Bio-based, hyperbranched polymer synthesis, fabrication of polymer nanocomposites and blends, polymer processing (melt extrusion, compression molding, etc.), nanomaterial/nanohybrid synthesis for advanced applications such as biomedical, coating, smart applications, photocatalysis, environmental remediation, etc.

• Bio-based biodegradable polymer synthesis.
• Hyperbranched polymer synthesis.
• Carbon-based, organic, inorganic and hybrid nanomaterial synthesis.
• Polymer and biopolymer processing.
• Polymer nanocomposite fabrication.
• Bioplastic development for packaging technology.
• Polymer design for advanced applications (coating, adhesives, biomaterials, photocatalyst, etc.
• Smart polymer development for Intelligent material design and application
• Catalytic polymer nanocomposite development for environmental remediation
• Utilization of North Eastern region resources to produce value added products.
• Development of polymeric biomaterials for medical devices.

• Postdoctoral Reseacher at Trinity College Dublin, (2020-2023), Ireland.
• Oxford University Online Certification course on Intellectual Property, Research Integrity as a part of ‘Epegium Research Integrity Training’ completed (August 2020), Oxford University Press, University of Oxford, UK.
• Research Associate at Materials Sciences and Technology Division, CSIR NEIST, (November 2019-February 2020).

• UK Patent: 01 (UK Patent Application No. 2211716.2)
• Indian Patent: 01 (Application No. 202211044093)

Total No. of Publications: 14; First author: 12; h-index: 10; i10-index: 10
Average impact factor: 6; Highest impact factor: 15.1
(source: Google Scholar, data retrieved on 12.01.2024)

• Duarah, R., Aleksic, I., Milivojevic, D., Rameshkumar, S., Nikodinovic‐Runic, J., & Padamati, R. B. (2023). Development of nystatin‐based antifungal, biodegradable polymer composite materials for food packaging via melt processing approach. Journal of Applied Polymer Science, 140(45), e54663.(Impact Factor: 3.0)
• Duarah, R., & Karak, N. (2019). Hyperbranched polyurethane/reduced carbon dot-zinc oxide nanocomposite-mediated solar-assisted photocatalytic degradation of organic contaminant: An approach towards environmental remediation. Chemical Engineering Journal, 370, 716-728.(Impact Factor: 15.1)
• Duarah, R., Singh, Y. P., Gupta, P., Mandal, B. B., & Karak, N. (2016). High performance bio-based hyperbranched polyurethane/carbon dot-silver nanocomposite: a rapid self-expandable stent. Biofabrication, 8(4), 045013.(Impact Factor: 11.06)
• Das, M. R., Hussain, N., Duarah, R., Sharma, N., Sarmah, P., Thakur, A., ... & Boukherroub, R. (2022). Metal nanoparticles decorated two-dimensional nanosheets as heterogeneous catalysts for coupling reactions. Catalysis Reviews, 1-73.(Impact Factor: 13.6)
• Devi, M., Das, P., Boruah, P. K., Deka, M. J., Duarah, R., Gogoi, A., ... & Das, M. R. (2021). Fluorescent graphitic carbon nitride and graphene oxide quantum dots as efficient nanozymes: Colorimetric detection of fluoride ion in water by graphitic carbon nitride quantum dots. Journal of Environmental Chemical Engineering, 9(1), 104803.(Impact Factor: 7.7 )
• Duarah, R., Deka, A., & Karak, N. (2020). Multifaceted bioinspired hyperbranched polyurethane nanocomposite as a non-contact triggered self-healing material. Express Polymer Letters, 14(6), 542-555.(Impact Factor: 3.952)
• Duarah, R., & Karak, N. (2019). Hyperbranched polyurethane/palladium-reduced carbon dot nanocomposite: an efficient and reusable mesoporous catalyst for visible-light-driven C–C coupling reactions. Industrial & Engineering Chemistry Research, 58(36), 16307-16319.(Impact Factor: 4.326)
• Duarah, R., Singh, Y. P., Gupta, P., Mandal, B. B., & Karak, N. (2018). Smart self-tightening surgical suture from a tough bio-based hyperbranched polyurethane/reduced carbon dot nanocomposite. Biomedical Materials, 13(4), 045004.(Impact Factor: 4) [Also published as a newsletter titled ‘A self-tightening suture’ in Physics World, IOP Publishing]
• Duarah, R., & Karak, N. (2018). High performing smart hyperbranched polyurethane nanocomposites with efficient self-healing, self-cleaning and photocatalytic attributes. New Journal of Chemistry, 42(3), 2167-2179.(Impact Factor: 3.925)
• Duarah, R., & Karak, N. (2017). Facile and ultrafast green approach to synthesize biobased luminescent reduced carbon nanodot: an efficient photocatalyst. ACS Sustainable Chemistry & Engineering, 5(10), 9454-9466.(Impact Factor: 8.4)
• Baruah, P., Duarah, R., & Karak, N. (2016). Tannic acid-based tough hyperbranched epoxy thermoset as an advanced environmentally sustainable high-performing material. Iranian Polymer Journal, 25, 849-861.(Impact Factor: 3.1)
• Duarah, R., Singh, Y. P., Mandal, B. B., & Karak, N. (2016). Sustainable starch modified polyol based tough, biocompatible, hyperbranched polyurethane with a shape memory attribute. New Journal of Chemistry, 40(6), 5152-5163.(Impact Factor: 3.3)
• Duarah, R., & Karak, N. (2015). A starch based sustainable tough hyperbranched epoxy thermoset. RSC Advances, 5(79), 64456-64465.(Impact Factor: 4.0)
• Gogoi, S. R., Saikia, G., Ahmed, K., Duarah, R., & Islam, N. S. (2017). Niobium (V) peroxo α-amino acid complexes: Synthesis, stability and kinetics of inhibition of acid phosphatase activity. Polyhedron, 121, 142-154.(Impact Factor: 2.6)

