|
Authors
|
Hoffmann, T. ; Pospiech, D. ; Häußler, L. ; Sahre, K. ; Komber, H. ; Harnisch, C. ; Auf der Landwehr, M. ; Schäfer, A. ; Döring, M.
|
|
Title
|
Phosphorus-containing polysulfones - a comparative study
|
|
Date
|
15.03.2010
|
|
Number
|
20722
|
|
Abstract
|
A comparative study of the influence of 2-(10-oxo-10H-9-oxa-10{lambda}5-phosphaphenanthrene-10-yl)-benzene-1,4-diol (DOPO-HQ) and 2-(2,8-dimethyl-10-oxo-10H-10{lambda}5-phenoxaphosphine-10-yl)-benzene-1,4-diol (DPPO-HQ) on their ability to form polysulfones (PSU) with 4,4'-difluorodiphenylsulfone (DFDPS) as well as the properties of the aromatic phosphorus-containing polysulfones (P-PSU) is reported. These properties are also compared to bisphenol A-based polysulfone. Both diols have the phosphorus unit as substituent and differ in the number of oxygen atoms within the environment of the phosphorus changing from DOPO-HQ (phosphinate structure, Ar2OP(=O)) to DPPO-HQ (phosphine oxide structure, Ar3PO). The nucleophilic aromatic polycondensation was carried out successfully using both phosphorus-containing aromatic diols instead of bisphenol A and was followed by ATR-FTIR in-line monitoring. The use of DPPO-HQ decreased the number of side reactions and enhanced slightly the molecular weight. The thermal stability of DPPO-HQ-based PSU is slightly better than DOPO-HQ-based PSU. Thermal decomposition schemes for PSU and for both P-PSUs are proposed based on thermogravimetric analysis and Pyrolysis GC-MS results.
|
|
Publisher
|
High Performance Polymers
|
|
Wikidata
|
1
|
|
Citation
|
High Performance Polymers 22 (2010) 715-741
|
|
DOI
|
https://doi.org/10.1177/0954008309353951
|
|
Tags
|
phosphorus-containing polysulfones thermal decomposition flame retardancy dopo-hq dppo-hq retardant epoxy-resins flame-retardant behavior blends polymerization decomposition spectroscopy copolymers stability polymers
|
