• Faculty

    • Faculty Profile

    Dr Umaprasana Ojha

    Chemistry
    Associate Professor

     

    Ph D 2006 Indian Institute of Technology, Bombay
    M Sc 1999 Ravenshaw College, Cuttack
    B Sc 1997 Kendrapara College, Orissa
    2014 – Till Date Associate Professor, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi
    2010 – 2013 Assistant Professor, Rajiv Gandhi Institute of Petroleum Technology, Jais, Amethi
    2006 – 2010 Post-Doctoral Fellow, University of Massachusetts, Lowell
    • Hydrogels
    • Sustainable materials
    • Catalysis
    • Nanocomposites
    • Stiff plastic material possessing autonomous selfhealing ability Ojha, Umaprasana; Kumar, Anuj Indian Pat. Appl. (2017), IN 2015DE03230 A 20170414.
    • Polyacryloyl hydrazide based hydrogels Ojha, Umaprasana; Kumar, Anuj Indian Pat. Appl. (2016), IN 2015DE00819 A 20160930.
    • A process for the preparation of polyacryloyl hydrazide stabilized metal nanoparticles Ojha, Umaprasana; Ujjwal, Rewati Raman; Kumar, Anuj Indian Pat. Appl. (2016), IN 2015DE00367 A 20160831.
    • Faust, R.; Ojha, U. Polyisobutylene based polyurethanes US Pat. Appl. Publ. 2013, 20130079487.
    • Faust, R.; Tripathy, R.; Ojha, U. Functional polyisobutylene based macromonomers and methods for making the same PCT. Int. Appl. 2010, WO 2010111280 A1 20100930.
    • Faust, R.; Ojha, U. Polyisobutylene based polyurethanes and the method for making and using them. PCT. Int. Appl. 2010, WO 2010081132 A1 20100715
    • Boden, M.; Schwarz, M. C.; Strickler, F. H.; Faust, R.; Ojha, U.; Higashihara, T. Copolymers having polyisobutylene and biodegradable polymer segments U.S. Pat. Appl. Publ. 2010, US 2010166820 A1 20100701.
    • Schwarz, M.; Faust, R.; Ojha, U.; Boden, M.; Strickler, F. Modified polymers and methods for making and using the same PCT Int. Appl. 2009, WO 2009006538.
    • Faust, R. Ojha, U. Functional hydrocarbon polymers and process for producing same PCT Int. Appl. 2008, WO 2008060333.
    • Kumar, A.; Santra, S.; Ojha, U. P.; Sreelekha, P. G.; Jasmine. N-alkylation of amino acids and its applications in polymer syntheses. Indian Pat. Appl. 2008, 2006MU00775.
    • Kumar, A.; Santra, S.; Ojha, U. P.; Sreelekha, P. G.; Jasmine. Malonic acid based monomers and polymers. Indian Pat. Appl. 2007, 2006MU00664.
    • Polyacryloyl hydrazide incorporation into ionic hydrogels improves toughness, elasticity, self-healability, adhesive & strain sensing properties Mandal, Subhankar; Pandey, Niharika; Singh, Somendra; Ranjan, Amit; Ojha, Umaprasana Materials Chemistry Frontiers (2019), 3(4), 690-701.
    • Enhancing the stability and redispersibility of o/w Pickering emulsion through polyacryloyl hydrazide-tannic acid synergy Narukulla, Ramesh; Ojha, Umaprasana; Sharma, Tushar From Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2019), 568, 204-215
    • Shale inhibition by low-molecular-weight cationic polymer in water-based mud Beg, Mukarram; Singh, Priyanka; Sharma, Shivanjali; Ojha, Umaprasana From Journal of Petroleum Exploration and Production Technology (2019), 9(3), 1995-2007
    • Self-Healable and Recyclable Dynamic Covalent Networks Based on Room Temperature Exchangeable Hydrazide Michael Adduct Linkages Debnath, Suman; Ujjwal, Rewati Raman; Ojha, Umaprasana From Macromolecules (Washington, DC, United States) (2018), 51(23), 9961-9973
    • Effect of cationic copolyelectrolyte additives on drilling fluids for shales Beg, Mukarram; Sharma, Shivanjali; Ojha, Umaprasana From Journal of Petroleum Science & Engineering (2018), 161, 506-514.
