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Professor James Njuguna


Demulsification and recycling of spent oil based drilling fluid as nanofiller for polyamide 6 nanocomposites. (2016)
Thesis
ADEGBOTOLU, U.V. 2016. Demulsification and recycling of spent oil based drilling fluid as nanofiller for polyamide 6 nanocomposites. Robert Gordon University, PhD thesis.

Spent oil-based drilling fluid and cutting wastes are global liabilities due to their hazardous hydrocarbon content, which impacts negatively on flora, fauna, and global carbon footprint. The formulation of two demulsifiers to ensure chemically-enhan... Read More about Demulsification and recycling of spent oil based drilling fluid as nanofiller for polyamide 6 nanocomposites..

Thermal stability, flame retardancy and mechanical properties of polyamide/montmorillonite nanocomposites prepared by melt processing. (2016)
Presentation / Conference
SIDDIQUE, S., YATES, K. and NJUGUNA, J. 2016. Thermal stability, flame retardancy and mechanical properties of polyamide/montmorillonite nanocomposites prepared by melt processing. Presented at the 3rd International conference on structural nano composites (NANOSTRUC 2016), 12-16 September 2016, Aberdeen, UK.

The increase in thermal stability, flame retardancy, and mechanical properties of Polyamide 6 (PA6)/montmorillonite (MMT) nanocomposites open a new research window in respect to successful technical application of PA6/MMT nanocomposites on the indust... Read More about Thermal stability, flame retardancy and mechanical properties of polyamide/montmorillonite nanocomposites prepared by melt processing..

Abstract book for the proceedings of the 3rd International conference on structural nano composites (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK. (2016)
Conference Proceeding
STAROST, K. and NJUGUNA, J. (eds.) 2016. Abstract book for the proceedings of the 3rd International conference on structural nano composites (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK. Berlin: Nanostruc [online]. Available from: https://web.archive.org/web/20180123120946/http://www.nanostruc.info/nanostruc-conference.html

The theme of the 3rd NANOSTRUC 2016 conference is on ‘Nanoscience and Nanotechnologies – Recent Advances towards Nanoproducts and Applications’. The conference is aimed to promote activities in various areas on materials and structures by providing a... Read More about Abstract book for the proceedings of the 3rd International conference on structural nano composites (NANOSTRUC 2016), 12-15 September 2016, Aberdeen, UK..

Preparation and analysis of multi-layered hybrid nanostructures. (2016)
Journal Article
KHOBRAGADE, P.S., HANSORA, D.P., NAIK, J.B., NJUGUNA, J. and MISHRA, S. 2016. Preparation and analysis of multi-layered hybrid nanostructures. Applied clay science [online], 132-133, pages 668-674. Available from: https://doi.org/10.1016/j.clay.2016.08.022

In this study, we report a simple and efficient (bath ultrasonication) method for the preparation of multi-functional layered hybrid nanostructures using graphene oxide (GO) and modified Mg-Al layered double hydroxides (LDH) [LDH@GO]. The functional... Read More about Preparation and analysis of multi-layered hybrid nanostructures..

Stress analysis at the interface of metal-to-metal adhesively bonded joints subjected to 4-point bending: finite element method. (2016)
Journal Article
PRATHURU, A.K., FAISAL, N.H., JIHAN, S., STEEL, J.A. and NJUGUNA, J. 2017. Stress analysis at the interface of metal-to-metal adhesively bonded joints subjected to 4-point bending: finite element method. Journal of adhesion [online], 93(11), pages 855-878. Available from: https://doi.org/10.1080/00218464.2016.1172309

This paper presents a study of stress states in two-dimensional models of metal-to-metal adhesively bonded joints subjected to 4-point flexural loading using the finite element (FE) method. The FE simulations were carried out on adhesive bonded joint... Read More about Stress analysis at the interface of metal-to-metal adhesively bonded joints subjected to 4-point bending: finite element method..

Flexural, impact, rheological and physical characterizations of POM reinforced by carbon nanotubes and paraffin oil. (2016)
Journal Article
YOUSEF, S., VISCO, A., GALTIERI, G and NJUGUNA, J. 2016. Flexural, impact, rheological and physical characterizations of POM reinforced by carbon nanotubes and paraffin oil. Polymers for advanced technologies [online], 27(10), pages 1338-1344. Available from: https://doi.org/10.1002/pat.3801

The paraffin oil dispersion technique innovated in the recent years to synthesize bulk polymer nanocomposite materials has a uniform dispersion. This research work aims to study the effect of added carbon nanotubes (CNTs) on flexural, impact and rheo... Read More about Flexural, impact, rheological and physical characterizations of POM reinforced by carbon nanotubes and paraffin oil..

Thermal, mechanical and rheological behaviors of nanocomposites based on UHMWPE/paraffin oil/carbon nanofiller obtained by using different dispersion techniques. (2016)
Journal Article
VISCO, A., YOUSEF, S., GALTIERI, G., NOCITA, D., PISTONE, A. and NJUGUNA, J. 2016. Thermal, mechanical and rheological behaviors of nanocomposites based on UHMWPE/paraffin oil/carbon nanofiller obtained by using different dispersion techniques. JOM: journal of the Minerals, Metals and Materials Society [online], 68(4), pages 1078-1089. Available from: https://doi.org/10.1007/s11837-016-1845-x

Ultra-high molecular weight polyethylene (UHMWPE) is a very attractive polymer employed as a high performance material. For its high viscosity, dispersion of fillers is considered a critical point in UHMWPE nanocomposites preparation process. Current... Read More about Thermal, mechanical and rheological behaviors of nanocomposites based on UHMWPE/paraffin oil/carbon nanofiller obtained by using different dispersion techniques..