume/issue: 44 17
Volume: 44
Issue: 17
Pages: 2475-2485
Text Language Code: eng
Subject Heading: calcium carbonate whisker
core/shell capsules
crosslinked polystyrene
DSC
glass transition
Target Audience: 一般
Note (General): Glass transition of core/shell capsules consisting of calcium carbonate whisker as a core and crosslinked polystyrene as a shell was studied by differential scanning calorimetry(DSC). The thickness of the crosslinked shell was in the range of 26-81 nm. The crosslinked shells were revealed to show higher glass transition temperatures (Tg) than the corresponding bulk values. It was revealed that a thicker shell exhibits a lower Tg than a thinner shell, and that capsules without core (hollow capsules) exhibit lower Tg's than the corresponding core/shell capsules. These results suggest that the interfacial molecular interaction plays a role in the segmental relaxation, which is responsible for the glass transition. The difference in Tg between the core/shell and hollow samples was reduced when a coupling agent, methacrylic acid 3-(tri-methoxysilyl)propyl ester was not included. This also suggests the interfacial effect on Tg. However, the results still suggest that the enhancement of Tg for the present crosslinked shells is not only due to the interfacial effect but also to the effects of chain configuration and heterogeneous crosslink.
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