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Friday, August 23, 2019

Analytical Analysis of Artwork. Weblink

Greenland or Bust. Graphic Art David Soriano

Yellow Ochre/ Freshly Mulled/ Synthetic Petrolatum

It now is known that the Neanderthals were painting in the European caves. Some  earth pigments were available to the artists.

In the following image, you can see freshly mulled yellow ochre (iron oxide) in a synthetic petrolatum I have described in a previous uploaded post.

The ochre mulls nicely in the vehicle and has been applied to bristol cardstock ( no undercoat).

left: the natural halloysite ( nanotubular) kaolin clay ( from Idaho, USA) and right: no clay added.

This clay clearly prevents paint streaks which may be difficult to see in the lighting I had when capturing the image.

The synthetic ( from renewables) is an interesting vehicle for oil-based paints which may interest artists .

Thursday, August 22, 2019

Neuron. Graphic Art David Soriano

David Soriano

Dave Soriano Ph.D.
Chemistry professor and amateur artist. Current research: novel paint formulations.

Summer, 2018

"Optic Spark" Fantasy Art by David S. Soriano

The most remarkable imagery of which was the fusion of ahamkara which seemed like the highest and final end of all states of being.

Things Incomprehensible Fantasy Art by David S. Soriano

With the eyes closed ,hordes of entities clamored for attention, made of colored fractal energy, leading to thought processes onto calculations of things incomprehensible .....

Synthetic Petrolatum Emulsified Paint Formulation Video

An extended video will be uploaded on preparing synthetic petrolatum ( renewables) as a component of emulsified paint formulation.

Petrolatum mixture contains: coconut oil, transesterified lanolin ,tranesterified linseed oil, talcum, beeswax, castor oil , Gold Bond powder, emulsifying wax.

The lanolin and linseed oil were reacted with trimethylolpropane ( p-toluene sulfonic acid catalyst, 150-160 deg C/ 2-3 hrs) to afford lanolin with released fatty alcohols and linseed oil mono-ester which is a non-ionic drying oil surfactant.

The petrolatum is homogeneous and fully liquid at 90 deg C, cooled to 50 deg C and blended for 2-3 minutes before pouring in pans to cool to 20 degC overnight.

Mixing with watercolors or gouache creates an emulsified paint formulation.

Cooling petrolatum after blending.

Above: After 15 hrs at 20 deg C. Upper left: lanolin transesterified with trimethylolpropane. upper right: lanolin (untreated).  Lower left and right: the synthetic petrolatum .

Above: A commercial green gouache paint blended with the synthetic petrolatum. The unusual nanotubular halloysite kaolin mineral added . Right : same paint without the mineral added.
The lighting for the images is not the nest, but the mineral helps brush flow and minimizes streaks. No undercoat used for either sample and the foundation is cardstock.
The novel paint formulations will be prepared with various pigments /dyes and studied. The paint is dry to the touch within one day at 20 deg C. The linseed component in the petyrolatum should dry over time.

Bee Pollination/ Spearmint Leaves/ Western PA., USA

Two species of bees working spearmint leaves on my property.
Spearmint is invasive, but I want the bees to do their pollination.

Lanolin Tranesterification With Trimethylolpropane/ Acidic Conditions

Brief video ( one minute) of the transesterification reaction. I am using 370 g/mole for the lanolin and am reacting equi-molar amounts of reactants.  150-165 deg C 2-3 hrs. I am hoping the product will have released fatty alcohols which are known to increase emulsifying properties. I am working on novel paint formulations with watercolor/gouache with synthetic petrolatum.

Sunday, August 18, 2019

Novel Paint Formulation Research Jojoba Oil Hydrolysis

Previously, I have uploaded posts on my research with lanolin saponification followed by acidification. The saponification was conducted in glycerol ( vs. water or ethanol) to shorten the reaction time.

In addition, the presence of glycerol in. the fatty acid/ fatty alcohols is desirable since an emulsion results- great for blending with synthetic petrolatum.



The next reaction we conduct will be the similar hydrolysis of jojoba oil- which contains mostly mono esters of fatty alcohols, this jojoba oil is a wax. 

Hydrolyzed jojoba oil ( acidic conditions) yields a tacky gel soluble in alcohols, for example.

The substance has use in cosmetic applications.

I will use a molecular mass of 606 g/mole based on a technical paper published by a government lab in IL, USA.

The material may form an emulsion in glycerol for use in paint formulations- we will see.

Novel Paint Formulation II (Watercolor/ Modified Lanolin /Synthetic Petrolatum)

I am conducting chemical research on novel paint formulations for artists.

In this experiment, I conducted base-promoted (saponification) of lanolin in glycerol betweeen 165-185 deg. over 30 minutes.
It is anticipated that complete saponification should occur under these conditions in about 30 minutes.
4.0 g sodium hydroxide dissolved in glycerol at 120-130 deg cCin about 15 minutes to yield a bright yellow solution.

The temperature of solution was brought to about 155 deg C (+/- 5 degrees) 
25 g lanolin (Fisher Scientific) was added over 30 seconds to the stirred solution of glycerol.
The temperature reached about 180-185 deg c over 30 minutes. A transition in color, viscosity , solubility occurs over this time period. The final appearance is a brown (soap) appearance and is homogeneous at this termperature.

The solution was stirred while the temperature was allowed to drop to about 60-70 deg C over  30 minutes.

At this point , the material is a viscous semi-solid. Additional cooling would afford the soap.

10% H2SO4 was added slowly and stirring continued to bring the soap to a beige-tan emulsion.  The PH should be 1-2.

When virtually no solid soap particles are observed, the solution is cooled to ambient temperature.
The beaker contents are transferred to a blender, water added to desired viscosity and blending conducted for 2-3 minutes.
A more viscous emulsion was obtained vs. the results in my previous post.
The soap can be subjected to acetone extraction over 6 hours to separate the fatty alcohols from the fatty acid sodium carboxylates.  We will obtain a GC/MS on the acetone extract and compare with the cake extract from conditions described in the prior upload /

The modified lanolin emulsion ( saponified/ acidified in aq. acid/ glycerol) was blended with an inexpensive commercial watercolor (red hue) and 'synthetic petrolatum' (previous upload preparation) along with a small amount (spatula tip) of 'Gold Bond Foot Powder' ( contains talcum, acacia extract and zinc oxide among other components; it does help with brush flow).
Stirring for 15 -30 seconds affords a nice paint formulation.
I applied the paint with bristle / flat brushes to watercolor paper (140 lb).

Next experiment: The use of oil-based paint to form the emulsified paint formulation.
Above: emulsified modified lanolin/ a synthetic petrolatum ( from renewables) and commercial red watercolor.

Above: The sodium hydroxide at the point of solubility in the glycerol.

Above: The lanolin has been added and saponification starts.
For a short period of time , a precipitate is observed but goes back in solution as the reaction progresses. The solution becomes a darker amber.

The  heat is shut down and the reaction cools from 170-185 Deg.C.  At 55-75 Deg C, the 10% H2SO4 is added in small portions and reaction stirred for at least 30 minutes. The cooled emulsion is placed in a blender for smooth homogenation before use in paint formulation.

The emulsion starts breaking after 48 hrs at 20 deg C: