PVA acts as protective colloid
, stabilizing the double emulsion droplets by adsorbing onto their surface , It is understandable that its concentration has a major influence on the fraction of smaller particles, since small droplets can only survive up to the final curing process if steric stabilization is effective.
Another valuable application for Nichigo G-Polymer is its use as a functional polymer protective colloid
agent in emulsion polymerization of various acrylic emulsions." www.soarus.com; www.g-polymer.com.
Wet end starch also works as a protective colloid
for reactive sizes in alkaline papermaking.
The copolymer is prepared by emulsion polymerization and occurs in the presence of a nonionic protective colloid
. The copolymer has a particle size of less than one micron.
The yielded droplets were stabilized against coalescence in the presence of a granulating agent or protective colloid
. The degree of protection depends on the type and concentration of the protective colloid
This is found in the well-known fact that the vertical transport of soil particles insoluble in water is made possible by hydrophilic substances (so-called "protective colloids
The emulsifying action of substances of high molecular weight, such as gelatin, casein, polymethacrylic acid, methylcellulose and polyvinyl alcohol, and their action as protective colloids
, can be best explained by the colloid dispersion.