Ph.D. in IIT Kharagpur.
M.Tech. in IIT Kharagpur.
M.Sc. in IIT Kharagpur.
• Multifaceted polymeric nanocomposites
• Advanced hyperbranched polymers• Biodegradable and sustainable materials
H. Chaudhuri and N. Karak. "Bio-derived water dispersible polyurethane/rGO@α-MnO 2 /rGO@δ-MnO 2 nanocomposite as a heterogeneous catalyst and anticorrosive material"; Colloids and Surfaces A: Physicochemical and Engineering Aspects; 602, 125116, 2020.
A. Saikia, L. Debbarma and N. Karak. "Renewable resource based hyperbranched epoxy thermosetting nanocomposite with cellulose nanofiber as a sustainable material"; Cellulose, 26(8), 4743–4755, 2019.T. Ghosh and N. Karak. "Bio-based multifunctional macroglycol containing smart thermoplastic hyperbranched polyurethane elastomer with intrinsic self-healing attribute"; ACS Sustainable Chem. Eng. 6, 4370–4381, 2018.
S. Gogoi and N. Karak. "Solar driven hydrogen peroxide production using polymer supported carbon dot as heterogeneous catalyst"; Nano-Micro Letters, 9, 40, 2017.D. Hazarika and N. Karak. "Biodegradable tough waterborne hyperbranched polyester/ carbon dot nanocomposite: An approach towards eco-friendly material"; Green Chemistry, 18, 5200 – 5211, 2016.
N. Karak. Bio-derived biodegradable hyperbranched polymeric nanocomposites with multidimensional applications, International Conference on Emerging Trends in Chemical Sciences (ETCS-2020) at Gauhati University, 13-15 February, 2020, India (Invited talk).
N. Karak. Renewable resource based hyperbranched polyurethane nanocomposites as smart materials for multifaceted applications, International conference on Advances In Polymer Science and Rubber Technology, September 24-27, 2019, IIT Kharagpur, India (Invited talk).N. Karak. Sustainable thermoplastic and thermosetting polymeric nanocomposites, International Conference on Polymer Science and Technology (SPSI-MACRO 2018), IISER, Pune, 18-20th December 2018, (Invited talk).
N. Karak. “Biobased Smart Polyurethane Nanocomposites: From Synthesis to Applications”, The Royal Society of Chemistry, Cambridge, UK, ISBN: 978-1-78801-180-8, 2017.
N. Karak. “Experimental Methods on Polymers, Nanomaterials and Their Nanocomposites”, Nova Science Publishers, New York, USA, ISBN: 978-1-63484-358-4, 2016.N. Karak. “Vegetable oil based polymers: Processing, Properties and Applications”, Woodhead Publishing House Limited, UK, ISBN 978-0-85709-710-1 (print), ISBN 978-0-85709-714-9, 2012 (online).
• Development of water-borne hyperbranched polyesters and polyurethanes from bio-based resources and their nanocomposites sponsored by CSIR; Total cost: 17.56 lakhs; Duration: 2017-2020.
• Investigation on structure-property relationship for self-healing smart hyperbranched polyurethane nanocomposite with antistatic and antimicrobial attributes sponsored by DST; Total cost: 29.93 lakhs; Duration: 2017-2020.• Polymer supported green silver nano particles: using plants of northeast India; studies on toxicity and anti-cancer property (Collaborative work with Visa Bharati University, Santiniketan sponsored by DBT; Total: 58.81 lakh; Duration: 2014-2017.
• N. Karak and B. Be. A tough synthetic low dielectric hyperbranched epoxy thermoset and a process for preparing thereof, Indian Patent, Patent No. 312661 on 13/05/2019 (application No. 786/KOL/2013 of 28.06.2013).
• The Fellow of Royal Society of Chemistry (by RSC, UK), 2018 (No. 652504).
• Regular member of American Chemical Society (Gifted by ACS, USA for 1 year), 2018 (No. 30764416).• Visitor’s award in research category (among all the central Universities) by The President of India, 2017.
• Recognized as the most highly prolific author for ACS Sustainable Chemistry & Engineering (in Asian countries and 4thout of 5 in world), by ACS 2016.• Chemical Research Society of India (CRSI) Bronze medal by CRSI 2016.
• 4th Dr. S. S. Deshpande National Award by Holkar Government (Model, autonomous) Science College-Indore, 2015.• 9th Polymer Foundation Award by PSM Polymer Foundation, 2014.