@article{castillo_dickey_gorman_genzer_efimenko_2021, title={Deposition of silicate coatings on poly(ethylene terephthalate) for improved scratch and solvent resistance}, volume={10}, ISSN={["1097-4628"]}, url={https://doi.org/10.1002/app.51800}, DOI={10.1002/app.51800}, abstractNote={AbstractThe surface of poly(ethylene terephthalate) (PET) films crystallizes when exposed to a broad class of organic solvents (protic polar, aprotic polar, and non‐polar). This phenomenon leads to irreversible changes in transparency and mechanical properties. It also limits PET films and coatings in applications including electronics, medicine, packaging, and construction. This work describes a method to impart solvent resistance to the PET surface by depositing a silicate film. This coating enables many post‐functionalization options, including those that tune wettability or impart antifouling characteristics to the parent PET surface. It also endows PET surface resistance to organic solvent exposure without affecting the overall mechanical and optical properties of the PET. Additionally, the silicate layer improves the scratch resistance of PET surfaces.}, journal={JOURNAL OF APPLIED POLYMER SCIENCE}, publisher={Wiley}, author={Castillo, Gilbert A. and Dickey, Michael D. and Gorman, Christopher B. and Genzer, Jan and Efimenko, Kirill}, year={2021}, month={Oct} }
 @article{castillo_wilson_efimenko_dickey_gorman_genzer_2016, title={Amidation of Polyesters Is Slow in Nonaqueous Solvents: Efficient Amidation of Poly(ethylene terephthalate) with 3-Aminopropyltriethoxysilane in Water for Generating Multifunctional Surfaces}, volume={8}, ISSN={1944-8244 1944-8252}, url={http://dx.doi.org/10.1021/ACSAMI.6B12155}, DOI={10.1021/acsami.6b12155}, abstractNote={This paper describes surface functionalization of poly(ethylene terephthalate) (PET) films by transamidation of the ester groups with primary amines. The use of water as a solvent improves tremendously the reaction rate and yield compared to conventionally used alcohols. In this study, PET films were exposed to an aqueous solution of 3-aminopropyltriethoxysilane (APTES), which resulted in ester-to-amide reactions on the surface of the film. Hydrolysis of the resulting ethoxy moieties in APTES creates hydroxyl groups that can be used as anchoring points for further modification of PET films. This scheme offers an alternative approach to modify polyesters using water as the solvent.}, number={51}, journal={ACS Applied Materials & Interfaces}, publisher={American Chemical Society (ACS)}, author={Castillo, Gilbert A. and Wilson, Lance and Efimenko, Kirill and Dickey, Michael D. and Gorman, Christopher B. and Genzer, Jan}, year={2016}, month={Dec}, pages={35641–35649} }