『徳島大学 教育・研究者情報データベース (EDB)』---[学外] /
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種別 (必須): 学術論文 (審査論文) [継承]
言語 (必須): 英語 [継承]
招待 (推奨):
審査 (推奨): Peer Review [継承]
カテゴリ (推奨):
共著種別 (推奨):
学究種別 (推奨):
組織 (推奨): 1.徳島大学.工学部.化学応用工学科.物質合成化学講座 [継承]
著者 (必須): 1.森 健
役割 (任意): 共著 [継承]
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2. (英) Nakashima Masashi (日) (読)
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学籍番号 (推奨):
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3. (英) Fukuda Yasuhisa (日) (読)
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4.南川 慶二 ([徳島大学.教養教育院])
役割 (任意): 共著 [継承]
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学籍番号 (推奨):
[継承]
5.田中 正己 ([徳島文理大学])
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6. (英) Maeda Yasushi (日) (読)
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学籍番号 (推奨):
[継承]
題名 (必須): (英) Solubule-insoluble-soluble transitions of aqueous poly(N-vinylacetamide-co-acrylic acid) solutions  (日)    [継承]
副題 (任意):
要約 (任意): (英) Several poly(N-vinylacetamide-co-acrylic acid)s with various copolymer compositions have been synthesized, and their unique phase-transition behavior in aqueous salt (Na2SO4 or NaCl) solutions was investigated. Copolymers containing more than 51 mol % N-vinylacetamide (NVA) show reentrant soluble-insoluble-soluble transitions with increasing temperature. The soluble-insoluble transition temperature (T(p1)) increased linearly with increasing NVA content, whereas the insoluble-soluble transition temperature (T(p2)) was almost constant irrespective of the NVA content. Potentiometric titration of the copolymer solutions suggested that the acrylic acid (AA) carboxyl groups form hydrogen bonds with the NVA amide groups even under soluble conditions. Dehydration of the NVA amides and their consequent hydrogen bonding with the AA carboxyl groups during the soluble-insoluble transition process was indicated by FTIR measurements. Addition of salt (Na2SO4 or NaCl) to the aqueous media reduces the solvent quality and enhances the intra- and interchain interactions of the copolymers. Thus, T(p1) was observed to decrease and T(p2) was observed to increase with increasing salt concentration. However, the addition of urea to the media reverses the concentration dependence of T(p1) and T(p2) by disturbing the intra- and interchain interactions of the copolymers.  (日)    [継承]
キーワード (推奨):
発行所 (推奨): アメリカ化学会 [継承]
誌名 (必須): Langmuir ([アメリカ化学会])
(pISSN: 0743-7463, eISSN: 1520-5827)

ISSN (任意): 0743-7463
ISSN: 0743-7463 (pISSN: 0743-7463, eISSN: 1520-5827)
Title: Langmuir : the ACS journal of surfaces and colloids
Title(ISO): Langmuir
Publisher: American Chemical Society
 (NLM Catalog  (Scopus  (CrossRef (Scopus information is found. [need login])
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(必須): 22 [継承]
(必須): 9 [継承]
(必須): 4336 4342 [継承]
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年月日 (必須): 西暦 2006年 3月 24日 (平成 18年 3月 24日) [継承]
URL (任意):
DOI (任意): 10.1021/la060212v    (→Scopusで検索) [継承]
PMID (任意): 16618184    (→Scopusで検索) [継承]
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備考 (任意): 1.(英) Article.Affiliation: Department of Chemical Science and Technology, Faculty of Engineering, University of Tokushima, 2-1 Minamijosanjima, Tokushima 770-8506, Japan. moritcm@mbox.nc.kyushu-u.ac.jp  (日)    [継承]
2.(英) Article.PublicationTypeList.PublicationType: Journal Article  (日)    [継承]

標準的な表示

和文冊子 ● Takeshi Mori, Masashi Nakashima, Yasuhisa Fukuda, Keiji Minagawa, Masami Tanaka and Yasushi Maeda : Solubule-insoluble-soluble transitions of aqueous poly(N-vinylacetamide-co-acrylic acid) solutions, Langmuir, Vol.22, No.9, 4336-4342, 2006.
欧文冊子 ● Takeshi Mori, Masashi Nakashima, Yasuhisa Fukuda, Keiji Minagawa, Masami Tanaka and Yasushi Maeda : Solubule-insoluble-soluble transitions of aqueous poly(N-vinylacetamide-co-acrylic acid) solutions, Langmuir, Vol.22, No.9, 4336-4342, 2006.

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