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Journal of Polymer Research

, Volume 18, Issue 5, pp 897–905 | Cite as

Modified acrylic-based superabsorbents with hydrophobic monomers: synthesis, characterization and swelling behaviors

  • Xingli Liu
  • Xiaolan Li
  • Zhiyong Lu
  • Xinping Miao
  • Yujun FengEmail author
Original Paper

Abstract

A novel family of acrylic acid-based superabsorbent polymers (SAP-n) with controlled-absorption rate were synthesized via aqueous solution polymerization using K2S2O8/NaHSO3 as the redox initiators, N, N'-methylenebisacrylamide (NMBA) as the crosslinker, 2-methacryloyloxyethyl n-alkyl dimethyl ammonium bromide (CnDM, n = 4, 8, 12, 16) as the hydrophobic comonomers. The structures of the copolymers were elucidated by FT-IR and ionic chromatographic (IC) analysis respectively, and the swelling properties of the copolymers were examined. It was found that the water absorbency capacity either in distilled water or in 0.9% NaCl brine decreased with increasing hydrophobe length or content, and the water absorbency rate of SAP-n was as expected lower than that of SAP without hydrophobic monomer; in addition, water retention evaluation under different temperatures revealed that this kind of copolymers could absorb and retain large amount of water at room temperature and release it at high temperature.

Keywords

Acrylic-based superabsorbents Hydrophobic monomer Swelling behaviors Controlled-absorption 

Notes

Acknowledgement

X. Liu gratefully acknowledges the financial support from the key project in natural sciences (09NZD002) of Southwest University for Nationalities, and Y. Feng thanks the financial supports from Sichuan Provincial Bureau of Science and Technology through its Distinguished Youth Fund (2010JQ0029) and application-oriented fundamental research program of (2008JY0002), as well as the opening fund from Sate Key Laboratory of Oil/Gas Reservoir Geology and Exploitation Engineering (PLN0605).

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Xingli Liu
    • 1
  • Xiaolan Li
    • 2
    • 3
  • Zhiyong Lu
    • 2
  • Xinping Miao
    • 1
  • Yujun Feng
    • 2
    Email author
  1. 1.College of Chemistry and Environmental Protection EngineeringSouthwest University for NationalitiesChengduPeople’s Republic of China
  2. 2.Chengdu Institute of Organic ChemistryChinese Academy of SciencesChengduPeople’s Republic of China
  3. 3.The Graduate School of the Chinese Academy of SciencesBeijingPeople’s Republic of China

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