   

• Duarah, R., Das, P., Boruah, P. K., & Das, M. R. (2022). Current Perspective on the Development of 2D Nanosheets and their Composites for Photocatalytic Degradation of Organic Pollutants. Heterogeneous Nanocatalysis for Energy and Environmental Sustainability, 2, 95-115.
• Duarah, R., Hazarika, D., Saikia, A., Bayan, R., Ghosh, T., & Karak, N. (2019). Sustainable Polymeric Nanocomposites for Multifaceted Advanced Applications. Advances in Sustainable Polymers: Processing and Applications, 363-395.

• Nominated for BiOrbic Researcher of the year 2021, BiOrbic, Bioeconomy SFI Research Centre, Trinity College Dublin, Ireland.
• Postdoctoral Fellowship (2020-2023) under BiOrbic, Bioeconomy SFI Research Centre funded by Science Foundation Ireland, Ireland.
• Best Poster Award in Characterization of starch modified hyperbranched carbon based polyurethane nanocomposites as smart materials, 1st International Conference on Sophisticated Instruments in Modern Research, IIT Guwahati, Guwahati, India, 30th June-1st July 2017.
• Best Presenter Award in Sustainable-resource-based tough hyperbranched polyurethane nanocomposites with different carbon-based metal nanohybrids: Perspective as multifunctional smart materials, Fourth International Symposium on Advances in Sustainable Polymers (ASP 2017), IIT Guwahati, Assam, 8th-11th January, 2018.

• R. Duarah and R. Padamati, Bioplastics for a circular economy: challenges and opportunities, Bioeconomy Research Symposium: Ireland, 2022 (BRSI 2022), University College Dublin, Dublin, Ireland. 6th - 7th December 2022.
• Attending the K – The World´s No.1 Trade Fair for Plastics and Rubber, Düsseldort, Germany.
• R. Duarah, I. Aleksic, J. Nikodinovic and R. Padamati, Bio-based, biodegradable nystatin based-polylactic acid/polycaprolactone composites: prospective antifungal packaging material for a sustainable environment, BiOrbic,Bioeconomy SFI Research Centre Research Day 2022, University College Dublin, Dublin, Ireland.
• R. Duarah and N. Karak, Bio-based hyperbranched epoxy modified hyperbranched polyurethane thermoset, 27th Materials Research Society of India (MRSI) Symposium on Advanced Materials for Sustainable Applications, CSIR-NEIST, Jorhat, 18-21 February, 2016.
• R. Duarah and N. Karak, Prospective rapid self-expandable stent from carbon dot-silver modified high performing hyperbranched nanocomposites, 20th CRSI National Symposium, Gauhati University, Guwahati, 3-5 February, 2017.
• R. Duarah and N. Karak, Characterization of starch modified hyperbranched carbon based polyurethane nanocomposites as smart materials, 1st International Conference on Sophisticated Instruments in Modern Research, IIT Guwahati, Guwahati, India, 30 June-1 July, 2017.
• R. Duarah and N. Karak, Sustainable resource based tough hyperbranched polyurethane/carbon dot-Ag nanocomposite: a prospective rapid self-expandable stent, International Conference on Advances in Polymer Science & Technology, New Delhi, India, 23-25 November, 2017.
• R. Duarah and N. Karak, Sustainable-resource-based tough hyperbranched polyurethane nanocomposites with different carbon based metal nanohybrids: Perspective as multifunctional smart materials, Fourth International Symposium on Advances in Sustainable Polymers (ASP 2017), IIT Guwahati, Assam, 8-11 January, 2018.
• R. Duarah and N. Karak, Starch modified hyperbranched polyurethane nanocomposites with diverse carbon-based nanomaterials: as prospective multifaceted smart materials, OrganiX-2018: An International Conference in Chemistry, Tezpur University, Assam, 20-21 December, 2018.