Date Approved
2019
Degree Type
Open Access Thesis
Degree Name
Master of Science (MS)
Department or School
Engineering Technology
Committee Member
Vijaykumar Mannari, PhD
Committee Member
Donald Snyder, PhD
Committee Member
Bob Lahidji, PhD
Abstract
This thesis explored a series of organic-inorganic hybrid polyurethane oligomers with varying molecular weights and functional groups (acrylate and/or silane) that were cured with a single ultraviolet (UV) trigger but two photo-initiators. Upon UV irradiation, the free-radical initiator initiated a free-radical reaction for acrylate cross-linking, and the photo-latent base initiated a sol-gel reaction for condensation of the silanes. This study explored the cure extent of both reactions by FTIR for acrylates and silanes and a weight-loss method for silanes as a function of functional group concentration and time. The general film properties were also studied. The results showed that the free-radical reaction and the sol-gel reaction took simultaneously upon exposure to UV radiation. The extent of the sol-gel reaction was decreased at the presence of acrylate groups. The film properties, like adhesion of the one containing acrylates and silane groups, were increased compared to the system with only acrylate groups.
Recommended Citation
Yu, Shiyin, "UV-curable organic-inorganic hybrid polyurethane coating" (2019). Master's Theses and Doctoral Dissertations. 998.
https://commons.emich.edu/theses/998