Dr. Theresa Uzoma Onuegbu
My Social Links

Dr. Theresa Uzoma Onuegbu

Associate Professor
Nnamdi Azikiwe University, Nigeria

Highest Degree
Ph.D. in Chemistry from Nnamdi Azikiwe University, Anambra, Nigeria

Share this Profile

Area of Interest:

Chemistry
100%
Chemistry
62%
Applied Chemistry
90%
Environmental Chemistry
75%
Polymer Chemistry
55%

Research Publications in Numbers

Books
0
Chapters
0
Articles
0
Abstracts
0

Selected Publications

  1. Theresa, U.O., 2014. Leachingof toxic chemicals from polyethylene terephthalate (PET) bottles into the contents: Health Implications. Chem. Nig. Mag. CSN., 3: 34-38.
  2. Umeobika, U.C., T.U. Onuegbu, I.M. Iloamaeke and I.J. Ekwueme, 2013. Synthsis and evaluation of performance characteristics of rubber seed Oil- modified shortand medium Alkyd Resins. Int. J. Sci. Innovat. Discoveries, India, 3: 86-92.
  3. Onuegbu, T.U., L.E. Ugwu and O. Ogunfeyitimi, 2013. Physico-mechanical properties of flexible polyether foam: Comparative effects of fillers. Chem. Mater. Res., 3: 46-52.
  4. Onuegbu, T.U., L.E. Ugwu and O. Ogunfeyitimi, 2013. Effect of fillers on the density, rising time, creaming time, ignition time, flame duration and thermal conductivity of flexible polyether foam. Int. J. Scient. Eng. Res., 4: 1691-1700.
  5. Onuegbu, T.U., E.T. Umoh, D.C. Anike and P.E. Imosili, 2013. Effects of actylation treatments on Physic-mechanical and morphological properties of raffia palm fibre. Nig. J. Mat. Sci. Eng., 4: 84-93.
  6. Onuegbu, T.U., E.T. Umoh and U.A. Onuigbo, 2013. Eupatorium odoratum as Eco-friendly green corrosion inhibitor of mild steel in sulphuric acid. Int. J. Sci. Technol. Res., 2: 4-8.
  7. Onuegbu, T.U., E.T. Umoh and N.C. Okoroh, 2013. Tensile behaviour and hardness of coconut Fibre-ortho unsaturated polyester composites. Global J. Sci. Frontier Res., 13: 1-6.
  8. Onuegbu, T.U., E.T. Umoh and I.T. Onwuekwe, 2013. Physico-chemical analysis of effluents from jacbon chemical industries limited, makers of bonalux emulsion and gloss paints. Int. J. Sci. Technol., 2: 169-173.
  9. Onuegbu, T.U., E.T. Umoh and C.N. Ehiedu, 2013. Emilia sonchifolia extract as green corrosion inhibitor for mild steel in acid medium using weight loss method. J. Nat. Sci. Res., 3: 52-55.
  10. Jephtha, O., O.T. Uzoma, I.I. Ikelle, O.E. Ude and A. Chukwuma, 2013. The thermal characterization of onyeama coal and rice husk briquettes produced using bitumen as a binder. J. Phys. Sci. Environ. Safety, 2: 38-45.
  11. Jephtha, O., O.T. Uzoma, I.I. Ikelle, C. Onuoha and A. Chukwuma, 2013. Production and analysis of the heating properties of coal and rice husk briquettes using CaSO4 as a binder. J. Phsical Sci. Innovat., 5: 35-44.
  12. Iloamaeke, I.M., T.U. Onuegbu, U.C. Umeobika and N.L. Umedum, 2013. Green approach to corrosion inhibition of mild steel using emilia sonchifolia and vitex doniana in 2.5MHCl medium. Int. J. Sci. Modern Eng., 1: 48-52.
  13. Iloamaeke, I.M., T.U. Onuegbu, U.C. Umeobika and C.T. Onyema, 2013. A comparative study of Vitex doniana and Pterocarpus soyauxi as corrosion inhibitors of Mild steel in HCl medium. J. Atoms Mol., 3: 509-519.
