CRYSTALLINE STARCH CITRATE BIOPOLYMER NANORODS AS POTENTIAL STABILIZERS IN NANO AND MICRO EMULSIONS

Year 2017, Volume: 1 Issue: 2, 191 - 200, 12.11.2017

Oluwaseyi Saliu , Gabriel Olatunji Oluwatoyin Ajetomobi Adebayo Olosho İdobu Abiodun Gbenga Amusan

Abstract

The area of green chemistry which
involves the synthesis of biodegradable polymers with better stabilizing
properties is fast-developing. Starch biopolymer was citrate modified and
converted to crystalline nanorods through green methods and was fully
characterized using the fourier transform infrared spectroscopy (FTIR),
scanning electron microscopy (SEM), transmission electron microscopy (TEM),
x-ray diffraction studies (XRD) and thermogravimetric analysis (TGA). The
crystalline starch citrate showed better morphological and thermal stability
properties than the ordinary and modified normal starch which has not been
converted to nano form. The starch citrate nanoparticle showed characteristic
bragg reflection angles at 2θ of 24°, 29° and 33° while the TGA result revealed
a single step thermal degradation at 240 to 410 °C and percentage weight loss
of about 89%. The SEM and TEM also confirmed the synthesis of rod-like or
cylindrical nanoparticles with little or no aggregation. This property coupled
with the thermal stability makes starch citrate nanoparticles a good stabilizer
for nano and micro emulsions.

Keywords

Starch citrate, nanoparticles, stabilizer

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