    • Ionization-Induced Reversible Aggregation of Self-Assembled Polycarbonyl Hydrazide Nanoparticles: A Potential Candidate for Turn-On Base Sensor and pH-Switchable Materials
    • By Ujjwal, Rewati Raman; Panda, Debashis; Singh, Anand Pratap; Kumar, Anuj; Ojha, Umaprasana; Kishore, Kumar From ACS Applied Nano Materials (2018), 1(1), 82-93
    • Dye-Labeled Polyacryloyl Hydrazide-Ag Nanoparticle Fluorescent Probe for Ultrasensitive and Selective Detection of Au Ion
    • By Ujjwal, Rewati Raman; Sona, Chandan; Debnath, Suman; Yadav, Prem Narayan; Ojha, Umaprasana From ACS Omega (2017), 2(8), 4278-4286.
    • Stable & re-dispersible polyacryloyl hydrazide-Ag nanocomposite Pickering emulsions
    • By Narukulla, Ramesh; Ojha, Umaprasana; Sharma, Tushar From Soft Matter (2017), 13(36), 6118-6128
    • Rheological investigation of a random copolymer of polyacrylamide and polyacryloyl hydrazide (PAM-?ran-?PAH) for oil recovery applications Raman Ujjwal, Rewati; Sharma, Tushar; Sangwai, Jitendra S.; Ojha, Umaprasana Journal of Applied Polymer Science (2017), 134(13), n/a. 
    • Effect of cationic copolyelectrolyte additives on drilling fluids for shales Beg, Mukarram; Sharma, Shivanjali; Ojha, Umaprasana From Journal of Petroleum Science & Engineering (2018), 161, 506-514.
    • Ionization-?Induced Reversible Aggregation of Self-?Assembled Polycarbonyl Hydrazide Nanoparticles: A Potential Candidate for Turn-?On Base Sensor and pH-?Switchable Materials
    • Ujjwal, Rewati Raman; Panda, Debashis; Singh, Anand Pratap; Kumar, Anuj; Ojha, Umaprasana; Kishore, Kumar ACS Applied Nano Materials (2018), 1(1), 82-93.
    • Dye-?Labeled Polyacryloyl Hydrazide-?Ag Nanoparticle Fluorescent Probe for Ultrasensitive and Selective Detection of Au Ion Ujjwal, Rewati Raman; Sona, Chandan; Debnath, Suman; Yadav, Prem Narayan; Ojha, Umaprasana ACS Omega (2017), 2(8), 4278-4286.
    • Stable & re-?dispersible polyacryloyl hydrazide-?Ag nanocomposite Pickering emulsions Narukulla, Ramesh; Ojha, Umaprasana; Sharma, Tushar Soft Matter (2017), 13(36), 6118-6128.
    • Recyclable Thermosets Based on Dynamic Amidation and Aza-?Michael Addition Chemistry Baruah, Ranjana; Kumar, Anuj; Ujjwal, Rewati Raman; Kedia, Soumya; Ranjan, Amit; Ojha, Umaprasana Macromolecules (Washington, DC, United States) (2016), 49(20), 7814-7824.
    • Kumar, A.; Samal, S.; Dash, R.; Ojha, U. Polyacryloyl Hydrazide Based Injectable, Stimuli Responsive & Biocompatible Hydrogels with Tunable Properties ACS Applied Materials & Interfaces (2015), 7(21), 11497-11507.
    • Polymeric drug carriers through covalent attachment and encapsulation for controlled delivery purposes Kumar, Anuj; Raman, Ujjwal Rewati; Ojha, Umaprasana International Journal of Plastics Technology (2014), 18(3), 333-336.
