Multiple interaction regulated phase transition behavior of thermo-responsive copolymers containing cationic poly(ionic liquid)s.
作者： Yingna Zhang , Hui Tang , Peiyi Wu
DOI: 10.1039/C7CP05846B
关键词:
摘要: The effect of multiple interactions including anion-macromolecule interaction, water-mediated ion-macromolecule interaction and hydrophobic on the phase transition behaviors random copolymers P(OEGMA-co-BVIm[X]) comprising oligo(ethylene glycol)methacrylate (OEGMA) imidazolium-based ionic liquids is investigated in present study. Temperature-variable 1H NMR FT-IR investigations demonstrated that hydration CH2 side chains P(OEGMA-co-BVIm[SCN]) was enhanced due to anion-dipole between a chaotropic anion SCN- groups, dehydration C[double bond, length as m-dash]O groups served driving force transition. In particular, formation m-dash]OD2O-PIL hydrogen bonds preferred during process considering IL-D2O associations groups. This acted "linkage" among polymers, resulting gradual stable small size micelles. As for P(OEGMA-co-BVIm[NTf2]), water molecules were sequentially squeezed out polymer upon heating self-aggregation carried through OEGMA with IL segments wrapped aggregates.
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C. Remzi Becer, Sabine Hahn, Martin W. M. Fijten, Hanneke M. L. Thijs, Richard Hoogenboom, Ulrich S. Schubert, Libraries of methacrylic acid and oligo(ethylene glycol) methacrylate copolymers with LCST behavior Journal of Polymer Science Part A. ,vol. 46, pp. 7138- 7147 ,(2008) , 10.1002/POLA.23018
Ge Wang, Peiyi Wu, Toward the dynamic phase transition mechanism of a thermoresponsive ionic liquid in the presence of different thermoresponsive polymers Soft Matter. ,vol. 12, pp. 925- 933 ,(2016) , 10.1039/C5SM02032H
Jiří Spěváček, None, NMR investigations of phase transition in aqueous polymer solutions and gels Current Opinion in Colloid & Interface Science. ,vol. 14, pp. 184- 191 ,(2009) , 10.1016/J.COCIS.2008.10.003
Erno Karjalainen, Naveen Chenna, Pasi Laurinmäki, Sarah J. Butcher, Heikki Tenhu, Diblock copolymers consisting of a polymerized ionic liquid and poly(N-isopropylacrylamide). Effects of PNIPAM block length and counter ion on self-assembling and thermal properties Polymer Chemistry. ,vol. 4, pp. 1014- 1024 ,(2013) , 10.1039/C2PY20815F
Zhangwei Wang, Peiyi Wu, The influence of ionic liquid on phase separation of poly(N-isopropylacrylamide) aqueous solution RSC Advances. ,vol. 2, pp. 7099- 7108 ,(2012) , 10.1039/C2RA01349E
Long-Hai Wang, Ting Wu, Ze Zhang, Ye-Zi You, Unconventional Transitions of Poly(N-isopropylacrylamide) upon Heating in the Presence of Multiple Noncovalent Interactions Macromolecules. ,vol. 49, pp. 362- 366 ,(2016) , 10.1021/ACS.MACROMOL.5B02106
H. Yoshimitsu, E. Korchagina, A. Kanazawa, S. Kanaoka, F. M. Winnik, S. Aoshima, Shape-switching self-assembly of new diblock copolymers with UCST-type and LCST-type segments in water Polymer Chemistry. ,vol. 7, pp. 2062- 2068 ,(2016) , 10.1039/C5PY01976A
Yuzo Kitazawa, Takeshi Ueki, Lucas D. McIntosh, Saki Tamura, Kazuyuki Niitsuma, Satoru Imaizumi, Timothy P. Lodge, Masayoshi Watanabe, Hierarchical Sol–Gel Transition Induced by Thermosensitive Self-Assembly of an ABC Triblock Polymer in an Ionic Liquid Macromolecules. ,vol. 49, pp. 1414- 1423 ,(2016) , 10.1021/ACS.MACROMOL.5B02616
P. Madhusudhana Reddy, P. Venkatesu, Ionic liquid modifies the lower critical solution temperature (LCST) of poly(N-isopropylacrylamide) in aqueous solution. Journal of Physical Chemistry B. ,vol. 115, pp. 4752- 4757 ,(2011) , 10.1021/JP201826V
Shengtong Sun, Peiyi Wu, On the Thermally Reversible Dynamic Hydration Behavior of Oligo(ethylene glycol) Methacrylate-Based Polymers in Water Macromolecules. ,vol. 46, pp. 236- 246 ,(2013) , 10.1021/MA3022376