Dissertation/Thesis Abstract

Solvent-Free Graphene and Edge-Oxidized Graphene Oxide Acrylic Nanocomposites Via Digital Light Processing
by Vazquez-Morales, Manuel, M.Sc., California State University, Long Beach, 2020, 69; 27834220
Abstract (Summary)

Digital light processing (DLP) and stereolithography (SL) are two versatile additive manufacturing technologies for rapid prototyping applications. Even though recent technological advances have made SL and DLP cheaper and more accessible, they still have numerous shortcomings. Specifically, the limited amount of materials makes them unsuitable for many advanced applications. In addition, the pool of materials available lack strong mechanical properties and, therefore, require the addition of fillers.

Graphene and graphitic materials have gained significant attention due to the extraordinary properties they possess. However, the successful introduction in polymeric matrices entails difficult challenges to overcome. Notably, their dispersion requires the addition of solvents, surfactants, and other expensive and inconvenient materials.

The objective of this thesis was to introduce graphene and edge-oxidized graphene oxide into an acrylic resin via in-situ polymerization to create nanocomposites with superior mechanical properties using a DLP-printer. In addition, a detailed study on the layer exposure time, filler wt. % load, graphene particle size, and filler effects on mechanical properties was performed. Finally, a quick method to identify suitable monomers for graphene dispersions was presented.

The results showed significant increases in tensile strength and stiffness at large layer exposure times in the nanocomposites created. Additionally, the quick method to identify suitable monomers for graphene dispersions showed favorable results that concur with the theory presented.

Indexing (document details)
Advisor: Barjasteh, Ehsan
Commitee: Lo, Roger C., Moghtadernejad, Sarah
School: California State University, Long Beach
Department: Chemical Engineering
School Location: United States -- California
Source: MAI 82/3(E), Masters Abstracts International
Subjects: Chemical engineering, Materials science, Nanotechnology, Polymer chemistry
Keywords: Digital light processing, Nanocomposites, Graphene oxide
Publication Number: 27834220
ISBN: 9798664789799
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