Characterization of polyxylylenes with solid state {sup 13}C nuclear magnetic resonance spectroscopy

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Polyxylylenes are thermoplastics used as encapsulants for electronic devices. Five polyxylylenes were prepared by pyrolysis of [2.2]paracyclophanes and characterized by solid state {sup 13}C NMR spectroscopy. The chemical shift data, in combination with interrupted decoupling experiments, allowed assignment of resonances to their carbon sources in the polymers. This confirmed the integrity of the xylylene building block in the polymers and is consistent with linear polymers. No crosslinking could be detected within the NMR sensitivity limits. Residual paracyclophane was detected by {sup 13}C CP MAS NMR spectroscopy in the polyxylylene samples prepared at room temperature; however discrete {sup 13}C resonances due ... continued below

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6 p.

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Loy, D.A.; Assink, R.A.; Jamison, G.M.; McNamara, W.F.; Schneider, D.A. & Prabakar, S. February 1, 1996.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Livermore, CA (United States)
    Place of Publication: Livermore, California

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Polyxylylenes are thermoplastics used as encapsulants for electronic devices. Five polyxylylenes were prepared by pyrolysis of [2.2]paracyclophanes and characterized by solid state {sup 13}C NMR spectroscopy. The chemical shift data, in combination with interrupted decoupling experiments, allowed assignment of resonances to their carbon sources in the polymers. This confirmed the integrity of the xylylene building block in the polymers and is consistent with linear polymers. No crosslinking could be detected within the NMR sensitivity limits. Residual paracyclophane was detected by {sup 13}C CP MAS NMR spectroscopy in the polyxylylene samples prepared at room temperature; however discrete {sup 13}C resonances due to amorphous and crystalline phases in the polymers were not resolved.

Physical Description

6 p.

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OSTI as DE96007419

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  • Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996

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  • Other: DE96007419
  • Report No.: SAND--96-0340C
  • Report No.: CONF-960376--5
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 205023
  • Archival Resource Key: ark:/67531/metadc665798

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  • February 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • April 12, 2016, 8:24 p.m.

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Loy, D.A.; Assink, R.A.; Jamison, G.M.; McNamara, W.F.; Schneider, D.A. & Prabakar, S. Characterization of polyxylylenes with solid state {sup 13}C nuclear magnetic resonance spectroscopy, article, February 1, 1996; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc665798/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.