Re: formulight + hardener on plait glass

From: Ryuji Suzuki <rs@silvergrain.org>
Subject: Re: formulight + hardener on plait glass
Date: Mon, 13 Sep 2004 14:22:02 -0400 (EDT)

> I think dry gelatin will degrade a bit below 200C (can look up what
> the literature value is and post later). If you want to seal the image
> in glass, you might want to look for histology supplies for making
> microscope slides. (but you won't get the fused image, of course.)

This is an excerpt from Gelain by Thomas R Keenan of Knox Gelatine.

2.1 Stability. Dry gelatin stored in airtight containers at room
temperature has a shelf life of many years. However, it decomposes
above 100C. For complete combustion, temperatures above 500C are
required. When dry gelatin is heated in air at relatively high
humidity, <60% rh, and at moderate temperatures, ie, above 45C, it
gradually loses its ability to swell and dissolve. Aquaous solutions
or gels of gelatin are highly susceptible to microbial growth and
breakdown by proteolytic enzymes. Stability is a function of pH and
electrolytes and decreases with increases with increasing temperature
because of hydrolysis.

--
Ryuji Suzuki
"You have to realize that junk is not the problem in and of itself.
Junk is the symptom, not the problem."
(Bob Dylan 1971; source: No Direction Home by Robert Shelton)