Polymer Science and Engineering
The effects of ultra-low glass transition temperature (Tg) phosphate glass (Pglass) on the thermal, morphological, rheological, mechanical, and crystallization properties of hybrid Pglass/poly(eththylene terephthalate)(PET) were investigated. Nano- and micro-scale distribution of the Pglass in the PET polymer matrix was observed. The polydispersed Pglass in the PET matrix functioned as a nucleation agent, resulting in increasing crystallization temperature. The Pglass in the PET matrix decreased the Tg, indicating a plasticizing effect of the Pglass in the hybrids that was confirmed by the significantly decreased complex viscosity of the PET matrix. In addition, with increasing temperature, a non-terminal behavior of the viscoelastic properties occurred due to the hybrid structural changes and improved miscibility of the hybrid components. Further, the obtained solid-state variable temperature 31P and 1H NMR spectroscopy results showed strong Pglass concentration dependency of the interactions at the PET-Pglass interface.
Rahimi, S. K.,
Alam, T. M.,
Sorte, E. G.,
Otaigbe, J. U.
(2018). Unexpected Effects of Inorganic Phosphate Glass On Crystallization and Thermo-Rheological Behavior of Polyethylene Terephthalate. Polymer, 154, 135-147.
Available at: https://aquila.usm.edu/fac_pubs/16934
Available for download on Saturday, October 10, 2020