Term of Award

Fall 2024

Degree Name

Master of Science in Applied Engineering (M.S.A.E.)

Document Type and Release Option

Thesis (open access)

Copyright Statement / License for Reuse

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.

Department

Department of Manufacturing Engineering

Committee Chair

Kamran Kardel

Committee Member 1

Rafael Quirino

Committee Member 2

Haijun Gong

Abstract

The increase in the demand for additively manufactured parts and the drive towards a sustainable economy with less environmental pollution has necessitated the need for renewable materials for use in 3D printing. This study shows the development and characterization of vegetable oil based, acrylated resins for 3D printing. Bio-based 3D resins were formulated using bio-based oils with a minimum of 70% bio-based content and were ready to be polymerized using the stereolithography (SLA) 3D printing process. Two distinct vegetable oils were used to develop biobased photopolymers. Biobased acrylated epoxidized photopolymers were successfully developed that have good mechanical and chemical properties. Acrylated linseed oil, acrylated soybean oil and a 50% - 50% blend of both acrylated oils were used in printing. Increasing the double bond in the vegetable oil, increased the tensile strength of the 3D parts printed as the vegetable oil with a high number of double bonds showed high tensile strength. The specimens were prepared according to ASTM standard and the printed parts were used for three different characterization and mechanical testing: Tensile Testing, Compression Testing, and Hardness Testing. In this study, the parts printed with acrylated linseed oil showed considerable mechanical properties when analyzed with respect to tensile strength, compression strength and hardness test over the other two vegetable oils. The Young's modulus (E) values for the AELO, AESO, and their blend AELO.AESO were 111.93 ± 2.98 MPa, 9.94 ± 1.81 MPa, and 29.95 ± 2.32 MPa, respectively. Such values reflect the stiffness of the materials, in which AELO exhibits much greater stiffness than AESO and their blend. This research provided more insight into the development of bio-based resin for stereolithography 3D printing. The findings demonstrate the potential of bio-based photopolymers to replace conventional materials and advance the practical application of renewable resources in manufacturing.

Research Data and Supplementary Material

No

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