    • Kumar, A.; Ujjwal, R. R.; Mittal, A.; Bansal, A.; Ojha, U. Polyacryloyl Hydrazide: An Efficient, Simple and Cost Effective Precursor to a Range of Functional Materials through Hydrazide Based Click Reactions ACS Appl. Mater. Interface, 2014, 6, 1855-1865.
    • Kulkarni, P.; Ojha, U.; Faust, R.; and Desai, S. Thermal and Mechanical Properties of Polyisobutylenebased Thermoplastic Polyurethanes J. Appl.Polym. Sci. 2013, 130, 891-897.
    • Garle, A.; Kong, S.; Ojha, U.; Budhlall, B. Thermoresponsive Semicrystalline Poly(ε-caprolactone) Networks: Exploiting Cross-linking with Cinnamoyl Moieties to Design Polymers with Tunable Shape Memory. ACS Appl. Mater. Interface, 2012, 4, 645-657.
    • Cozzens, D.; Luk, A.; Ojha, U.; Ruths, M.; Faust, R. Surface Characterization and Protein Interactions of Segmented Polyisobutylene-Based Thermoplastic Polyurethanes, Langmuir, 2011, 27, 14160-14168.
    • Tripathy, R.; Ojha, U.; Faust, R. Polyisobutylene modified bisphenol A diglycidylether based flexible and transparent epoxy resins possessing improved mechanical properties, Macromolecules, 2011, 44, 6800-6809.
    • Ojha, U.; Kulkarni, P.; Cozzens, D.; Faust, R. Hydrolytic degradation studies of Polyisobutylene and Poly(L-lactide) based multiblock copolymers. J Polym Sci Part A: Polym Chem. 2010, 48, 3767-3674.
    • Cozzes, D.; Ojha, U.; Kulkarni, P.; Faust, R. Long term in vitro biostability of segmented polyisobutylene-based thermoplastic polyurethanes. J Biomed mater Res Part A 2010, 95A, 774-782.  
    • Ojha, U.; Faust, R. “Synthesis and characterization of biostable thermoplastic polyurethaneurea elastomers based on polyisobutylene macrodiamines” J. Macromol. Sci. Part A. Pure Appl. Chem. 2010, 47, 186-191.
    • Anandakathir, R.; Ojha, U.; Ada, E. T.; Faust, R.; Kumar, J. “Stilbene-based fluorescent sensor for detection of organophosphorus warfare nerve agents” J. Macromol. Sci. Part A. Pure Appl. Chem. 2009, 46, 1217-1222.
    • Ojha, U.; Kulkarni, P.; Faust, R. “Synthesis and characterization of novel biostable thermoplastic polyurethane elastomers based on polyisobutylene macrodiols” Polymer 2009, 50, 3448-3457.
    • Tripathy, R.; Ojha, U.; Faust, R. “Syntheses and characterization of polyisobutylene based macromonomers with methacrylate, glycidyl-ether, acrylate or vinyl-ether end-functionality” Macromolecules 2009, 42, 3958-3964.
    • Ojha, U.; Kulkarni, P.; Faust, R. “Syntheses and characterization of novel multiblock copolymers consisting of polyisobutylene and poly(L-lactide) segments” J. Polym. Sci. Part A: Polym Chem. 2009, 47, 3490-3505.
    • Ojha, U.; Feng, D.; Chandekar, A.; Whitten, J. E.; Faust, R. “Peptide surface modification of p(hydroxyethyl methacrylate-co-methyl methacrylate)-b-isobutylene-b-p(hydroxyethyl methacrylate-co-methyl methacrylate) block copolymers” Langmuir 2009, 25, 6319-6327.
    • Ojha, U., Rajkhowa, R.; Rao, S. A.; Faust, R. “A novel approach to synthesis of different end-functionalized polyisobutylenes using nucleophilic substitution reactions” Macromolecules 2008, 41, 3832-3841.
    • Ojha, U., P.; Kumar, A. “Design, synthesis and characterization of main chain aromatic polyesters based on 3,4-ethylenedioxythiophene” J. Polym. Sci. Part A: Polym Chem. 2006, 44, 3479-3486.
