The speed of sound
can be considered to evaluate acoustical parameters and hence, to investigate
physico-chemical properties of drug polymer suspension.
Investigations of
these physico-chemical properties enable to understand the nature and strength
of particle-liquid interactions. The suspensions were made up of a 1:1, 1:2,
1:3, 1:4, 1:5 mixtures by weight of drug Risperidone and Polyethylene Glycol by
using ultrasonic probe sonicator.
The product was
further characterized by using techniques such as scanning electron microscopy
(SEM), fourier transform infrared spectrocopy (FTIR). Ultrasonic velocity,
density, and viscosity have been measured for different
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