  14. Uzoma, O.T., I.I. Maryjane, U.E. Thompson, A.V.I. Egbulefu and U.N. Lilian, 2012. Ethanol extract of vitex doniana as a green corrosion inhibitor for mild steel in hydrochloric acid medium. J. Chem. Chem. Eng., 6: 708-714.
  15. Theresa, U.O., 2012. Briquette: The green energy alternaive for domestic cooking in rural Nigeria: A review. Chem. Technol. Renewable Resour., 2: 3-49.
  16. Onugebu, T.U., I.M. Ogbu and C. Ejikeme, 2012. Comparative analyses of densities and Calorific value as of wood and Briquettes samples prepared at moderate pressure and ambient temperature. Int. J. Plant Anim. Environ. Sci., 1: 40-45.
    Direct Link  |  
  17. Onuegbu, T.U., N.O. Ilochi, I.M. Ogbu, F.O. Obumselu and I. Okafor, 2012. Preparation of environmentally friendly Bio-coal briquette from ground nut shell and maize cob biomass waste: Comparative effect of ignition time and water boiling studies. Curr. Res. Chem., 4: 110-118.
  18. Onuegbu, T.U., A.N. Eboatu, I.E. Iwuchukwu, U.E. Ekpunobi and A.U. Okeke, 2012. Comparative effects of the fire behaviours of potassium aluminium sulphate and potassium sesquicarbonate on flexible polyether foam. Mol. Crystals Liquid Crystals, 556: 89-93.
    CrossRef  |  
  19. Onuegbu, T.U., 2012. A study on the effect of coconut and palm kernel shells on density, porosity index and tensile properties of flexible polyether foam. ARPN J. Sci. Technol., 2: 529-532.
    Direct Link  |  
  20. Jane, I.I.M., O.T. Uzoma, A.V. Egbulefu and U. Ugochukwu, 2012. Corrosion inhibition behaviour of emilia sonchifilia leaves extract as a green corrosion inhibitor for mild steel in hydrochloric acid medium. Int. J. Basic Applied Chem. Sci., 2: 48-58.
  21. Iloamaeke, I.M., T.U. Onuegbu, V.I.E. Ajiwe and U.C. Umeobika, 2012. Corrosion inhibition of mild steel by Pterocarpus soyauxi leaves extract in Hcl medium. Int. J. Plant Anim. Environ. Sci., 2: 22-28.
    Direct Link  |  
  22. Ekpunobi, U.E., A.N. Eboatu, P.A.C. Okoye and T.U. Onuegbu, 2012. Mechanical studies on the particle boards produced from nipa palm fibre and mitres of HDPE wastes. Int. J. Chem., 25: 69-75.
  23. Ekpunobi, U.E., A.N. Eboatu, P.A. Okoye and T.U. Onuegbu, 2012. Mild extraction technique for flavonoids from leaves of Nypa fruiticans and chemical analysis of its components. J. Chem. Chem. Eng., 6: 101-108.
  24. Ekpunobi, U.E. and T.U. Onuegbu, 2012. Thermal degradation effect on the proximate analysis of Nipa palm fibre. Acad. Sci. Int. J. Chem. Res., 3: 1-2.
  25. Onuegbu, T.U., U.E. Ekpunobi, I.M. Ogbu, M.O. Ekeoma and F.O. Obumselu, 2011. Comparative studies of ignition time and water boiling test of coal and biomass briquettes blend. Int. J. Res. Rev. Applied Sci., 7: 153-159.
    Direct Link  |  
  26. Onuegbu, T.U., E.T. Umoh and I.E. Iwuchukwu, 2011. Flame retardant effects on flexible polyurethane foam treated with potassium aluminum sulphate. ARPN J. Sci. Technol., 2: 1097-1102.
    Direct Link  |  
  27. Onuegbu, T.U., C.M. Ejikeme and J.N. Obi, 2011. The effects of animal bones on the tensile strength, elongation-at-break and hardness of flexible polyether foam. Int. J. Chem. India, 21: 129-134.
