Dr. Praveen Kumar Sappidi

National Post-Doc Fellow

Education / Work History

  • National Post-Doc Fellow, September 2017 - Present.
  • Senior Project Engineer (Post-doc), January - August, 2017.
  • Ph.D., IIT Madras, 2011-17
  • M.Tech., IIT Kharagpur, 2009-11
  • B.Tech., Bapatla Engineering College, Bapatla, 2005-09

Research Topic / Interest

  • Atomistic molecular dynamics
  • Structure and dynamics of polymers
  • Polymer-solvent interactions
  • Molecular simulation of soft matter

Current Research Work

Understanding the adsorption of the metal ion from aqueous/organic solvent in presence of ligand-coated soft materials using molecular simulations. The effect of ligand grafting on soft material for the removal of metal ions from aqueous phase. The properties such as adsorption, diffusion and binding free-energy will be estimated.

Publications

  1. P. Sappidi, M. S. Sulatha, U. Natarajan. Conformations and hydration structure of hydrophobic polyelectrolyte atactic poly (ethacrylic acid) in dilute aqueous solution as a function of neutralisation. Molecular Simula- tion 2014, 40 (4), 295-305.
  2. P. Sappidi, U. Natarajan. Influence of hydrogen bonding on the structural transition of poly (methacrylic acid) chain in water–ethanol solution by molecular dynamics simulations. Molecular Simulation 2015, 41(18), 1476- 1487.
  3. P. Sappidi, U. Natarajan. Polyelectrolyte conformational transition in aqueous solvent mixture influenced by hydrophobic interactions and hydro- gen bonding effects: PAA–water–ethanol. Journal of Molecular Graphics and Modelling 2016, 64, 60-74.
  4. P. Sappidi, U. Natarajan. Effect of salt valency and concentration on structure and thermodynamic behavior of anionic polyelectrolyte Na+ - Polyethacrylate aqueous solution. Journal of Molecular Modeling 2016, 22,274.
  5. P. Sappidi, U. Natarajan. Factors responsible for the self-association of hydrophobic polyelectrolyte poly(ethacrylic acid) PEA in aqueous solu- tion revealed by molecular dynamics simulations. Journal of Molecular Graphics and Modelling 2017, 75, 306-315.

Conferences

  1. P. Sappidi, M. S. Sulatha, U. Natarajan. Structural properties of poly(ethacrylic acid) in dilute aqueous solution investigated by molecular dynamics simulations. Third International Multicomponent Polymer Conference (IMPC): Kottayam, Kerala, India 23-25 March (2012).
  2. P. Sappidi, U. Natarajan. Conformations, hydrogen-bonding structure and dynamics of hydrophobic polyelectrolyte poly(ethacrylic acid) in dilute aqueous solution investigated by molecular dynamics simulations”. 4th International Conference on Electroactive Polymers (ICEP-2012), Varanasi, Nov. 4th-9th (2012).
  3. P. Sappidi, U. Natarajan. Structure of Polymethacrylic acid (PMA) chain in water-ethanol mixed solvent system investigated by molecular dynamics simulations. 3rd FAPS Polymer congress and MACRO 2013, IISc Banga- lore, India 15-18 May (2013).
  4. P. Sappidi, U. Natarajan. MD Simulation Study of Polyelectrolyte chain collapse in aqueous mixed solvent due to hydrophobicity: PAA-water- ethanol. AICHE Annual Meeting, San Francisco, CA, USA, November 3-8 (2013).
  5. P. Sappidi, U. Natarajan. Swelling and collapse behavior of poly(acrylic acid) in water-ethanol mixed solvent system investigated by molecular dynamics simulations. 5ThAsian Conference on Colloid and Interface Sci- ence, Darjeeling, India. November 20-23 (2013).
  6. P. Sappidi, M. S. Sulatha, U. Natarajan. Structural properties of poly(ethacrylic acid) in dilute aqueous solution investigated by molecular dynamics simulations. Third International Multicomponent Polymer Conference (IMPC): Kottayam, Kerala, India 23-25 March (2012).
  7. P. Sappidi, U. Natarajan. Effect of salt valency and concentration on struc- ture and thermodynamics of Na+ - Polyethacrylate in aqueous solution. Macro-2015 International Symposium on Polymer Science and Technol- ogy, Indian Association for Cultivation of Science, Kolkata, India. 23-26 Jan (2015).
  8. P. Sappidi, U. Natarajan. Molecular dynamics simulations of confor- mational transitions of atactic-poly(acrylic acid) chain in water-ethanol mixed solvents. European Polymer Congress, Dresden, Germany, June 21 - 26 (2015).
  9. P. Sappidi, U. Natarajan. Molecular dynamics simulations of structure and thermodynamics of Na+ - Polyethacrylate in aqueous solution: Effect of salt valency and concentration. European Polymer Congress, Dresden, Germany, June 21 - 26 (2015).