Evaluating the mechanical, thermal, and antibacterial properties of poly (lactic acid)/silicone rubber blends reinforced with (3‐aminopropyl) triethoxysilane‐functionalized titanium dioxide nanoparticles

Abstract

Poly (lactic acid)/silicone rubber (PLA/SR) blends were reinforced with (3-aminopropyl) triethoxysilane-functionalized titanium dioxide nanoparticles, and the effect of the virgin (TDO) and functionalized (FTDO) nanoparticles was investigated in the presence and absence of compatibilizer. The results demonstrated that the functionalization of TDO had no negative effect on the morphology of the blends, and no aggregation was seen in the blends containing TDO and FTDO. Furthermore, nanoparticles were localized at the interface of PLA and SR. Adding TDO in the PLA/SR blends increased the mechanical properties. The same trend was observed after incorporating the compatibilizer and FTDO.Additionally, a good agreement was seen between the theoretical and experimental mechanical properties values. Moreover, introducing SR diminished the crystallinity of PLA, and further reduction was observed by adding TDO, FTDO, and compatibilizer. Also, the modification of TDO did not affect the crystallinity of the blends. Incorporating 1 and 2 phr TDO to the blends increased the thermal stability while diminishing with 3 phr TDO. In addition, FTDO improved thermal stability. The antibacterial test indicated that the higher nanoparticles content, the better the antibacterial properties.

Surface modification of TiO2 nanoparticles with organic molecules and their biological applications

“…In 2022, Mokhtari Aghdami et al functionalized TiO 2 NPs with APTES to improve the thermal, mechanical, and antibacterial properties of poly(lactic acid)/silicone rubber (PLA/SR) blends, reinforced with APTES-functionalized TiO 2 NPs. 53 In another recent study, Massoumi et al immobilized S -nitroso- N -acetylpenicillamine (SNAP) on TiO 2 NPs to form a NO-releasing TiO 2 NP/SNAP system, for antibacterial applications. For this goal, TiO 2 NPs were first silanized with APTES, and then N -acetyl- d -penicillamine was grafted to them via an amide bond.…”

Poly(vinylidene fluoride)/molybdenum disulfide nanocomposite coatings: Studying the surface properties and corrosion protection

“…Polymers are suitable for many applications nowadays because of their extraordinary properties. [ 1–4 ] As a natural electrochemical phenomenon, corrosion negatively influences the integrity of materials and leads to significant economic losses in different industries. Protective organic coatings are one of the most promising techniques for enhancing the corrosion resistance of metallic substrates.…”

Environmentally friendly polypropylene/poly (trimethylene terephthalate) blend fibers: Resiliency and dyeability

“…17–21 The blending technique is a valuable, versatile, and cost-effective method to prepare new high-performance materials, without the need to synthesize an entirely new polymer. 22–30…”