  28. Onuegbu, T.U., 2011. Plastic blood, a substitute for transfused blood. Natl. Mag. Chem. Soc. Nig., 3: 22-25.
  29. Onuegbu, T.U., A.S. Ogbuagu and M.O. Ekeoma, 2011. The role of catalysts in green synthesis of chemicals for sustainable future. J. Basic Phys. Res., 2: 86-92.
  30. Onuegbu, T.U. and V.N. Ejimofor, 2011. Flame retardant effects of potassium aluminium sulphate (Alum) on kraft sheet. Int. J. Basic Applied Chem. Sci., 1: 94-98.
  31. Onuegbu, T.U. and U.E. Ekpunobi, 2011. Flame retardant effects on flexible polyurethane foam treated with halogenated paraffin, academic sciences. Int. J. Chem. Res. Acad. Sci., 2: 1-3.
  32. Okoye, A.C., I.J. Dioha, F.C. Ezeonu, A.N. Eboatu and T.U. Onuegbu, 2011. Enegry crisis and attendant poverty and environmental problems: The role of renewable Energy. Nig. J. Solar Energy, 22: 138-143.
  33. Ogbu, I.M., T.U. Onuegbu, V.I.E. Ajiwe and C.T. Onyema, 2011. The current status of biofuel development: A review. J. Chem. Soc. Nig. Anachem, 5: 989-997.
  34. Obumselu, F.O., I.O. Okerulu, V.I. Onwukeme, T.U. Onuegbu and R.C. Eze, 2011. Phytochemical and antibacterial analysis of the leaf extract of Ricinus communis. J. Basic Phys. Res., 2: 68-72.
  35. Dioha, I.J., O. Olugbemi, T.U. Onuegbu and Z. Shahru, 2011. Determination of ascorbic acid content of some tropical fruits by iodometric titration. Int. J. Biol. Chem. Sci., 5: 2180-2184.
  36. Onuegbu, T.U., N. Obianuko, G.U. Mbachu and I.M. Iloamaeke, 2010. The effect of animal waste (Goat Femur) as filler in flexible polyether foam. J. Basic Phys. Res., 1: 5-9.
  37. Onuegbu, T.U., J.N. Obi and C. Ejikeme, 2010. The effects of palm kernel shell powder as filler in flexible polyether foam. Int. J. Phys. Sci. Ghana, 2: 126-129.
  38. Onuegbu, T.U., I.O.C. Ekejiuba, U.E. Ekpunobi, C. Ejikeme and J.N. Obi et al., 2010. Comparative studies on density, hardness and porosity index effects of flexible polyether foam filled cow and chicken bone. Int. J. Chem. India, 20: 254-263.
  39. Onuegbu, T.U., I.O.C. Ekejiuba, A.U.G. Okeke and N.O. Anekwe, 2010. The effects of powdered Irvengia gabonensis shell as in flexible polyether foam. Int. J. Chem., 20: 127-130.
  40. Onuegbu, T.U., I.M. Ogbu, N.O. Ilochi, U.E. Ekpunobi and A.S. Ogbuagu, 2010. Enhancing the properties of coal briquette using spear grass (Imperata cylindrica), Leonardo. Leonardo J. Sci., 17: 47-58.
  41. Onuegbu, T.U., I. Okafor, N.O. Ilochi, I.M. Ogbu, O.F. Obumselu and U.E. Ekpunobi, 2010. Enhancing the efficiency of coal briquette in rural Nigeria using Pennisetum purpurem. Adv. Nat. Applied Sci., 4: 299-304.
  42. Onuegbu, T.U., C. Ejikeme, J.N. Obi and I.O.C Ekejiuba, 2010. The use of chicken bone powder as filler in flexible polyether foam. J. Ultra Sci. Phys. Sci. India, 22: 613-618.
    Direct Link  |  
  43. Onuegbu, T.U., A.U.G. Okeke and U.E. Ekpunobi, 2010. Studies on the effects of doping on the electrical and thermal conductivities of polystyrene. Pac. J. Sci. Technol., 11: 446-449.
    Direct Link  |  
  44. Onuegbu, T.U., 2010. Improving fuel wood efficiency in rural Nigeria: A case for briquette technology, chemistry in Nigeria. Magazine CSN., 3: 35-49.
