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Journal of Thermal Analysis and Calorimetry

, Volume 107, Issue 1, pp 355–363 | Cite as

Synthesis and thermal analysis of linear triblock copolymers based on methacrylate ester

  • Bo Lin
  • Hongdong Zhang
  • Yuliang Yang
Article

Abstract

Two linear triblock copolymers poly(t-butyl methacrylate-b-2-hydroxyl ethyl methacrylate-b-N,N-dimethylaminoethyl methacrylate) (PtBMA97-b-PHEMA18-b-PDMAEMA98) and poly(t-butyl methacrylate-b-glycidyl methacrylate-b-styrene) (PtBMA137-b-PGMA23-b-PSt156) were controlled synthesized with living RAFT polymerization technique under the chain transfer of cumyl dithiobenzoate. The results of FT-IR spectra illustrate that the characteristic groups of copolymer fit well with the result of 1H-NMR, which successfully determines the corresponding molecular structure of triblock copolymers. The thermal stability of PtBMA-b-PGMA-b-PSt and PtBMA-b-PHEMA-b-PDMAEMA was also complementarily explained by the activation energy of thermal decomposition from Friedman differential method and Ozawa–Flynn–Wall integral method. The results show that the degradation energy of the former copolymer was much higher than that of the latter copolymer, because the aromatic groups were introduced into the polymer segments of the former copolymer during the RAFT polymerization process, and the other reason is the oxirane rings are typically reactive which they occurred intermolecular crosslinking reaction during the thermal decomposition.

Keywords

Methacrylate ester Linear triblock copolymer Thermogravimetry Friedman analysis Ozawa–Flynn–Wall analysis 

Notes

Acknowledgements

This study is a part of projects subsidized by the National Basic Research Program of China (2005CB623800) and the NSFC program (20874019).

References

  1. 1.
    Shen J, Hu Y, Li C, Qin C, Ye M. Synthesis of amphiphilic graphene nanoplatelets. Small. 2009;5:82–5.CrossRefGoogle Scholar
  2. 2.
    Cheng J, He J, Li C, Yang Y. Facile approach to functionalize nanodiamond particles with v-shaped polymer brushes. Chem Mater. 2008;20:4224–30.CrossRefGoogle Scholar
  3. 3.
    Mayya KS, Schoeler B, Caruso F. Preparation and organization of nanoscale polyelectrolyte-coated gold nanoparticles. Adv Funct Mater. 2003;13:183–8.CrossRefGoogle Scholar
  4. 4.
    Zhang M, Liu L, Zhao H, Yang Y, Fu G, He B. Double-responsive polymer brushes on the surface of colloid particles. J Colloid Interface Sci. 2006;301:85–91.CrossRefGoogle Scholar
  5. 5.
    Li D, He Q, Cui Y, Li J. Fabrication of pH-responsive nanocomposites of gold nanoparticles/poly(4-vinylpyridine). Chem Mater. 2007;19:412–7.CrossRefGoogle Scholar
  6. 6.
    Wang D, Duan H, Möhwald H. The water/oil interface: the emerging horizon for self-assembly of nanoparticles. Soft Matter. 2005;1:412–6.CrossRefGoogle Scholar
  7. 7.
    Binder WH. Supramolecular assembly of nanoparticles at liquid–liquid interfaces. Angew Chem Int Ed. 2005;44:5172–5.CrossRefGoogle Scholar
  8. 8.
    Li D, Sheng X, Zhao B. Environmentally responsive “hairy” nanoparticles: mixed homopolymer brushes on silica nanoparticles synthesized by living radical polymerization techniques. J Am Chem Soc. 2005;127:6248–56.CrossRefGoogle Scholar
  9. 9.
    Lin Y, Skaff H, Böker A, Dinsmore AD, Emrick T, Russell TP. Ultrathin cross-linked nanoparticle membranes. J Am Chem Soc. 2003;125:12690–1.CrossRefGoogle Scholar
  10. 10.
    Skaff H, Lin Y, Tangirala R, Breitenkamp K, Böker A, Russell TP, Emrick T. Crosslinked capsules of quantum dots by interfacial assembly and ligand crosslinking. Adv Mater. 2005;17:2082–6.CrossRefGoogle Scholar
  11. 11.
    Chrissafis K. Kinetics of thermal degradation of polymers. J Therm Anal Calorim. 2009;95:273–83.CrossRefGoogle Scholar
  12. 12.
    Lin B, Yang L, Dai H, Hou Q, Zhang L. Thermal analysis of soybean oil based polyols. J Therm Anal Calorim. 2009;95:977–83.CrossRefGoogle Scholar
  13. 13.
    Friedman HL. Kinetics of thermal degradation of char-foaming plastics from thermogravimetry: application to a phenolic resin. J Polym Sci. 1965;6C:183–95.Google Scholar
  14. 14.
    Vlase T, Vlase G, Doca N. Kinetics of thermal decomposition of alkaline phosphates. J Therm Anal Calorim. 2005;80:207–10.CrossRefGoogle Scholar
  15. 15.
    Pratap A, Lilly Shanker Rao T, Lad K, Dhurandhar HD. Isoconversional vs. model fitting methods. J Therm Anal Calorim. 2007;89:399–405.CrossRefGoogle Scholar
  16. 16.
    Vyazovkin S. Model-free kinetics. J Therm Anal Calorim. 2006;83:45–51.CrossRefGoogle Scholar
  17. 17.
    Le TPT, Moad G, Rizzardo E, Thang SH. PCT International Patent Application (Int Pat Appl) WO 9801478 A1 980115, 1998.Google Scholar
  18. 18.
    Starink MJ. On the applicability of isoconversion methods for obtaining the activation energy of reactions within a temperature-dependent equilibrium state. J Mater Sci. 1997;32:6505–12.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  1. 1.Key Laboratory of Molecular Engineering of Polymer, Ministry of Education, and Department of Macromolecular ScienceFudan UniversityShanghaiChina

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