Table 2 Viscosity and surface tension data for the TEOS and TMMS based solutions and inks freshly prepared and after 1 week.

From: Development of hydrophobic paper substrates using silane and sol–gel based processes and deriving the best coating technique using machine learning strategies

Sample

Viscosity (Pa.s) @25 °C

Surface Tension (N/m) @25 °C

Fromm Number

As prepared

After 1 week

As prepared

After 1 week

As prepared

After 1 week

Ts1

0.0215

0.0637

33.25

45.72

2.568

2.063

Ts2

0.0367

Complete gelation

34.77

Complete gelation

3.083

NA

Ti1

0.0109

0.0599

30.59

37.64

6.125

2.641

Ti2

0.0114

Partial gelation

29.43

Partial gelation

7.258

NA

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