International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Synthesis, Characterization and Thermal studies on natural Polymers modified with 2-(5-(4-dimethylamino-benzylidin)-4-oxo-2-thioxo-thiazolidin-3-yl) acetic acid

Author Affiliations

  • 1Research and Post Graduate Department of Chemistry, St. Thomas College, Pala-686574, Mahatma Gandhi University, Kerala, INDIA
  • 2Research and Post Graduate Department of Chemistry, St. George College, Aruvithura-686122, Mahatma Gandhi University, Kerala, INDIA

Res.J.chem.sci., Volume 2, Issue (12), Pages 37-45, December,18 (2012)


In the present work, 2-(5-(4-dimethylamino-benzylidin)-4-oxo-2-thioxo-thiazolidin-3-yl)acetic acid, a chromophoric system with push-pull electron modulation was synthesized and incorporated onto biopolymers such as lignin, starch and cellulose through esterification by DCC Coupling. The products were characterized by UV-visible, fluorescence, FT-IR and NMR spectroscopic methods. The unmodified natural polymers and the coupled products were subjected to thermal analysis by TG-DTA studies. The results of the studies show that incorporation of the chromophoric system onto the polymeric core enhanced the thermal stability of the chromophoric system and core materials. The thermal data obtained were analysed and compared.


  1. http//crop.scijournals. org/cgi/content (2012)
  2. Boudet A.M., A New View of Lignifications, Trends in Plant Science, 67-71(1998)
  3. El-Wakil N.A., Use of lignin strengthenedwith modifiedwheat gluten in biodegradablecomposites, J. Appl. Polym. Sci.,113 (2), 793801 (2009)
  4. Klumpers J. Scalbert A. and Janin G., Ellagitannins in European Oak Wood: Polymerization during Wood Ageing, Phytochemistry,36, 1249-1252 (1994)
  5. Chang L.J., Reactive Blending of Biodegradable Polymers: PLA and Starch, . Polym. Environ., 8, 33 (2000)
  6. Adler E., Wood Sci. Technol., 14241 (1980)
  7. Chakar F.S. and Ragauska A.J., Ind. Crops Prod, 20,131 (2004)
  8. Jiang J., Greenwood B., Phillips J. and Becker E., Appita. 45(1) 19 (1992)
  9. Justin Shey, Kevin M., Rosalind Y., Wong Kay S., Gregorski A., Artur P., Klamczynski J. and William J., The azidation of starch, Carbohydrate Polymers 65, 529534 (2006)
  10. Forssell A., Hamunen K., Autio K. and Poutanen, Starch/starke., 47, 371 (1995)
  11. Kohler S. and Heinze T., Cellulose, 14, 489, (2007)
  12. Hasani M.M. and Westman G., New Coupling Reagents for Homogeneous Esterification of Cellulose, Cellulose, 13, 347356 (2007)
  13. Hussain M.A., Liebert T. and Heinze T., First Report on a New Esterification Method for Cellulose, Polym News, 29(1), 1417 (2004)
  14. Ciacco G.T., Liebert T., Frollini E. and Heinze T., Application of the solvent dimethylsulfoxide/tetra butylammonium fluoride trihydrate as reaction medium for the homogeneous acylation of sisalcellulose, Cellulose, 10, 125132 (2003)
  15. Hasani M.M. and Westman G., New coupling reagents for homogeneous esterification of cellulose, Cellulose, 13, 347356 (2007)
  16. Hussain M.A., Liebert T. and Heinze T., First report on a new esterification method for cellulose, Polym News,29(1), 1417 (2004)
  17. William Kemp, Organic Spectroscopy, Macmillan, (1975)
  18. John R. Dyer, Applications of Absorption Spectroscopy of Organic Compounds, Phi Learning, (2009)
  19. Kadla J.F., Satoshi K., Gilbert R.D. and Venditti R.A., Lignin-based carbon fibers, Chemical properties and Usage of Lignin, 121-137 (2002)
  20. Ralph J., Lundquist K., Brunow G., Lu F., Kim H., Schatz P.F., Marita J.M., Hatfield R.D., Ralph S.A., Christensen J.H. and Boerjan W., Lignins: natural polymers from oxidative coupling of 4-hydroxy phenyl propanoids, Phytochem. Rev., 29-60 (2004)
  21. Ambily Chandran, Sunny Kuriakose and Tessymol Mathew, Preparation, Characterisation and Light Fastening Studies of Biopolymer Modified 2-(5-(4-dimethylamino-benzylidin)-4-oxo-2-thioxo-thiazolidin-3-yl)