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Synthesis and characterization of thermo-responsive supramolecular diblock copolymers

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Abstract

In this paper, we report the synthesis and characterization of a new thermo-responsive supramolecular amphiphiles diblock copolymer, methoxy poly (ethylene glycol)-block-Poly(N-isopropylacrylamide) (mPEG-b-PNIPAM). The mPEG with β-cyclodextrin (β-CD) group and the PNIPAM with adamantine (AD) group were synthesized, respectively, and mPEG-b-PNIPAM was then obtained by the host-guest inclusion between AD and β-CD. The structure and molecular weight of mPEG-b-PNIPAM was confirmed by 1H NMR and GPC measurements. At low temperature (T < 33 °C), the PNIPAM block is hydrophilic. With increasing temperature, the hydrophobicity the of PNIPAM block increases. This molecular feature leads to interesting aggregation behavior of micelles in aqueous solutions at different temperatures. The self-assembly was revealed by UV, DLS measurements, and TEM observations.

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Acknowledgments

The authors are grateful for financial support from the CNOOC Research Center, State Key Laboratory of Offshore Oil Exploitation (CCL2013RCPS0243GNN).

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Authors and Affiliations

  1. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People’s Republic of China

    Hong Wang, Hao Yan & Chengzhong Wang

  2. Technology Research Dept. CNOOC Research Center, State Key Laboratory of Offshore Oil Exploitation, Beijing, 100027, China

    Hong Wang, Yuejun Zhu, Wenjuan Chen & Jian Zhang

Authors
  1. Hong Wang
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  2. Hao Yan
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  3. Yuejun Zhu
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  4. Wenjuan Chen
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  5. Jian Zhang
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  6. Chengzhong Wang
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Correspondence to Hong Wang or Chengzhong Wang.

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Wang, H., Yan, H., Zhu, Y. et al. Synthesis and characterization of thermo-responsive supramolecular diblock copolymers. J Polym Res 23, 73 (2016). https://doi.org/10.1007/s10965-016-0949-x

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  • DOI: https://doi.org/10.1007/s10965-016-0949-x

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