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Abstract
Silver (Ag) ornamented TiO2 semiconducting nanoparticles were synthesized through the sol-gel process to be utilized as nanofillers with photo resin to enhance the mechanical and thermal properties of stereolithography 3D printed objects. The as-prepared Ag-TiO2 nanoparticles (Ag-TNP) were typified and qualified by XRD, XPS, Raman, and FESEM; TEM analysis dissected the morphologies. The enhancement in the tensile and flexural strengths of SLR/Ag-TNP nanocomposites was noted as 60.8% and 71.8%, respectively, at the loading content of 1.0% w/w Ag-TNP within the SLR (stereolithography resin) matrix. Similarly, the thermal conductivity and thermal stability were observed as higher for SLR/Ag-TNP nanocomposites, equated to neat SLR. The nanoindentation investigation shows an excerpt hike in reduced modulus and hardness by the inclusion of Ag-TNP. The resulted thermal analysis discloses that the introduction of Ag-TNP can appreciably augment the glass transition temperature (Tg), and residual char yield of SLR nanocomposites remarkably. Hence, the significant incorporation of as-prepared Ag-TNP can act as effective nanofillers to enhance the thermal and mechanical properties of photo resin.
Highlights
In recent years, Additive or 3D printing technology were noted as remarkable developing democratization of innovation, which guarantees colossal possibilities and has picked up a ton of interests from diverse fields like biomedical science and tissue engineering [1,2,3], printing electronics [4,5], microfluidics [6], and aerospace composites [7,8], etc
The semiconducting low energy bandgap Ag-TiO2 nanoparticles (Ag-Titanium dioxide nanoparticles (TNP)) was synthesized through the sol-gel method and utilized as nanofillers in the stereolithography resin matrix to enhance the thermal and mechanical properties of 3D printing samples
The research study shows that the introduction of Ag-TNP in the SLR matrix can extensively enhance the mechanical and thermal behaviors of 3D printed samples
Summary
Additive or 3D printing technology were noted as remarkable developing democratization of innovation, which guarantees colossal possibilities and has picked up a ton of interests from diverse fields like biomedical science and tissue engineering [1,2,3], printing electronics [4,5], microfluidics [6], and aerospace composites [7,8], etc. The photopolymerization technique acting as a critical mechanism of stereolithography 3D printing technology demonstrates superior performance in the manufacturing of 3D constructions with accuracy, rapid curing, and very micro nanoscale resolution with the presence of ultraviolet (UV) light [12,13]. The photopolymerization techniques show excellent striking, as well as modest approaches in the polymer chemistry nowadays [14]. The SLA technique transforms a multifunctional urethane or acrylic-based monomers and oligomers into an interconnected polymer through propagation reaction, which was initiated by free radicals or cations formed by light illumination [19,20,21]. Most monomers and oligomers are not able to generate initiating free radicals upon light exposure, and it was crucial to run by with some initiators that will assist in initiate polymerization, through a photochemical reaction [22,23]
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