Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/6540
Title: Sulfonated polyetheretherketone/polypropylene polymer blends for the production of photoactive materials
Authors: Enrico Fatarella
Ville Myllari
Marco Ruzzante
Rebecca Pogni
Baratto, Maria Camilla 
Mikael Skrifvars
Seppo Syrjala
Pentti Jarvela
Keywords: blends, photochemistry, polyolefins
Issue Date: 2015
Project: None 
Journal: JOURNAL OF APPLIED POLYMER SCIENCE
Abstract: 
Sulfonated polyetheretherketone (SPEEK) was synthesized via a mono-substitution reaction of PEEK in concentrated sulphuric acid and was blended with polypropylene (PP) in 2–10%w/w concentration to be used for the production of photoactive thermoplastic products. SPEEK and SPEEK/PP blends were characterized using FTIR, DSC, TGA, NMR, rheology, SEM, and EPR. Under UV-Vis irradiation, stable benzophenone ketyl (BPK) radicals were generated by hydrogen extraction from PP. By increasing the amount of SPEEK in the polymer blend a linear increase in the BPK radicals was achieved according to the EPR data. DSC and TGA tests indicated weaknesses in the thermal stability of SPEEK but according to the rheological tests this should not have a major effect on processabililty. The optimal amount of SPEEK in the blend was obtained at 5%w/w. This concentration provided a good compromise between radical concentration, material processability, and cost.
Description: 
71646
URI: http://hdl.handle.net/20.500.12779/6540
ISSN: 0021-8995
DOI: 10.1002/app.41509
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