Preparation and characterization of polyvinyl alcohol (PVA)-glycerol composite films incorporating nanosilica from municipal solid waste incinerator bottom ash
Phan Thi Hong Hanh,
Thitipone Suwunwong,
Suchada Chantrapromma,
Patcharanan Choto,
Chuleeporn Thanomsilp,
Khamphe Phoungthong
Affiliations
Phan Thi Hong Hanh
Faculty of Environmental Management, Prince of Songkla University, Songkhla, 90112, Thailand
Thitipone Suwunwong
School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand; Center of Chemical Innovation for Sustainability (CIS), Mae Fah Luang University, Chiang Rai, 57100, Thailand
Suchada Chantrapromma
Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkhla, 90112, Thailand
Patcharanan Choto
School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand; Center of Chemical Innovation for Sustainability (CIS), Mae Fah Luang University, Chiang Rai, 57100, Thailand
Chuleeporn Thanomsilp
School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand
Khamphe Phoungthong
Faculty of Environmental Management, Prince of Songkla University, Songkhla, 90112, Thailand; Hub of Waste Management for Sustainable Development, Center of Excellence on Hazardous Substance Management, Chulalongkorn University, Bangkok, 10330, Thailand; Corresponding author. Faculty of Environmental Management, Prince of Songkla University, Songkhla, 90112, Thailand.
This study investigates the fabrication of a composite film composed of polyvinyl alcohol (PVA) and glycerol, incorporating nanosilica derived from municipal solid waste incinerator bottom ash (BA). The nanosilica is blended with a PVA film-forming solution containing glycerol as a plasticizer. The composite films are characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Additionally, thermogravimetric analysis (TGA) is conducted to evaluate the thermal properties, while the mechanical properties are assessed in terms of tensile strength (TS) and elongation at break (EAB). The results indicate that the presence of silica nanoparticles reduces transparency and increases film thickness in the presence of glycerol. Notably, the film containing 1% silica demonstrates a significant enhancement in tensile strength, exhibiting a 50% increase compared to the film without silica. However, higher silica loadings lead to a deterioration in mechanical properties due to silica agglomeration within the polymer matrix. As expected, the presence of silica in the films slightly elevates the degradation temperature.