  45. Enemo, R.E., U.E. Ekpunobi, D. Nnubia and T.U. Onuegbu, 2010. Comparative study on the ascorbic acid content of some common Nigeria vegetables (solanum gilo, Gnetum africanium, gongomera latifolum and veronica amygalina). Pac. J. Sci. Technol., 11: 499-503.
    Direct Link  |  
  46. Onuegbu, T.U., I.O.C. Ekejiuba, P.N. Ekemezie and C.C. Ogbonna, 2009. The use of natural proteineous material as filler in flexible polyether foam. J. Chem. Soc. Nig., 34: 193-197.
    Direct Link  |  
  47. Onuegbu, T.U. and P.N. Ekemezie, 2009. An overview of green chemistry, an effective pollution prevention, chemistry in Nigeria. Magazine CSN, 3: 23-27.
  48. Onuegbu, T.U., R.U. Arinze, P.A.C. Okoye and N.C. Anaka, 2008. Phytochemical screening and mineral determination of mucuna flagellipies. J. Applied Sci., 11: 7926-7930.
  49. Onuegbu, T.U., P.N. Ekemezie and N.C. Okoro, 2008. Effects of filler on production of flexible polyether foam. J. Chem. Soc. Nig. Anachem, 2: 262-267.
  50. Onuegbu, T.U., P.N. Ekemezie and F. Ukor, 2008. Phytochemical analysis and antibacterial screening of the root of Olax subscorpioidea. J. Chem. Soc. Nig. Anachem, 3: 421-424.
  51. Onuegbu, T.U., L.O. Okoye, I.J. Dioha, P.A.C. Okoye and P.M. Nwako, 2008. Treated effluents and sludge samples: A case study of Nigerian guinness brewery. J. Chem. Soc. Nig., 33: 6-9.
  52. Onuegbu, T.U., A.N. Eboatu, R.U. Arinze and P.N. Ekemezie, 2008. Further studies on polystyrene-polyisoproprene rubber blend. J. Chem. Soc. Nig. Anachem, 3: 393-399.
  53. Onuegbu, T.U., A.N. Eboatu, I.O.C. Ekejiuba, I.J. Dioha and R.U. Arinze et al., 2008. Extinguisghing novelty of hydrocarbon fires. J. Chem. Soc. Nig., 33: 25-30.
  54. Onuegbu, T.U., A.N. Eboatu, I.O.C. Ekejiuba and P.M. Nwako, 2008. Local raw material feed for fire extinguishers. J. Sci. Eng.Tech., 15: 8064-8073.
  55. Onuegbu, T.U. and P.N. Ekemezie, 2008. Review of chemical industry for economic development. J. Chem. Soc. Nig. Anachem, 2: 227-233.
  56. Ajiwe, V.I.E., T.U. Onuegbu, F.N. Egbo and S.I. Okonkwo, 2008. The preliminary study on the pharmaceutical constituents of ficus exasparata. J. Chem. Soc. Nig. Anachem, 3: 537-542.
  57. Ajiwe, V.I.E., T.U. Onuegbu and P.U. Ofora, 2008. Pharmaceutical constituents of Crateva adansonii leaf (Ogwu Oku). J. Chem. Soc. Nig. Anachem, 3: 476-480.
  58. Onuegbu, T.U., V.I.E. Ajiwe, R.U. Arinze and L.O. Okoye, 2007. Analysis of untreated effluents from guinness brewery in Nigeria. J. Applied Sci., 10: 7466-7473.
  59. Onuegbu, T.U., O. Ogunfeyitimi and V.I.E. Ajiwe, 2007. Local raw material as filler in flexible polyether foam. J. Chem. Soc. Nig. Anachem, 1: 1-7.
  60. Onuegbu, T.U., A.N. Eboatu and I.J. Dioha, 2007. Reducing fire risks in recycled low density polyethylene. J. Chem. Soc. Nig. Anachem, 1: 58-63.
  61. Onuegbu, T.U., 2007. Thermomechanical properties of recycled low density polyethylene. (Sachet Water Bag). J. Sci. Eng. Technol., 14: 7906-7912.
  62. Onuegbu, T.U., 2007. The use of polymeric materials as substitutes for living tissues, chemistry in Nigeria. Margazine CSN., 3: 12-14.
