Hence, when the plant starts losing water, the monomeric form of Si transforms into the polymeric form, i.e., Si starts forming heavier chains of polysilicic
Tang, "Study on the hydrolysis-polymerization process of aluminum and the interaction between hydrolyzed aluminum species and polysilicic acid in flocculant polyaluminum silicate chloride (PASC)," ACTA Scientiae Circumstantiae, vol.
Wang, "Electron microscopic observation on sol and gel of polysilicic acid," Environmental Chemistry, vol.
Yokoyama, "Effect of polysilicic
acid on the precipitation of calcium carbonate," Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol.
Most of these minerals are largely insoluble, though low levels of mono- and polysilicic
acid invariably found dissolved in the soil solution.
Fortunately, the copolymer readily coats polysilicic
acids and this forms a particulate material that adheres to hair and allows recovery of style even when it has been altered by wind or water.
The curing of zinc silicate involves moisture from the atmosphere and is initiated by a reaction between polysilicic
acid and metallic zinc, in which the major part of the metallic zinc, which has not reacted, is surrounded by an insoluble matrix of zinc silicate.
Since aqueous sodium metasilicate solutions normally contain water, which is not compatible with thermoplastic polyurethane (TPU), a modified approach is adopted to extract polysilicic acid derived from aqueous metasilicate solution.
The polysilicic acid particles sizes in the THF solution were investigated using dynamic light scattering measurement.
While the silica was prepared through the polysilicic acid condensation through sodium metasilicate and hydrochloride ion exchanges, the average particle size was about 32 nm for the system without extraction.