Igc-Sea

Industries that benefit from iGC-SEA:

iGC-SEA APPLICATIONS

Nuclear Pharmaceutical Personal Care

Energy Food Industrial Materials

Aerospace Building Materials Chemical

Competitive sorption : Dispersive surface energy values for different proton exchange membranes as a function of background relative humidity conditions. Dispersive, Polar and Acid-Base Surface Energy/Chemistry Gutmann acid (K a ) and base (K b )

Work of adhesion and work of cohesion values for different nanofiller-polyurthane composites correlate directly with composite mechanical properties. There is a good blending performance with a W ad /W coh ratio near 1. Works of Adhesion and Cohesion

Surface Energy Heterogeneity Profiling

Dispersive Surface Energy Profiles Budesonide Samples

Dispersive Surface Energy Distributions Budesonide Samples

values for different polymers along with their relative ranking on the triboelectric series .

7.0

55.0

Micronized Crystalline

Micronized Crystalline

6.0

50.0 Dispersive Surface Energy mJ/m 2 45.0 40.0 35.0 30.0

5.0

Triboelectric Series Order K b /K a

Tensile Strength at Break (MPa)

4.0

I I

30.00

Sample W ad

/W

BPSH Nafion

I

3.0

coh

I I

25.00

2.0

I

20.00 0.00 Dispersive Surface Energy (mJ/m 2 ) 10 15.00 10.00 5.00

1.0

Area Increment (%)

_

0.0

Polymethyl metharcrylate 1.33 Polycarbonate 1.10 Acrylonitirile 1.09 Polybutadiene-Styrene Polypropylene 0.63 Polyvinylchloride 0.02

35.0

38.0

41.0

44.0

47.0

53.0

50.0

Polyurethane Alone

----- 61 + 4 0.55 60 + 7

0.00

0.03

0.06

0.09

0.12

0.15

_

Fractional Surface Coverage

Dispersive Surface Energy mJ/m 2

As Received

Multi-walled Nanotube Oxidized Multi-walled 0.49 56 + 6 Nanotube As Received Nanoclay 0.47 54 + 11 Functionalized Nanoclay 0.86 71 + 7 _

The surface energy distribution is the integration of the surface energy profile across the entire range at surface coverage and is analogous in principle to a particle size distribution.

_

50

90

_

%RH

Adsorption Isotherms, Heats of Adsorption & Henry Constants

Spray Dry (SD) and Freeze Dry (FD) Product Evaluation

Solubility Parameters (Hildebrand and Hansen) Hidebrand solubility parameter for Polymethyl Methacrylate. Value of 19.08 MPa 1/2 agrees with literature values (17.4-21.3 MPa 1/2 ).

Peak maximum sorption isotherms of hexane on M745.

Series of pulses for a multiple injection experiment (variable concentration) on M745 with hexane at 303 K.

The SD product/sample has an energetically more homogenous surface due to a more uniform particle size and shape. The FD product/sample exhibits a wide variation of surface energy sites.

1.6

1.4

Lactose monohydrate Spray Dried Lactose monohydrate Freeze Dried

1.2

1

0.8

0.6

0.4

0.2

0 Area Increment [%]

0

10

20

30

70

40

50

60

Total Surface Energy (mJ/m 2 )