論文

査読有り
2004年10月

Crystal structure and composition of poly(ethylene terephthalate-co-4,4 '-bibenzoate)

MACROMOLECULES
  • HM Ma
  • ,
  • T Uchida
  • ,
  • DM Collard
  • ,
  • DA Schiraldi
  • ,
  • S Kumar

37
20
開始ページ
7643
終了ページ
7648
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/ma0486905
出版者・発行元
AMER CHEMICAL SOC

The crystal structure in random copolymers poly(ethylene terephthalate-co-4,4'-bibenzoate) (PET/BB) was studied using wide-angle X-ray diffraction (WAXD). The composition of crystalline and amorphous regions has been studied by FTIR spectroscopy using the amorphous peaks at 1580 and 1560 cm(-1) for terephthalate (T) and bibenzoate (B) units, respectively. Further, PET/BB55 was hydrolyzed to selectively etch the amorphous regions. The hydrolyzed products were further studied by FTIR and H-1 NMR spectroscopy, wide-angle X-ray diffraction, and transmission electron microscopy. Results show that crystal structures are very close to that of the respective homopolymer, PET and poly(ethylene bibenzoate) (PEBB) for the low and high BB content samples, respectively. The crystalline region of high BB content fibers is composed of mainly PEBB units. In PET/BB55 fiber, among the 30 wt % of the copolymer which was not etched, there is only one terephthalate unit for every five repeat units of bibenzoate. The crystal size of B type crystals along the c axis was found to be around five repeat units long. Short chain segments rich in BB are sufficient to induce crystallization, to form PEBB-like crystals.

リンク情報
DOI
https://doi.org/10.1021/ma0486905
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000224197500029&DestApp=WOS_CPL
ID情報
  • DOI : 10.1021/ma0486905
  • ISSN : 0024-9297
  • Web of Science ID : WOS:000224197500029

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