Effects of Verbal and Graphed Feedback on Treatment Integrity
Document Type
Article
Publication Date
11-6-2013
School
Psychology
Abstract
We report the copolymerization of a flexible aliphatic-bridged bisphenol-based benzoxazine monomer comprising ten methylene units (BZ(10)BA) with two rigid benzoxazine monomers (commercially available Araldite 35600 and 35900) via a solvent-free cationic ring-opening polymerization process. The effects of monomer feed composition on polymerization behavior, thermomechanical transitions, and thermal degradation properties are reported. DSC of the ring-opening copolymerizations showed that the copolymerization behavior – in terms of polymerization onset temperature and total exothermic transition – depend greatly on the composition of the monomer feed. Samples containing larger concentrations of BZ(10)BA exhibited higher onset temperatures with lower polymerization enthalpies. The thermomechanical properties of the copolybenzoxazine networks, as evaluated by DMA, show a strong dependence on the monomer feed ratio, where higher Araldite content resulted in a higher Tg of the network. The most salient feature of benzoxazine copolymerization was revealed in the tailorability in thermomechanical properties, which were varied by 149 °C simply by changing the monomer feed ratio and the Tg was observed to be accurately predicted using the Fox equation.
Publication Title
Journal of Applied School Psychology
Volume
29
Issue
4
First Page
328
Last Page
349
Recommended Citation
Zoder-Martell, K.,
Dufrene, B.,
Sterling, H.,
Tingstrom, D.,
Blaze, J.,
Duncan, N.,
Harpole, L.
(2013). Effects of Verbal and Graphed Feedback on Treatment Integrity. Journal of Applied School Psychology, 29(4), 328-349.
Available at: https://aquila.usm.edu/fac_pubs/20297