화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.27, No.7, 729-737, July, 2019
DOI10.1007/s13233-019-7149-6  Export Citation
Effects of Macromonomeric Length of Ureidopyrimidinone-Induced Supramolecular Polymers on Their Crystalline Structure and Mechanical/Rheological Properties
Soon Ho Jang1, 2, Junhaeng Lee3, Jae Woo Chung3, 4, †, and Seong Hun Kim1, †
  • 1Department of Organic and Nano Engineering, Hanyang University, 17 Haengdang-dong, Sungdong-gu, Seoul 04736, Korea
  • 2Korea Textile Development Institute, 136 Gukchae bosang-ro, Seo-gu, Daegu 41842, Korea
  • 3Department of Information Communication, Materials, and Chemistry Convergence Technology, Soongsil University, 369 Sando-ro, Dongjak-gu, Seoul 06978, Korea
  • 4Department of Organic Materials and Fiber Engineering, Soongsil University, 369 Sando-ro, Dongjak-gu, Seoul 06978, Korea
E-mail:,
To investigate the effect of the macromonomeric length of ureidopyrimidinone-based supramolecular polymers on their crystalline structure and mechanical/rheological properties, we synthesized ureidopyrimidinone-end functional poly(tetramethylene glycol), U(PTMG), with varied molecular weight (1k, 2k, and 3k g·mol?1). From 1H NMR, FT-IR, and specific viscosity analysis, we confirmed chain extension of U(PTMG)s by the quadruple hydrogen bonding of ureidopyrimidinone, indicating successful formation of U(PTMG) supramolecular polymers. We found that the U(PTMG) supramolecular polymers had dual-crystalline structures composed of PTMG and UPy crystals. The rigid UPy crystals, which had relatively high melting temperatures, were dominant with decreasing macromonomeric lengths of the U(PTMG) supramolecular polymers, whereas the chain-folded PTMG crystals were drastically reduced. As a result, the mechanical and rheological properties of the U(PTMG) supramolecular polymers became rigid and elastic, with decreasing macromonomer lengths of the U(PTMG) supramolecular polymers, due to their increased portions of UPy crystals.
Keywords:dual-crystalline structures;hydrogen bonding;poly(tetramethylene glycol);supramolecular polymers;ureidopyrimidinone
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