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Synthesis and characterization of thermostable hyperbranched epoxy resin for surface coating applications

Published online by Cambridge University Press:  28 March 2012

Buddhadeb Roy  and
Niranjan Karak
Buddhadeb Roy
Affiliation:
Advanced Polymer and Nanomaterial Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur-784028, Assam, India
Niranjan Karak*
Affiliation:
Advanced Polymer and Nanomaterial Laboratory, Department of Chemical Sciences, Tezpur University, Tezpur-784028, Assam, India
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A hyperbranched epoxy resin has been synthesized by using epichlorohydrin, bisphenol-A, and hyperbranched polyether polyol by a low-temperature polycondensation technique in the presence of a base. The reaction parameters of this polycondensation reaction were optimized, and 5 N aqueous sodium hydroxide solution, (54 ± 1) °C reaction temperature and 3 h reaction time were found to be the best. The degree of branching of the resin was found to be 0.57 as determined from 13C nuclear magnetic resonance spectroscopy (Fig. 3). This hyperbranched epoxy resin was cured with poly(amido amine) hardener at 120 °C for a specified period of time. The resin exhibits very good crosscut adhesive strength (100%). The cured films showed moderate impact strength (60 cm), good scratch resistance (5.5 kg), good gloss (82 at 60°), thermostability up to 270 °C, and good chemical resistance in various chemical media. All these results indicate its suitability to be used as an advanced surface coating material.

Keywords

Chemical synthesisCoatingThermogravimetric analysis
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 14 , 28 July 2012 , pp. 1806 - 1814
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

