Date Approved

9-11-2024

Document Type

Thesis

Degree Name

Master of Science (M.S.)

Department

Chemical Engineering

College

Henry M. Rowan College of Engineering

Advisor

Joseph Stanzione, Ph.D.

Keywords

Bio-Based;Cosmetics;Organogels;Personal Care;Silicone Elastomers;Sustainability

Disciplines

Chemical Engineering | Engineering

Abstract

Silicone elastomers (SE) are a major component in many cosmetic and personal care products, providing excellent spreading properties, leaving a dry, silky feel on the skin. Unfortunately, the manufacturing of silicone is a high energy consuming process, and these products are not biodegradable. Capryloyl/glycerin/sebacic acid (CGS) copolymers are an economical, nontoxic platform for synthesizing bio-based materials with tailored properties. These polyester networks are formed through esterification with water as its only side product. By altering feed ratios and reaction conditions, final products can vary from branched fluids to highly crosslinked elastomers. This thesis investigated controlling the crosslink density of the CGS copolymer network and swelled samples with ether- and ester- based organic solvents to form organogels that mimic the properties of SEs utilized in industry. Gel contents were determined via spectroscopic and thermogravimetric techniques. Mechanical evaluations were also performed to understand the properties of organogels formed under varying reaction conditions. Due to a lack of shearing equipment, an organogel that perfectly matched the properties of SEs was unable to be developed. However, a framework was created for producing organogel materials with the CGS copolymer network, and the influence of specific feedstocks on material properties was identified. Performance was also optimized by testing multiple catalysts to create sustainable ingredient replacements for the cosmetics industry.

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