Dr. Paramita Ray

Designation: Sr. Principal Scientist
Phone No:
2567760
Phone Ext. No: 7600
E-Mail: parmita[at]csmcri.res.in

Research Activities


Preparation , modification and studies of transport phenomena of pressure and potential driven membranes


Expertise


Polymer blends , Interpenetrating polymer networks, Telechelic polymers, Polymeric membranes


 

Selected publications:

  1. Studies on Polybutadiene Ruber-Polystyrene Interpenetrating Polymer Network, P. Ghosh & P.Ray; Journal of Material Science, 26 (1991) 6104-6112.
  2. Crosslinking in blends of networks based on Nitrile Rubber (NBR) & Poly (Vinyl Chloride) (PVC); P. Ghosh, A.K. Sen, & P. Ray, Polymer, 33 (1992) 744-754.
  3. Electroassisted transport phenomenon of strong and weak electrolytes across ion-exchange membranes; Chronopotentiometric study on the deactivation of ion-exchange membranes by higher homologous mono carboxylates, G. Ramachandriah and P. Ray, J. Phys. Chem. B, 101 (40), (1997), 7892-7900.
  4. Transport phenomenon as a function of counter and co-ions in solution: Chronopotentiometric behaviour of anion exchange membrane in different electrolyte solution; P. Ray, V.K. Sahi, T.V. Pathak and G. Ramachandriah; J. Memb. Sci. 160 (1999) 243-254.
  5. Studies on heterogeneous cation exchange membranes; Punita V.Vyas, B. G. Shah, G.S.Trivedi, P. Ray, S. K. Adhikary and R. Rangarajan; Reactive and Functional Polymers 44(2000) 101.
  6. Characterization of heterogeneous anion exchange membrane; Punita V.Vyas, B. G. Shah, G.S.Trivedi, P. Ray, S. K. Adhikary and R. Rangarajan; J. Membr.Sci. 187 (2001) 39-46.
  7. Studies on exchange equilibria of cations between cation exchange membranes and electrolytic solutions; P.V. Vyas, P. Ray, G.S. Trivedi, S.K. Adhikary and R. Rangarajan; The Journal of Colloid &Interface Science; 246(2002) 366.
  8. Electrical Conductance Of Heterogeneous Cation-exchange Membranes In Electrolyte Solution; Punita V. Vyas, P. Ray, R. Rangarajan and S.K.Adhikary; The Journal of Physical Chemistry B, 106(2002) 11910-11915
  9. Effect of variation of blend ratio on heterogeneity and permselectivity of ion exchange membranes; P.V. Vyas, P. Ray, S.K. Adhikary, B.G.Shah and R. Rangarajan; The Journal of Colloid &Interface Science, 257(2003) 127-134.
  10. Studies on the resistance developed at different stages in an electrodialysis stack operated in parallel cum series flow pattern; S.K.Adhikary, J. M. Gohil and P. Ray, J. Memb. Sci., 245(2004) 131-136.
  11. Studies on the surface tension of Poly (vinyl alcohol): effect of concentration, temperature and addition of chaotropic agent; A. Bhattacharya and P. Ray, J. Appl. Polym. Sci. 93(2004)122-130.
  12. A. Bhattacharya, P.Ray, H. Brahmbhatt, K.M.Vyas, S.V.Joshi, C.V. Devmurari and J.J.Trivedi, Study in pesticides removal performance by low pressure Reverse osmosis membranes, J. Appl. Polym. Sci,102 (2006)3575-3579.
  13. V. Balaji, S.K.Adhikary and P.Ray, Studies on the electrical diffusivities of mono-carboxylates through heterogeneous anion exchange membranes , J. Appl. Polym. Sci. 106(2007)2615-2624.
  14. J.M.Gohil and P.Ray, Polyvinyl alcohol as the barrier layer in thin film composite nanofiltration membranes: preparation, characterization and performance evaluation, The Journal of Colloid &Interface Science 338 (2009) 121-127.

Book Chapters:

1. Interpenetrating Polymer Networks based on Polybutadiene Rubber-Polystyrene and Polychloroprene Rubber-Polystyrene – a comparative study; P. Ghosh and P. Ray, Polymer Science Contemporary Themes edited by S. Sivram, Tata Graw Hill Publication Vol. II, pp. 871.

2. Desalination through electrodialysis: New explorations; P.Ray, Desalination Research Progress, edited by D.J.Elgado and P.Moreno, NOVA publications.

3. Introduction, A. Bhattacharya and P.Ray in Polymer Grafting and Crosslinking, Edited by A. Bhattacharya, J.W.Rawlins and P.Ray, John Wiley and sons, Hoboken, New Jersey,2009, pp 1-5

4.Basic Features and Techniques, A. Bhattacharya and P.Ray in Polymer Grafting and Crosslinking, Edited by A. Bhattacharya, J.W.Rawlins and P.Ray, John Wiley and sons, Hoboken, New Jersey,2009, pp 7-64.

5. Analytical Evidence, A. Bhattacharya and P.Ray in Polymer grafting and Crosslinking, Edited by A. Bhattacharya, J.W.Rawlins and P.Ray, John Wiley and sons, Hoboken, New Jersey,2009, pp 93-124.

6. Broader Spectrum :Examples, I.Kaur and P.Ray in Polymer grafting and Crosslinking, Edited by A. Bhattacharya, J.W.Rawlins and P.Ray, John Wiley and sons, Hoboken, New Jersey,2009, pp 125-143.

Books edited

One of the editors of the book "Polymer Grafting and Crosslinking", John-Wiley and sons, Hoboken, New Jersey, 2009.

Patents:

1.An eco-friendly process for the electrolytic synthesis of methyl sulfoxide from methyl sulfide using an ion exchange membrane cell; P. Ray, V. K. Sahi, G. Ramachandriah and R. Rangarajan ; Indian Patent Application No. 1506/DEL/ 1998.Indian patent no. 232919

2.Facile synthesis of ammonia from inorganic nitrates and nitrites in enriched waters and effluents by an ion exchange membrane cell; R. Prakash, V. K. Shahi, P. Ray, G. Ramachandraiah and R. Rangarajan; Indian Patent Application no. 042/DEL/2001. Indian patent no. 230375

3. A process for the preparation of heterogeneous ion exchange spacers; G.S.Trivedi, P.Ray, B.G.shah, S.K. Adhikary, R, Rangarajan andP.K.Ghosh; Indian Patent Application No. 0472/DEL/2003. Indian patent no. 236262