Journal Publications
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.
Patents
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.
