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Optical and Thermomechanical Properties of Doped Polyfunctional Acrylate Copolymers

Hanemann, Thomas; Honnef, Kirsten

Abstract:
Three different polyfunctional acrylate monomers-trimethylolpropantriacrylate (TMPTA), pentaerythritol triacrylate (PETA) and di(trimethylolpropane) tetraacrylate (DTTA)-have been used as comonomers in combination with a reactive resin consisting of poly(methylmethacrylate), dissolved in its monomer methylmethacrylate. Phenanthrene has been added to form a guest-host system. The level of phenanthrene present may be adjusted to tailor the refractive index in the system. Prior to curing, the shear rate and temperature-dependent viscosity as a function of the composition were measured. It could be demonstrated that, with respect to different shaping methods, a tailor-made flow behaviour can be adjusted. After thermally-induced polymerization, the resulting optical (refractive index, optical transmittance) and thermomechanical (glass transition behavior, Vickers hardness) properties were characterized. A significant refractive index increase-up to a value close to 1.56 (@589 nm)-under the retention of good optical transmittance was able to
be obtained. In addition, the photopolymerization behaviour was investigated to overcome the unde ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000081492
Veröffentlicht am 03.04.2018
Zugehörige Institution(en) am KIT Fakultät für Maschinenbau (MACH)
Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2073-4360
urn:nbn:de:swb:90-814924
KITopen-ID: 1000081492
HGF-Programm 43.22.03 (POF III, LK 01)
Erschienen in Polymers
Band 10
Heft 3
Seiten Art.Nr. 337
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte refractive index tailoring, optical transmittance, polymer waveguides, photoinitiated, curing, photopolymerization, UV-curing
Nachgewiesen in Scopus
Web of Science
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