Glass transition properties of PMMA thin shells deposited on rodlike calcium carbonate particles

Material type: 文書・図像類

Author: SASAKI, T.ほか

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Publication date: 2011-05

Material Format: Digital

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Note (General)：: Rodlike capsules consisting of a calcium carbonate core and a thin shell of poly(methyl methacrylate) (PMMA) were synthesized. The shell thickness d r...

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Material Type: 文書・図像類
Title: Glass transition properties of PMMA thin shells deposited on rodlike calcium carbonate particles
Author/Editor: SASAKI, T.
KURODA, R.
MERAMOTO, M.
YONEZAWA, S.
TSUJI, H.
IRIE, S.
Author Heading: SASAKI, T.
KURODA, R.
MERAMOTO, M.
YONEZAWA, S.
TSUJI, H.
IRIE, S.
Publication Date: 2011-05
Publication Date (W3CDTF): 2011-05
Periodical title: Polymer Journal
No. or year of volume/issue: 43 5
Volume: 43
Issue: 5
Pages: 464-470
Text Language Code: eng
Subject Heading: capsules
PMMA
glass transition
crosslink
Target Audience: 一般
Note (General): Rodlike capsules consisting of a calcium carbonate core and a thin shell of poly(methyl methacrylate) (PMMA) were synthesized. The shell thickness d ranged from 8 to 93 nm, and the degree of crosslink Xc for the polymer shell ranged from 0 to 7.0wt%, where Xc is defined as the mass content of the crosslink monomer (ethylene glycol dimethacrylate). The glass transition temperature Tg and the length scale for dynamic heterogeneity at the glass transition ξ(Tg) for the polymer thin shells were evaluated by temperature-modulated differential scanning calorimetry. It was found that Tg is not altered from the bulk value for d 〓 ca. 20 nm for both filled and hollow shells. The thinnest non-crosslinked shell (d = 8 nm) exhibited a lowered Tg from the bulk value. As for ξ(Tg), no distinct dependence on d was observed for non-crosslinked filled shells. Correlation between ξ(Tg) and Tg was also revealed, which is interpreted in terms of the concept of cooperatively rearranging region.
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=22331&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=22331&item_no=1&attribute_id=22&file_no=1
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