College of Engineering and Polymer Science

Date of Last Revision

2023-05-08 17:14:04


Chemical Engineering

Honors Course


Number of Credits


Degree Name

Bachelor of Science

Date of Expected Graduation

Spring 2023


The purpose of this project was to determine how the polymeric structure and mechanical properties of this elastomer are affected by the ratio between the polydimethylsiloxane macromolecular chains and the crosslinkers. These were determined via tensile and compression testing. Then, spiropyran was added to observe how this fluorescence and crosslinking agent affected the elastomer. Also, the elastomer’s fluorescent and icephobic nature were tested. The elastomers with a higher ratio of crosslinker to macromolecular chain could withstand higher tensile and compressive strains but failed at lower stresses than their counterparts with lower concentrations of crosslinkers. The elastomers were also found to have significantly less surface interactions with water than the hydrogel. Regarding possible applications of SP-PDMS elastomer, its ability to continuously absorb UV rays and maintain its transparency means it could be used in transition sunglasses or as a windshield coating to protect users from harmful radiation. Its hydrophobic properties further lend it to the application as a windshield coating as the elastomer coating would mitigate ice accumulation in winter months and any accumulation would be easier to remove.

Research Sponsor

Jie Zheng

First Reader

Bi-min Zhang Newby

Second Reader

Roya Gitiafroz

Honors Faculty Advisor

Donald Visco Jr.

Proprietary and/or Confidential Information




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