[Coral-List] Methods for nubbinising tabular corals?

[Ben Richards]

Shane -
	From the field point of view I would think an adhesive with visible 
light photoinhibitors might be nice (if such a thing is possible).  I 
have been reading the thread on UV initiators with some interest, but 
have been trying to figure out how to get the UV light between the two 
opaque attachment surfaces in a field setting (i.e. coral to rock).  If 
there was a way to trigger the curing process by the loss of light when 
the two surfaces were mated, that might be very interesting...

~ben


On Mar 15, 2004, at 9:47 AM, Shane Graber wrote:

> RE: UV curing of adhesives for coral frags:
>
> UV Process Supply (http://www.uvprocess.com/) has a couple LED powered 
> UV
> curing setups
> (http://www.uvps.com/products/Curiequ/uvled/uv_led_cureall.asp) for UV
> curable adhesives if you're looking for a good low wattage UV source 
> -- and
> the price isn't too expensive either.  I've been watching the 
> introduction
> of these LED's units for a year or two now for possible application in 
> our
> manufacturing processes (not marine related!) and they are definitely
> looking promising as LED prices come down.  I've toyed around with the 
> idea
> of custom formulating some sort of UV curable coral frag adhesive for
> personal use, but I've never really taken the time to do so (by day 
> I'm a UV
> coating formulator).  The concept isn't all that tricky and it'd 
> mostly be
> based on methaycrylate chemistry (which is, IIRC, what most dental
> formulations are based on) or acrylate chemistry (which is faster 
> curing).
> There's a number of UV formulating companies out there that may have
> something that could be modified for your applications and IIRC 
> Loctite also
> has UV formulations for adhesives (at least the last time I checked).  
> The
> nice thing about these kinds of adhesives is you put a blob of high
> viscosity adhesive on the surface you want to mount the frag on, push 
> the
> frag into the adhesive, and then shine the UV LED's on the adhesive 
> for a
> couple seconds and it's completely cured.  It's very interesting 
> technology
> (I'm biased of course).   ;)
>
> Another option would be having the formulation formulated with visible 
> light
> photoinitiators.  That way you wouldn't even need to mess around with 
> UV
> LED's and you could just use a high intensity visible light source to 
> cure
> the adhesive.  These would have a shorter working life as as soon as 
> you
> squirt the blob of adhesive onto the mounting surface the stuff would 
> start
> to cure.  These, however, would in general be higher priced due to the
> higher initial cost of visible light photoinitiators compared to UV
> photoinitiators.
>
> HTH
>
> Shane B. Graber
> Sr. Research Chemist
> E-Mail: sgraber at sauder.com
> Phone: (419) 446-3774
> Fax: (419) 446-4937
>
> Sauder Woodworking
> 502 Middle Street
> Archbold, OH 43502
> http://www.sauder.com/
>
>
>> toxicity.  Some
>> are available as point UV cured, which might be handy in a
>> lab setting.
>>
>>
>> Best,
>>
>> Eric Borneman
>>
>> Department of Biology
>> University of Houston
>> Science and Research Bldg II
>> 4800 Calhoun
>> Houston TX, 77204
>>
>> eborneman at uh.edu
>>
>
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>

---
Benjamin L. Richards
Program Specialist for Research and Information Technology
Florida Keys National Marine Sanctuary
P.O. Box 500368
Marathon, FL  33050

ben.richards at noaa.gov

phone: (305) 743-2437 x28
fax: (305) 743-2357
NEXTEL: (305) 360-1488

http://floridakeys.noaa.gov