Aqueous solution characteristics
Low foaming
Due to its molecular structure, Nichigo G-Polymer™ has excellent low foaming
characteristics in aqueous solutions.
Aqueous solutions with excellent workability can be achieved without adding antifoaming agent.
Right: Nichigo G-Polymer™
Left: Fully saponified PVOH
【Test Method】
Put 1%
aqueous solution (200 ml) into a 1L graduated cylinder, blow in 300 cc/min of air through a sparger,
and observe the height of the foam over time.
Aqueous solution characteristics
Viscosity stability of aqueous solution
Aqueous solutions of Nichigo G-Polymer™ demonstrate excellent viscosity stability stored at low
temperatures.
In addition, by controlling the crystallinity, the thickening of the aqueous
solution can also be controlled.
【Storage stability of aqueous solution】
【Viscosity stability of aqueous solution at low temperature】
10% aq. sol. 5℃
Viscosity : Brookfield viscometer 10rpm
Nichigo G-Polymer™ aqueous solution features resistance to the occurrence of flow abnormality
even under high shear conditions.
Partially saponified type PVOH; Degree of saponification:88 mol%
Nichigo G-Polymer™ is stable resisting thickening even in aqueous solutions that have high
concentrations of alkali.
【Test Method】
Mix 12% aqueous solution and 20% NaOH aqueous solution 1:1.
Observe solution
condition after being left for 3 days at 23℃.
Comparison of the solubility of each product when dissolved in 10% NaOH aqueous solution
| Samples |
Just after dissolved |
After 1 day |
After 1 week |
| Nichigo G-Polymer™ AZF8035Q |
Dissolve |
Dissolve |
Dissolve |
| Partially saponified PVOH |
Partially dissolve |
Gelation |
Gelation |
| Fully saponified PVOH |
Partially dissolve |
Gelation |
Gelation |
【Test Method】
Polymer concentration : 6%
Dissolution condition : 90℃ ×
1hr
Storage temperature : 40℃
The viscosity of each pH stored at low temp.(5℃) or room temp.(23℃) was
measured.
Fully saponified PVOH stored at low temp, formed gel in one day. On the contrary, the
viscosity of Nichigo G-Polymer™ with any pH remained stable.
【Test Method】
Measure the viscosity of 7% aqueous solutions with pH=3, 8 and 13 stored at
5℃ or 23℃ for a month.
Although fully saponified PVOH does not dissolve in the solution with 30% alcohol, Nichigo
G-Polymer™ can be dissolved in 50% alcohol.
Aqueous solution characteristics
Surface tension
Nichigo G-Polymer™ aqueous solution demonstrates high surface tension compared with
PVOH.
Surface tensions of AZF8035Q