    • Ojha, U., P.; Ramesh, C.; Kumar, A. “Design, synthesis and characterization of polyureas based on 3,4-ethylenedioxythiophene” J. Polym. Sci. Part A: Polym. Chem. 2005, 43, 5823-5830.
    • Ojha, U., P.; Krishnamoorthy, K.; Kumar. A. “Synthesis and characterization of polyoxadiazoles based on 3,4-alkylenedioxythiophene” Synth. Met. 2003, 132, 279-283.
    • Jha, N.; Kumar, A.; Mathur, A.; and Ojha, U. Analysis of CO2 Swelling and Modeling of PVT Properties of Reservoir fluid of Cambay Basin 2014.
    • Cozzens, D.; Ojha, U.; Ruths, M.; Faust, R. Biocompatibility of novel polyisobutylene-based thermoplastic polyurethanes Polym. Preprints 2010, 51, 626-627.
    • Kulkarni, P.; Ojha, U.; Cozzens, D.; Faust, R. Hydrolytic degradation of polyisobutylene and poly-lactide based multiblock copolymers Polym. Preprints 2010, 51, 5-6.
    • Tripathy, R.; Ojha, U.; Faust, R. Syntheses and characterization of polyisobutylene based macromonomers with methacrylate, glycidyl-ether, acrylate or vinyl-ether end-functionality. Polym. Preprints 2009 (In Press).
    • Garle, A.; Ojha, U.; Budhlall, B. Combination of ROP and RAFT synthesis of a novel biodegradable, stimuli responsive poly[caprolactone-ran-cinnamoyl modified caprolactone]-b-PNIPAm-b-poly[caprolactone-ran-cinnamoyl modified caprolactone] triblock copolymer. PMSE Preprints 2009,101, 1221-1222.
    • Ojha, U.; Faust, R. Synthesis, characterization and properties of biostable thermoplastic polyurethanes based on polyisobutylene and poly(tetramethylene oxide) segments. PMSE Preprints 2009, 101, 1228-1229.
    • Ojha, U.; Kulkarni, P.; Faust, R. Design and synthesis of biodegradable multiblock copolymers based on polyisobutylene and poly-L-lactide segments. PMSE Preprints 2009. 101, 1200-1201.
    • Ojha, U.; Feng, D.; Chandekar, A.; Whitten, J. E.; Faust, R. Peptide surface modification of poly(hydroxyethyl methacrylate-co-methyl methacrylate)-b-isobutylene-b-poly(hydroxyethyl methacrylate-co-methyl methacrylate) block copolymers to enhance endothelialization. PMSE Preprints 2007, 97, 28-30.
    • Higashihara, T.; Ojha, U.; Faust, R.; Strickler, F. Grafting of poly(dimethylsiloxane) onto poly(styrene-block-isobutylene-block-styrene). Polym. Preprints 2007, 48, 1037-1038.
    • Ojha, U.; Faust, R. Synthesis and characterization of end-functionalized polyisobutylenes for Sharpless-type click reactions. Polym. Preprints 2007, 48, 786-787.
    • Kumar, A.; Contractor, A. Q.; Ambade, A. V.; Ranganathan, T.; Krishnamoorthy, K.; Mishra, S. P.; Ojha, U. P.; Santra, S.; Kanungo, M. Novel approaches for novel materials Int. J. Plast. Technol. 2003, 6, 73-76.
    • Best Teacher award for the academic year 2010-2011 Rajiv Gandhi Institute of Petroleum Technology, Raebareli
    • Senior Research Fellowship (SRF) sponsored by CSIR, India: 2003.
    • Adani award (best teaching assistantship) for the academic session 2001-2002 by Indian Institute Technology Bombay.
    • Junior Research Fellowship (JRF) sponsored by CSIR, India: 2001.
    • Awarded teaching assistantship by Indian Institute of Technology, Mumbai in year 2000.
    • Qualified JRF-NET (CSIR-UGC: 2000). 
    • Qualified GATE with 91.6 percentile (149 rank): 1999.
    • R. K. Nanda award (first prize on seminar presentation: 1999 by Ravenshaw University,
    ;