Each year there are emerging new or modified additive manufacturing also recognized as 3D printing technologies and equipment for them, same goes for feedstocks. While regarding feedstocks mostly there are improvements of existing filaments and resins based on petroleum polymers and some bio-based ones primarily for bioprinting, almost entirely overlooked is opportunity of creating bio-based lignocellulosic nanocomposites feedstocks that would be adjustable of specific requirements for each application including but not limited to simple prototyping.<br/>Lignocellulosic nanoparticles each gives composite material increased set of properties, elevated plasticity, endurance of rigidity, improved mechanical performance overall, etc. and all of them are biodegradable, which in these environment awareness times is extremely important. Even more so, by creating hybrid nanoparticle composites, performance could be improved even more, much like it is done in nature were, for example, hemicellulose serves as binder between lignin and cellulose.<br/>Introducing those lignocellulosic nanoparticles in bio-based polymer matrix from vegetable oils could lead to almost fully bio-based new feedstock for 3D printing, that would be not only biodegradable but possibly even with wood-mimic properties, simultaneity tackling issue of deforestation.<br/>This report contains preparation of the vegetable oil-based polymer lignocellulosic (lignin, hemicellulose, nanofibrils and nanocrystals of cellulose) hybrid nanocomposite resins for UV-assisted additive manufacturing as well as testing their printing, mechanical and thermal performance. Ability to control performance was proven by investigating performance of resins with same components but different contents. Measurements performed showed that increase of thermomechanical performance is mainly dependent on content of the nanocrystalline and nanofibrilated cellulose contents, while morphology observations showed that hemicellulose is responsible for nanoscale structure control.<br/>

UV-assisted additive manufactoring of lignocellulosic nanomaterials

ACS Fall 2020 Virtual Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.