N . Devi and T. K. Maji
Department of Chemical Sciences, Tezpur University, Napaam, India
The efficiency of complex coacervation of gelatin A with sodium carboxymethyl cellulose
(SCMC) was measured by checking viscosity, coacervate yield (%), and turbidity of the
mixture. Maximum coacervation occurred at pH 3.5 and SCMC: gelatin ratio of 1.0:
2.33. Encapsulation efficiency, oil content, oil load, and release behavior of the micro-capsules were studied. The size and nature of the microcapsules varied with the con-centration of polymer and NSO as revealed by scanning electron microscopy study.
Fourier transform infrared (FTIR) spectroscopy indicated that there was no significant
interaction between the polymer and NSO.
Keywords characterization, complex coacervation, crosslinking agent, microencap-sulation, neem seed oil