• Grzelak, M.
• Andrzejewski, Jacek
• Szostak, M.
• Dudziec, Beata

Abstract

<p>The presented research results are a summary of the work carried out under the project on the application attempts to use POSS additives as modifiers of poly(ethylene terephthalate). The carried out works included preparation processing and properties measurements of obtained nanocomposites. The heptaizobutylo (vinyl) silsesquioxane was introduced into the polymer matrix by hot mixing in two concentrations 0.5% and 1% wt. Samples necessary to conduct further investigations were made by injection molding. The prepared material properties were evaluated in the several tests: static tension measurement, DMTA and DSC analysis, SEM observations. Calorimetric measurements were performed to follow the differences in the kinetics of crystallization. Rheological measurements were carried out using a rotational rheometer to evaluate the processability of the nanocomposite. The research was supplemented by the acetaldehyde emission test. Studies have shown a tendency to aggregation of used nanoadditive, despite his very low concentrations, SEM-EDS analysis revealed the presence of numerous clusters of used POSS compound. The most visible effect of POSS addition was observed in the level of crystallinity of the polymer, where the nucleation process was reported. This happens in the absence of significant changes in mechanical properties.</p>

Topics

• nanocomposite
• compound
• cluster
• polymer
• scanning electron microscopy
• differential scanning calorimetry
• Energy-dispersive X-ray spectroscopy
• injection molding
• crystallization
• crystallinity