plastic GC research, help needed :)
plastic GC research, help needed :)
(OP)
Hello all, I am currently doing some research on plastics and wondered if there was a US/GLOBAL standard for PET/E PE PP HDPE LDPE etc
I.e. that each bottle of coke or fanta would be of the same composition of plastics or a mix of the above plastics.
I am looking at GC of the bale plastics to work out the kind of gasses that maybe produced, and would like an indication of how many tests would be ideal,
I am assuming I will need to do a group of tests over a period of time to get an average, and the cost of CG, is it really as high a s 1-1.5k us dollars? that could get pretty spendy and if the standards are the same like an iso shipping container, then would GC tests on the various separate plastics really be worth it?
I look forward to hearing from those that can help
thanks
Sterling Power
I.e. that each bottle of coke or fanta would be of the same composition of plastics or a mix of the above plastics.
I am looking at GC of the bale plastics to work out the kind of gasses that maybe produced, and would like an indication of how many tests would be ideal,
I am assuming I will need to do a group of tests over a period of time to get an average, and the cost of CG, is it really as high a s 1-1.5k us dollars? that could get pretty spendy and if the standards are the same like an iso shipping container, then would GC tests on the various separate plastics really be worth it?
I look forward to hearing from those that can help
thanks
Sterling Power






RE: plastic GC research, help needed :)
GC? Gas Conversion?
www.tynevalleyplastics.co.uk
RE: plastic GC research, help needed :)
Gas Chromatography :)
RE: plastic GC research, help needed :)
Molecular weights change from grade to grade and even during processing.
Some are also co-polymers with various levels of substitution.
Most manufacturers are multinational and sell the same range worldwide, but certain markets have local preference, for instance, in Australia, PET beverage bottles are nearly always a co-polymer to increase toughness to accommodate the rocket bottom design.
There are no national standards that I am aware of for the raw materials. The standards are set by the manufacturers. There may be national standards for some applications, but not for materials in general.
Regards
Pat
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RE: plastic GC research, help needed :)
A lot of (if not all) packaging materials are multi-layered with assorted polymers. e.g barrier/cheap/printable layers.
H
www.tynevalleyplastics.co.uk
RE: plastic GC research, help needed :)
Thanks
Sterling power