Effects of Macromonomeric Length of Ureidopyrimidinone-Induced Supramolecular Polymers on Their Crystalline Structure and Mechanical/Rheological Properties

다국어 초록 (Multilingual Abstract)

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.

참고문헌 (Reference)

1 L. Brunsveld, 101 : 4071-, 2001

2 J. W. Chung, 292 : 627-, 2007

3 H. M. Keizer, 2004 : 2553-, 2004

4 S. -Y. Ryu, 31 : 9473-, 2015

5 R. Dong, 27 : 498-, 2015

6 A. Jangizehi, 53 : 848-, 2014

7 M. W. Urban, 34 : 679-, 2009

8 G. M. L. van Gemert, 213 : 234-, 2012

9 F. Herbst, 34 : 203-, 2013

10 A. Campanella, 39 : 1700739-, 2018

11 T. Aida, 335 : 813-, 2012

12 B. C-K. Tee, 7 : 825-, 2012

13 T. F. A. De Greef, 109 : 5687-, 2009

14 L. Yang, 115 : 7196-, 2015

15 R. P. Sijbesma, 4 : 24-, 1999

16 H. M. Keizer, 44 : 5505-, 2003

17 R. P. Sijbesma, 278 : 1601-, 1997

18 S. H. M. Söntjens, 122 : 7487-, 2000

19 H. Kautz, 39 : 4265-, 2006

20 J. H. K. K. Hirschberg, 32 : 2696-, 1999

21 B. J. B. Folmer, 12 : 874-, 2000

22 A. Bertrand, 33 : 2062-, 2012

23 J. -L. Wietor, 44 : 1211-, 2011

24 S. K. Yang, 40 : 129-, 2011

25 K. Cao, 50 : 2016-, 2017

26 S. Nojiri, 87 : 308-, 2016

27 A. T. T. Cate, 126 : 3801-, 2004

28 D. J. M. van Beek, 40 : 8464-, 2007

29 N. E. Botterhuis, 46 : 3877-, 2008

30 M. M. L. Nieuwenhuizen, 16 : 1601-, 2010

31 W. P. J. Appel, 44 : 6776-, 2011

32 W. Zhou, 109 : 21-, 2014

33 Amol Balu Atar, "Metallo-Supramolecular Polymers Made of Cobalt and 3,4-Propylenedioxythiophene-Bisterpyridine Complexes for Electrochromic Applications" 한국고분자학회 26 (26): 814-818, 2018

34 H. Sylvia, "EP 2638075 B1"