Re: How to analyze molecular weight of PEEK(polyetheretherketone)?
- From: "john.spevacek@xxxxxxxxxxxxxxxxx" <john.spevacek@xxxxxxxxxxxxxxxxx>
- Date: 17 Jan 2006 12:02:25 -0800
You could try dilute solution capillary viscometry. (It's a cheaper/
simpler method if you have the equipment. A high schooler with a stop
watch can produce world class results.) The 4th edition Polymer
Handbook list the Mark-Houwink constants as K = 22.6 x 10^-3 ml/g, a=
0.818 for methanesulfonic acid at 30 C, and K = 58.6 x 10^-3 ml/g, a =
0.702 at 35 C for a 60/40 w/w p-chlorophenol/o-dichlorobenzene mix.
I'm surprised the measurement temperatures are that low.
John
Aspen Research - www.aspenresearch.com
"Turning Questions into Answers"
Opinions expressed herein are my own and may not represent those of my
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