Thermal stability and rheological properties of PMMA/B2O3 nanocomposites synthesised by melting method. (16th March 2023)

• Record Type: Journal Article
• Authors: Doğan, Mehmet; Gündüz, Zürriye; Kızılduman, Berna Koçer; Turan Beyli, Pınar; Turhan, Yasemin; Doğan, Serap; Diken, Mehmet Emin
• Is Part Of: Plastics, rubber, and composites. Volume 52:Number 3(2023)
• Page Start: 186
• Page End: 196
• Publication Date: 2023-03-16
• Subjects: Nanocomposite -- thermal stability -- rheological properties; Plastics -- Periodicals; Rubber -- Periodicals; Polymeric composites -- Periodicals; Polymer engineering -- Periodicals; 668.9
• DOI: 10.1080/14658011.2022.2106727
• Languages: English
• ISSNs: 1465-8011

Abstract

ABSTRACT: Nano boron oxide (B2 O3 ) was firstly produced from granular B2 O3 by ball milling under cryogenic conditions. Then, PMMA/B2 O3 nanocomposites were synthesized by melting method and then characterized. Finally, the rheological properties of PMMA/B2 O3 nanocomposite were investigated using a high pressure capillary rheometer. Brauner-Emmet-Teller (BET) surface area analysis showed that the surface area of B2 O3 increased with cryogenic grinding. Transmission electron microscopy (TEM) images revealed that B2 O3 particles were nano-sized. Scanning electron microscopy (SEM) images showed that the morphology changed with the increase of B2 O3 amount. The thermal stability of nanocomposites was found to be better than PMMA. PMMA degraded in two steps, while nanocomposites degraded in one step. It was determined that the amount of residue increased with increasing amount of B2 O3 . Both PMMA and nanocomposites exhibited non-Newtonian shear thinning flow behavior. In addition, rheological data were found to be highly compatible with the Power Law model.