1.Kim, Y.H.: Hyperbranched polymers 10 years after. J Polym. Sci. Part A: Polym. Chem. 36, 1685 (1998).3.0.CO;2-R>CrossRefGoogle Scholar
2.Voit, B.: New developments in hyperbranched polymers. J Polym. Sci. Part A: Polym. Chem. 38, 2505 (2000).3.0.CO;2-8>CrossRefGoogle Scholar
3.Voit, B.: Hyperbranched polymers: A chance and a challenge. C.R. Chim. 6, 821 (2003).CrossRefGoogle Scholar
4.Gao, C. and Yan, D.: Hyperbranched polymers: From synthesis to applications. Prog. Polym. Sci. 29, 183 (2004).CrossRefGoogle Scholar
5.Mahapatra, S.S. and Karak, N.: Hyperbranched polyamine: A promising curing agent for a vegetable oil-based poly(ester-amide) resin. Prog. Org. Coat. 60, 328 (2007).CrossRefGoogle Scholar
6.Selvaraj, M., Maruthan, K., Palraj, S., and Venkatachari, G.: Preparation and characterization of thermally stable epoxy-titanate coatings. Prog. Org. Coat. 67, 339 (2010).CrossRefGoogle Scholar
7.Gaier, R.J, Hardebeck, W.C., Terry Bunch, J.R., Davidson, M.L., and Beery, D.B.: Effect of intercalation in graphite epoxy composites on the shielding of high energy radiation. J. Mater. Res. 13, 2297 (1998).CrossRefGoogle Scholar
8.Possart, G., Presser, M., Passlack, S., Geiß, P.L., Kopnarski, M., Brodyanski, A., and Steinmann, P.: Micro-macro characterisation of DGEBA-based epoxies as a preliminary to polymer interphase modelling. Int. J. Adhes. Adhes. 29, 478 (2009).CrossRefGoogle Scholar
9.Fu, J-F., Shi, L-Y., Yuan, S., Zhong, Q-D., Zhang, D-S., Chen, Y., and Wu, J.: Morphology, toughness mechanism, and thermal properties of hyperbranched epoxy modified diglycidyl ether of bisphenol A (DGEBA) interpenetrating polymer networks. Polym. Adv. Technol. 19, 1597 (2008).CrossRefGoogle Scholar
10.Bouer, R.S.: Epoxy Resin Chemistry (Am. Chem. Soc. Symp. Series no. 114, Washington DC, 1979).Google Scholar
11.Mustata, ˘.F. and Bicu, I.: Multifunctional epoxy resins: Synthesis and characterization. J. Appl. Polym. Sci. 77, 2430 (2000).3.0.CO;2-P>CrossRefGoogle Scholar
12.Chen-Yang, Y.W., Wang, W.S., Tang, J.C., Wu, Y.W., and Chen, H.S.: Novel flame retardant epoxy/clay nanocomposites prepared with a pre-ground phosphorus containing organoclay. J. Mater. Res. 23, 1618 (2008).CrossRefGoogle Scholar
13.Zhang, D. and Jia, D.: Synthesis of novel low-viscosity liquid epoxidized aromatic hyperbranched polymers. Eur. Polym. J. 42, 711 (2006).CrossRefGoogle Scholar
14.Das, G. and Karak, N.: Thermostable and flame retardant Mesua ferrea L. seed oil based non-halogenated epoxy resin/clay nanocomposites. Prog. Org. Coat. 69, 495 (2010).CrossRefGoogle Scholar
15.Das, G. and Karak, N.: Mesua ferrea L. seed oil-based epoxy resins. J. Appl. Polym. Sci. 118, 128 (2010).CrossRefGoogle Scholar
16.Ishida, Y., Yokomachi, K., Seino, M., Hayakawa, T., and Kakimoto, M.: Synthesis, end-functionalization and characterization of hyperbranched polysiloxysilanes from AB3 type monomer. Macromol. Res. 15, 147 (2007).CrossRefGoogle Scholar
17.Karak, N., Roy, B., and Voit, B.: S-Triazine-based hyperbranched polyethers: Synthesis, characterization, and properties. J. Polym. Sci., Part A: Polym. Chem. 48, 3994 (2010).CrossRefGoogle Scholar
18.Bhuniya, S. and Maiti, S.: Heterocyclic-based epoxy-terminated structural adhesive. II. Curing, adhesive strength, and thermal stability. J. Appl. Polym. Sci. 86, 3520 (2002).CrossRefGoogle Scholar
19.Motawie, A.M., Sherif, M.H., Badr, M.M., Amer, A.A., and Shehat, A.S.: Synthesis and characterization of waterborne epoxy resins for coating application. Aust. J. Basic Appl. Sci. 4, 1376 (2010).Google Scholar
20.Zhang, D., Jia, D., and Zhou, Z.: Synthesis and characterization of low viscosity aromatic hyperbranched polyester epoxy resin. Macromol. Res. 17, 289 (2009).CrossRefGoogle Scholar
21.Coessens, V., Pyun, J., Miller, P.J., Gaynor, S.G., and Matyjaszewski, K.: Functionalization of polymers prepared by ATRP using radical addition reactions. Macromol. Rapid Commun. 21, 103 (2000).3.0.CO;2-H>CrossRefGoogle Scholar
22.Gong, C. and Fre’chet, J.M.J.: Proton transfer polymerization in the preparation of hyperbranched polyesters with epoxide chain-ends and internal hydroxyl functionalities. Macromolecules 33, 4997 (2000).CrossRefGoogle Scholar
23.Emrick, T.Chang, H.T., and Fre’chet, J.M.J.: The preparation of hyperbranched aromatic and aliphatic polyether epoxies by chloride-catalyzed proton transfer polymerization from ABn and A2 + B3 monomers. J. Polym. Sci., Part A: Polym. Chem. 38, 4850 (2000).3.0.CO;2-G>CrossRefGoogle Scholar
24.Pascu, O., Garcia-Valls, R., and Giamberini, M.: Interfacial polymerization of an epoxy resin and carboxylic acids for the synthesis of microcapsules. Polym. Int. 57, 995 (2008).CrossRefGoogle Scholar
25.Emrick, T., Chang, H.T., Fréchet, J.M.J., Woods, J., and Baccei, L.: Hyperbranched aromatic epoxides in the design of adhesive materials. Polym. Bull. 45, 1 (2000).CrossRefGoogle Scholar