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Synthesis and curing behavior of a novel liquid crystalline epoxy resin

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Abstract

This article described the synthesis and mesomorphic behavior transition of a novel liquid crystalline (LC) epoxy resin 4-(2,3-epoxypropoxy)biphenyl,4″-(2,3-epoxypropoxy)phenyl-4′carboxylate (EBEPC), which combined a hydroxyl benzoic aromatic ester and biphenol rigid-rod group. EBEPC showed a clear nematic schlieren texture under curtain conditions. The reaction kinetics of EBEPC cured by 4,4′-diaminodiphenyl-methane (DDM) was studied by using an isoconversional method under isothermal conditions with differential scanning calorimetry (DSC). The isothermal DSC data can be fitted reasonably by an autocatalytic curing model. Smectic phases had been observed in the EBEPC/DDM curing system. The results of DSC showed that the formation of the LC phase had pronounced influence on the curing reaction.

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References

  1. Zhang BL, Tang GL, Shi KY, You YC, Du ZJ, Yang JF, et al. A study on properties of epoxy resin toughened by functionalized polymer containing rigid, rod-like moiety. Eur Polym J. 2000;36:205–13.

    Article  CAS  Google Scholar 

  2. Liu G, Zhang L, Qu X, Li Y, Gao J, Yang L. A new curing kinetic model and its application to BPSER/DDM epoxy system. J Therm Anal Calorim. 2001;65:837–46.

    Article  CAS  Google Scholar 

  3. Singh D, Narula AK. Studies on the curing and thermal behaviour of diglycidyl ether of bisphenol-A (DGEBA) in the presence of aromatic diimide–diacids. J Therm Anal Calorim. 2010;100:199–205.

    Article  CAS  Google Scholar 

  4. Hikmet RAM, Lub J. Anisotropic networks and gels obtained by photopolymerisation in the liquid crystalline state: synthesis and applications. Prog Polym Sci. 1996;21:1165–209.

    Article  CAS  Google Scholar 

  5. Hong SM, Hwang SS. Anisotropic orientation of the carbon fiber/liquid crystalline epoxy resin composites. Compos Interfaces. 2006;13:145–57.

    Article  CAS  Google Scholar 

  6. Castell P, Serra A, Galià M. Liquid-crystalline thermosets from liquid-crystalline epoxy resins containing bisazomethinebiphenylene mesogens in the central core: copolymerization with a nonmesomorphic epoxy resin. J Polym Sci A. 2004;42:3631–43.

    Article  CAS  Google Scholar 

  7. Lee JY, Jang J, Hong SM, Hwang SS, Kim KU. Relationship between the structure of the bridging group and curing of liquid crystalline epoxy resins. Polym. 1999;40:3197–202.

    Article  CAS  Google Scholar 

  8. Liu GD, Gao JG, Song LL, Hou W, Zhang L. Synthesis and curing of liquid-crystalline epoxy resins containing a biphenyl mesogen. Maromol Chem Phys. 2006;207:2222–31.

    Article  CAS  Google Scholar 

  9. Harada M, Watanabe Y, Tanaka Y, Ochi M. Thermal properties and fracture toughness of a liquid-crystalline epoxy resin cured with an aromatic diamine crosslinker having a mesogenic group. J Polym Sci B 2006;44:2486–94.

    Article  CAS  Google Scholar 

  10. Cai ZQ, Sun JZ, Zhou QY, Xu JL. Synthesis and characterization of a novel liquid-crystalline epoxy resin combining biphenyl and aromatic ester-type mesogenic units. J Polym Sci A. 2007;45:727–35.

    Article  CAS  Google Scholar 

  11. Gao ZY, Yu YF, Xu YZ, Li SJ. Synthesis and characterization of a liquid crystalline epoxy containing azomethine mesogen for modification of epoxy resin. J Appl Polym Sci. 2007;105:1861–8.

    Article  CAS  Google Scholar 

  12. Giamberini M, Amendola E, Carfagna C. Liquid crystalline epoxy thermosets. Mol Cryst Liq Cryst. 1995;266:9–22.

    Article  CAS  Google Scholar 

  13. Sánchez-Cabezudo M, Prolongo MG, Salom C, Masegosa RM. Cure kinetics of epoxy resin and thermoplastic polymer. J Therm Anal Calorim. 2006;86:3699–705.

    Article  Google Scholar 

  14. Ren SP, Lan YX, Zhen YQ, Ling YD, Lu MG. Curing reaction characteristics and phase novolac resins. Thermochim Acta. 2006;440:60–7.

    Article  CAS  Google Scholar 

  15. Gao J, Zhang X, Huo L, Zhao H. Curing reaction of o-cresol-formaldehyde epoxy/LC epoxy(p-PEPB)/anhydride(MeTHPA). J Therm Anal Calorim. 2010;100:225–32.

    Article  CAS  Google Scholar 

  16. Macan J, Brnardic′ I, Ivankovic′ M, Mencer HJ. DSC study of cure kinetics of DGEBA-based epoxy resin with poly(oxypropylene) diamine. J Therm Anal Calorim. 2005;81:369–73.

    Article  CAS  Google Scholar 

  17. Su WFA, Chen KC, Tseng SY. Effects of chemical structure changes on thermal, mechanical, and crystalline properties of rigid rod epoxy resins. J Appl Polym Sci. 2000;78:446–51.

    Article  CAS  Google Scholar 

  18. Zhao P, Ling QD, Wang WZ, Ru J, Li SB, Huang W. Reversible addition-fragmentation chain transfer polymerization of methacrylates containing hole- or electron-transporting groups. J Polym Sci A. 2007;45:242–52.

    Article  CAS  Google Scholar 

  19. Vyazovkin S, Sbirrazzuoli N. Kinetic methods to study isothermal and nonisothermal epoxy-anhydride cure. Maromol Chem Phys. 1999;200:2294–303.

    Article  CAS  Google Scholar 

  20. Mallon JJ, Adams PM. Synthesis and characterization of novel epoxy monomers and liquid crystal thermosets. J Polym Sci A. 1993;31:2249–60.

    Article  CAS  Google Scholar 

  21. Lu MG, Kim SW. Kinetics and thermal characterization of epoxy-amine systems. J Appl Polym Sci. 1999;71:2401–8.

    Article  CAS  Google Scholar 

  22. Lu MG, Shim MJ, Kim SW. Curing reaction and phase change in a liquid crystalline monomer. Maromol Chem Phys. 2001;202:223–30.

    Article  CAS  Google Scholar 

  23. Kamal MR. Thermoset characterization for moldability analysis. Polym Eng Sci. 1974;14:231–9.

    Article  Google Scholar 

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Acknowledgements

The financial support from National Natural Science Foundation of China (No. 50673042) and Doctoral Discipline Foundation of Ministry of Education of China (No. 20070055015) are gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemistry, Nankai University, No. 94, Weijin Road, Tianjin, 300071, China

    Hai-Mei Wang, Yue-Chao Zhang, Li-Rong Zhu, Bao-Long Zhang & Yu-Ying Zhang

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  1. Hai-Mei Wang
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  2. Yue-Chao Zhang
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  3. Li-Rong Zhu
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  5. Yu-Ying Zhang
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Correspondence to Yu-Ying Zhang.

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Wang, HM., Zhang, YC., Zhu, LR. et al. Synthesis and curing behavior of a novel liquid crystalline epoxy resin. J Therm Anal Calorim 103, 1031–1037 (2011). https://doi.org/10.1007/s10973-010-1086-0

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