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Synthesis, Properties, and Processing of New Siloxane-Substituted Poly(p-xylylene) via CVD

Title data

Bier, Anna K. ; Bognitzki, Michael ; Schmidt, Alexander ; Greiner, Andreas ; Gallo, Emanuela ; Klack, Patrick ; Schartel, Bernhard:
Synthesis, Properties, and Processing of New Siloxane-Substituted Poly(p-xylylene) via CVD.
In: Macromolecules. Vol. 45 (24 January 2012) Issue 2 . - pp. 633-639.
ISSN 0024-9297
DOI: https://doi.org/10.1021/ma2021369

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The synthesis of a disiloxane-functionalized [2.2]paracyclophane and its polymerization to the corresponding siloxane-substituted poly(p-xylylene) via chemical vapor deposition (CVD) has been described. Because of the enhanced solubility of the siloxane substituted poly(p-xylylene) analysis of the molecular structure by NMR, molecular weight, and polydispersity by gel permeation chromatography (GPC), and processing by film casting as well as nanofiber formation by electrospinning was possible. Structural isomers were found by NMR which was expected due to the isomeric mixture of the precursor. High molecular weights at moderate polydispersities were found by GPC which was unexpected for a vapor phase deposition polymerization. The amorphous morphology in combination with a low glass transition temperature led to high elongation at break for the siloxane substituted poly(p-xylylene). Significant difference for the wetting versus water was found for as-deposited films,.solution cast films, and nanofibers obtained by electrospinning with contact angles up to 135 degrees close to superhydrophobic behavior.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: CHEMICAL-VAPOR-DEPOSITION; SURFACE MODIFICATION; P-XYLYLENES; PARYLENE-C; THIN-FILMS; POLYMER; COPOLYMERIZATION; DERIVATIVES; COATINGS
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: 31 Mar 2015 10:28
Last Modified: 31 Mar 2015 10:28
URI: https://eref.uni-bayreuth.de/id/eprint/9517