論文

査読有り
2012年9月

Star polymer with crosslinked core and water-soluble poly(N-hydroxyethylacrylamide)-arms: Synthesis by arm-first method using ATRP and characterizations by SEC-MALS and SAXS measurement in water

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
  • Atsushi Narumi
  • ,
  • Yoko Ohashi
  • ,
  • Daichi Togashi
  • ,
  • Yuta Saito
  • ,
  • Yuji Jinbo
  • ,
  • Yoshinobu Izumi
  • ,
  • Keigo Matsuda
  • ,
  • Toyoji Kakuchi
  • ,
  • Seigou Kawaguchi

50
17
開始ページ
3546
終了ページ
3559
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/pola.26139
出版者・発行元
WILEY-BLACKWELL

Core crosslinked star (CCS)-polymers with water-soluble arms composed of poly(N-hydroxyethylacrylamide) (PHEAA) are described. N-Hydroxyethylacrylamide was polymerized by the atom transfer radical polymerization consisting of ethyl 2-chloropropionate, copper(I) chloride (CuCl), and tris[2-(dimethylamino)ethyl]amine in an ethanol/water mixed solvent at 20 degrees C. The obtained PHEAA-arms were subsequently coupled using N,N'-methylenebisacrylamide as the crosslinking agent and sodium L-ascorbic acid (AscNa) as the reaction activator. A total of 17 representative coupling reactions with diverse conditions are discussed together with the characterizations of the products mainly by size exclusion chromatograph equipped with the multiangle laser light scattering detector (SEC-MALS). Consequently, the coupling reactions provided CCS-polymers with PHEAA-arms (CCS-PHEAAs) having weight averaged-molecular weights determined by SEC-MALS (M-w,M-MALS) ranging from 63.8 kg mol(-1) to 832 kg mol(-1), which corresponded to the average arm-number (N-arm) ranging from 4.1 to 42, respectively. CCS-PHEAA with the M-w,M-MALS of 250 kg mol(-1) was isolated and characterized by small angle X-ray scattering measurements in 0.05 M NaNO3 aq. at 25 degrees C, which was shown to possess a star-shaped structure and exist as single molecules with a radius of gyration at the infinite dilution condition (< R-g(2)>(1/2)(z,0)) of 74 +/- 4 angstrom. (C) 2012 Wiley Periodicals, Inc.

Web of Science ® 被引用回数 : 5

リンク情報
DOI
https://doi.org/10.1002/pola.26139
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000306962100011&DestApp=WOS_CPL

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