@Article{jrm.2020.08449,
AUTHOR = {Vikas S. Hakke, Uday D. Bagale, Sami Boufi, G. Uday Bhaskar Babu, Shirish H. Sonawane},
TITLE = {Ultrasound Assisted Synthesis of Starch Nanocrystals and It’s Applications with Polyurethane for Packaging Film},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {8},
YEAR = {2020},
NUMBER = {3},
PAGES = {239--250},
URL = {http://www.techscience.com/jrm/v8n3/38471},
ISSN = {2164-6341},
ABSTRACT = {Starch nanocrystals (SNC) were prepared from maize starch using
ultrasound assisted acid hydrolysis. The process takes less time for the generation
of SNC, which is advantageous over conventional acid hydrolysis. The synthesized SNC were characterized using X-ray diffraction, dynamic light scattering,
zeta potential and transmission electron microscopy (TEM). Particle size and
TEM data show that the particles were near to 150 nm, with oval morphology.
The SNC with higher surface charge are obtained with this innovative approach
as compared to conventional acid hydrolysis. Because of high surface charge
and oval like morphology, the SNC performed well in reinforcing a polyurethane
film. The rise in crystallinity by 16% was observed due to ultrasound cavitation.
At the lower concentration of SNC in nanocomposite film, dynamic mechanical
analysis demonstrated meaningful increment in mechanical properties of polyurethane nanocomposite film. The decrease in chain slippage over the glass transition temperature was observed because of the SNC reinforcement in polyurethane
dispersion. Compared to the conventional acid hydrolysis, the present approach
for the synthesis of starch nanocrystals is much faster and easier.},
DOI = {10.32604/jrm.2020.08449}
}