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- From: ewstroup@cc.utah.edu (ERIC W. STROUP)
- Subject: Re: identifying polymer cross linking
- Message-ID: <18DEC199210044516@cc.utah.edu>
- News-Software: VAX/VMS VNEWS 1.4-b1
- Sender: news@fcom.cc.utah.edu
- Organization: University of Utah Computer Center
- References: <1992Dec15.224100.25463@infonode.ingr.com> <1992Dec16.140721.22950@lmpsbbs.comm.mot.com>
- Distribution: usa
- Date: 18 Dec 1992 10:04 MST
- Lines: 33
-
- In article <1992Dec16.140721.22950@lmpsbbs.comm.mot.com>, A10035@email.mot.com (Scott Lindsey) writes...
- {In article <1992Dec15.224100.25463@infonode.ingr.com>, brantley@infonode.ingr.com (Dwight D. Brantley) writes:
- {>
- {> I have been experimenting with determining the integrity of cross linked
- {> polymers. So far I have exposing my samples in an oxygen rich plasma etch
- {> for 10 minutes then analyzing the sample in a SEM. I think we are seeing
- {> that examples of proper or "good" cross linked polymers show a grain of
- {> structure of uniform size and orientation while the "bad" samples seem
- {> to display a wide variation of grain size over a given area. Is this a
- {> viable method of analyzing such materials? Can anyone add anything to
- {> this? I am not very familiar with such materials so consider me mostly
- {> ignorant on this subject. Any information (in simple terms) would be of
- {> great help.
- {>
- {> Thanks,
- {>
- {> ******************************************************************
- {> * Dwight Brantley * Failure Analysis & Reliability Dept. *
- {> * Intergraph, Corp. * Reply To: brantley@falab1.b21.ingr.com *
- {> * Huntsville, AL * Voice: 205-730-4456 *
- {> ******************************************************************
- {>
- {Since you claim to be relatively unfamiliar with polymer materials, I will
- {just say that you must be careful that you are not changing the crosslinking
- {with the SEM!! (You can be crosslinking or degrading, depending on which polymer
- {you are looking at). What polymers are you looking at?
-
- Some work with ESCA (aka XPS) has been used to identify surface crosslinking.
- The work is by D.T. Clark around 1970's, I'll try and dig up the reference.
-
- -Eric
- ewstroup@cc.utah.edu
-
-