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Designing, characterization, and thermal behavior of triazine-based dendrimers

  • Dhaval G. Gajjar , Rinkesh M. Patel , Hema N. Patel and Pravinkumar M. Patel EMAIL logo
Published/Copyright: September 17, 2014
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 35 Issue 1

Abstract

Different generations of dendritic architecture with piperazine in core moiety and hydroxyl groups on the periphery were designed by divergent method. 1,4-biz(4,6-trichloro-1,3,5-triazin-2-yl)piperazine was synthesized as a core for dendrimer synthesis. Dendrimer was then grown to G3 from core compound using diethanolamine and cyanuric chloride as branching units. Dendrimer generations were characterized by infrared (IR) spectroscopy [Fourier transform IR (FTIR)], 1H-nuclear magnetic resonance (NMR), 13C-NMR, electrospray ionization-mass spectrometry (ESI-MS), and elemental analysis. The thermal behavior of both full- and half-generation dendrimers was investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The TGA study revealed that dendrimer generations had a moderate thermal stability. Chlorine-terminated half-generation dendrimers were thermally more stable than hydroxyl-terminated full-generation dendrimers. The DSC technique was employed to determine the glass transition temperatures (Tg) of dendrimer generations. It was observed that the glass transition temperatures of synthesized dendrimer generations were of low value, which is similar to the values reported for the polyamidoamine (PAMAM) dendrimer of the same generation. It was also observed that, with the increase in the molecular weight or generation number of dendrimer, the glass transition temperature was also increased.

Keywords: dendrimer; glass transition temperature; thermogravimetric analysis; triazine trichloride
Corresponding author: Pravinkumar M. Patel, Industrial Chemistry Department, V.P. & R.P.T.P. Science College (affiliated to Sardar Patel University), Vallabh Vidhyanagar 388120, Gujarat, India, e-mail:

Acknowledgments

The authors are grateful to The Principal, V.P. & R.P.T.P. Science College, for providing laboratory facility. The authors are also grateful to U.G.C. New Delhi for funding this research work. The authors acknowledge the Sophisticated Analytical Instrumentation Facility (SAIF), Punjab University, Chandigarh, the Sophisticated Instrumentation Centre for Advanced Research and Testing (SICART), Vallabh Vidhyanagar, and the Central Salt and Marine Chemicals Research Institute (CSMCRI) providing the instrumentation facilities.

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Supplemental Material

The online version of this article (DOI: 10.1515/polyeng-2014-0123) offers supplementary material, available to authorized users.

Received: 2014-5-6
Accepted: 2014-7-26
Published Online: 2014-9-17
Published in Print: 2015-1-1

©2015 by De Gruyter

Articles in the same Issue

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https://doi.org/10.1515/polyeng-2014-0123
Keywords for this article
dendrimer; glass transition temperature; thermogravimetric analysis; triazine trichloride

Articles in the same Issue

  1. Frontmatter
  2. Review
  3. Oligomers with structural elements of imidazolidinetrione obtained from oxamic acid and oxamide: polyurethane foams modified by structural elements of imidazolidinetrione
  4. Original articles
  5. Group contribution modeling of viscosity during urethane reaction
  6. Peroxide vulcanization of natural rubber. Part II: effect of peroxides and co-agents
  7. Evaluation of long-term stability and degradation on polycarbonate based plastic glass
  8. Designing, characterization, and thermal behavior of triazine-based dendrimers
  9. Processing and characterization of electrospun trans-polyisoprene nanofibers
  10. Effect of electric field on gas-assisted melt differential electrospinning with hollow disc electrode
  11. Physicochemical characteristics of poly(piperazine-amide) TFC nanofiltration membrane prepared at various reaction times and its relation to the performance
  12. Characterization and application of methylcellulose and potato starch blended films in controlled release of urea
  13. The interaction of sodium carboxymethylcellulose with gelatin in the absence and presence of NaCl, CaCl2 and glucose
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