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Journal of Thermal Analysis and Calorimetry

, Volume 113, Issue 2, pp 633–639 | Cite as

Preparation and properties of copolymer resins based on phenolphthalein benzoxazine–benzoic acid and bisoxazoline

  • Shengfang Li
  • Min Tao
Article

Abstract

The novel phenolphthalein benzoxazine–benzoic acid (PBB) was synthesized. The structure of the monomer was supported by FTIR, 1H-NMR, and elemental analysis. The curing behavior of PBB–bisoxazoline (1,3-PBO) resin was monitored by FTIR and differential scanning calorimetry. It was found that PBB–bisoxazoline resin exhibited two-stage polymerization mechanism. The thermogravimetry showed that PBB–bisoxazoline resin had good heat resistance due to the rigidity of PBB polymer chains and the high cross-linking density of copolymer. Furthermore, it seemed that the reaction between PBB and 1,3-PBO also led to an additional cross-linking, which increased the cross-linking density and delayed the decomposition. The cured resin had low water absorption.

Keywords

Benzoxazine Phenolphthalein Bisoxazoline Heat resistance 

Notes

Acknowledgements

The authors are grateful to the key science research project of Hubei Provincial Department of Education (D20123001) and science research project of Science & Technology Bureau of Huangshi, China (Grant No. 2010A1019-4) for the financial support on this study.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  1. 1.School of Chemical and Material EngineeringHubei Polytechnic UniversityHuangshiPeople’s Republic of China
  2. 2.Hubei Key Laboratory of Mine Environmental Pollution Control and RemediationHubei Polytechnic UniversityHuangshiPeople’s Republic of China

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