Structural analysis of PPX prepared by vapor phase pyrolysis of [2.2]paracyclophane

Title data

Schmidt, C. ; Stümpflen, Volker ; Wendorff, Joachim H. ; Hasenhindl, A. ; Gronski, W. ; Ishaque, Michael ; Greiner, Andreas:
Structural analysis of PPX prepared by vapor phase pyrolysis of [2.2]paracyclophane.
In: Acta Polymerica. Vol. 49 (1998) Issue 5 . - pp. 232-235.
ISSN 1521-4044
DOI: https://doi.org/10.1002/(SICI)1521-4044(199805)49:5<232::AID-APOL232>3.0.CO;2-L

Official URL:

Abstract in another language

Poly(p-xylylene) (PPX) was prepared by vapor phase pyrolysis of 2.2]paracyclophane following the procedure of Gorham. PPX was obtained in different crystalline modifications by dry annealing, dissolution and reprecipitation under different conditions. These samples were analyzed by WAXS and C-13 CP-MAS NMR spectroscopy. Clear evidence was found that the presence of different crystalline modifications is responsible for the unexpected C-13 CP-MAS NMR spectrum as observed for as-polymerized PPX. An attempt was made to explain the differences observed in the C-13 CP-MAS NMR spectra of different crystalline modifications by different chemical environments utilizing simulations of the crystal unit cells.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	XYLYLENE
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Result of work at the UBT:	No
DDC Subjects:	500 Science > 540 Chemistry
Date Deposited:	16 Apr 2015 09:03
Last Modified:	09 Jun 2022 08:07
URI:	https://eref.uni-bayreuth.de/id/eprint/10244