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.
|Commitee:||Lo, Roger C., Moghtadernejad, Sarah|
|School:||California State University, Long Beach|
|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|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be