DEVELOPMENT OF FUNCTIONAL POLYURETHANECENOSPHERES HYBRID NANOCOMPOSITE COATINGS FROM Ricinus communis SEED OIL
Loading...
Date
2022
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The utilisation of plant seed oils as a sustainable and biodegradable substitute for
petroleum-based chemicals cannot be overemphasised. This renewable feedstock is vital
for the development of polymeric organic coatings. This report investigates the one-spot
synthesis of castor seed oil, Isophorone diisocyanate, Trimethylolpropane (cross linker),
and the percentage composition of prepared cenosphere nanoparticles incorporated
within the polymer matrix. The hybrid coatings were characterised using FT-IR, XRD,
SEM, and NMR, as they all confirm the presence of the cenosphere fly ash nanoparticles
in the polyurethane. The FT-IR spectrum shows the presence of absorption peaks at 1350
cm-1
, 1102 cm-1
, and 1000 cm-1 which represent the (Al=O), (SiO-Si), (AlO4) functional
groups respectively. The SEM EDX of the PU-CFA revealed that aluminium, silica and
carbon have a percentage weight of 2.8 Wt.%, 4.6 Wt.%, 40.2 Wt.% respectively. The
thermal stability of the synthesised composites was evaluated on a thermogravimetric
analyzer (TGA). The TGA revealed that PU-CFA lost 50%, 30%, and 90% of its weight
at 418.16℃, 470.17℃, 506.96℃ respectively. The antimicrobial activity shows that PUCFA composite showed improved resistance towards Staphylococcus aureus and
Escherichia coli.