  63. Arinze, R.U., A.N. Eboatu, I.J. Dioha, T.U. Onuegbu and B.U. Iwendi, 2007. Contamination of foodstuffs sold in nigerian markets by some toxic heavy metals. J. Chem. Soc. Nig. Anachem, 1: 33-35.
  64. Ajiwe, V.I.E., T.U. Onuegbu and M.C. Ozumba, 2007. Manufacture and analysis of co-polymerized rigid polyurethane foam products. J. Sci. Eng. Tech., 14: 7298-7310.
  65. Ajiwe, V.I.E., T.U. Onuegbu and C.S. Ubani, 2007. Proximate analysis of spondias mombin seed and characterization of its oil. J. Applied Sci., 10: 6986-6993.
  66. Ajiwe, V.I.E., T.U. Onuegbu and C.M. Obi, 2007. Coupling of phthalocyanine pigment with sulfanilic acid dye and their applications. Afr. J. Sci., 8: 1671-1680.
  67. Ajiwe, V.I.E., A.M. Ofojekwu, T.U. Onuegbu and S.I. Okonkwo, 2007. The preliminary study on the pharmaceutical constituents of Desmodium velutinum leaf (Wild D.C.). J. Chem. Soc. Nig. Anachem, 1: 192-197.
  68. Ajiwe, V.I.E, T.U. Onuegbu and P.U. Ofora, 2007. The pharmaceutical constituents of acalypha torta (Croto Flowers). J. Chem. Soc. Nig. Anachem., 1: 143-147.
  69. Onuegbu, T.U., R.U. Arinze and N.C. Ejimaka, 2006. Reducing fire risks in industrial paints. Afr. J. Sci., 7: 1495-1502.
  70. Onuegbu, T.U., A.N. Eboatu, I.J. Dioha and R.U. Arinze, 2006. Thermomechanical properties of recycled low density polyethylene. Proceedings of the (Sachet Water Bag) 29th Annual International Conference Airpot Hotel, September 26-30, 2006, Ikeja Lagos -.
  71. Dioha, I.J., A.N. Eboatu, R.U. Arinze, P.A.C. Okoye and T.U. Onuegbu et al., 2006. Biogas production from mixture of poultry droppings and cow dung. Nig J. Solar Energy, Solar Energy Soc. Nig., 16: 1-4.
  72. Dioha, I.J., A.M. Birnin Kebbi, U.S. Tunga and T.U. Onuegbu, 2005. Biogas production from rice husk and the physiochemical analysis of the digested and undigested slurries. Bull. San, 26: 401-405.
  73. Arinze, R.U., T.U. Onuegbu, P.A.C. Okoye and O.C. Egbonu, 2005. Analysis of sachet water from seven different brands sold in Nigeria Market. Afr. J. Sci., 6: 1288-1296.
  74. Arinze, R.U., I.J. Dioha, O.P.A.C. Eboatu, T.U. Onuegbu and A.N. Eboatu, 2005. Comparative studies of cumulative yields of biogas from different organic wastes. Nig. J. Renewable Energy, 13 : 11-14.
  75. Ajiwe, V.I.E., C.M. Ulakpa and T.U. Onuegbu, 2005. Additives effects on production of polyurethane flexible foams. World J. Biotechnol., 6: 957-967.
  76. Ngene, T.U., A.N. Eboatu, P.M. Nwako and C. Ezenwa, 2001. The distribution pattern for harmattan dust fillers in polypropylene matrix. J. Chem. Soc. Nig., 26: 180-183.
  77. Ogboso, E., A.N. Eboatu, T.U. Onuegbu and R.E. Asomugha, 2000. Thermomechanical properties of polypropylene-harmattan dust composite. Nig. J. Polym. Sci. Tech., 1: 89-91.
  78. Eboatu, A.N., T.U. Onuegbu, M.E. Udogu and G. Chukwu, 1998. The harmattan, nature's special gift to West Africa. Proceedings of the CSN Conference, September 20-24, 1998, University of Ibadan, Nigeria -.
  79. Eboatu, A.N., C.C. Ezeobi, L.O. Ezenweke and T.U. Onuegbu, 1997. Flame characteristics of some Tropical Timbers of South Eastern Nig. J. Renew. Energy, 5: 29-34.
  80. Onuegbu, T.U., 1989. Harmattan dust as filer in polypropylene. M.Sc. Thesis, NAU, Awka.