Nano chitosan

Chitosan and Nano Chitosan Properties and Application to Textiles... 

Stabilization of nano chitosan dispersion can be explained on the principle of Coulombic or electrostatic repulsion. Particles in a colloid, due to smaller size, are often pushed around by the molecular collisions of the surrounding media, an effect called Brownian motion. The Brownian motion is a rather random, causing the particles to collide with each other frequently and aggregate to form larger particles, which settle down due to their weight. A... 

Figure 19.36 Experimental setup for the preparation of nano chitosan by ionic gelation method.

Figure 19.37 Size distribution of nano chitosan (CHTN) by intensity [particle size 319.4 nm, pdi 0.422) [148].

The viscosity of polymer solution, at the molecular level, is a direct measure of the hydrodynamic volume of the polymer molecules, which in turn is governed by the molecular size or the chain length and hence the molecular weight [32], The viscosity of nano chitosan dispersion decreases with reduction in the particle size, as reported in the literature [148], It was also reported that the... 

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