420146 Thermogravimetric Analysis (TGA) of Zinc Nitrate-Doped Polyvinylidene Fluoride Substrate for Sensor Applications

Thursday, November 12, 2015: 1:15 PM
251C (Salt Palace Convention Center)
Anju Gupta, Chemical Engineering, Rochester Institute of Technology, Rochester, NY, Matthew Conrad, Rose-Hulman Institute of Technology, Terre Haute, IN, William B. Euler, Chemistry, University of Rhode Island, Kingston, RI and Mona Alhasani, University of Rhode Island, Kingston, RI

In this work we present the thermogravimetric analysis (TGA) of poly(vinylidene) fluoride (PVDF) films doped with zinc-nitrate for potential sensor applications. PVDF can exist in at least four different conformational crystalline phases. The most readily attained phases are α (nonpolar), β (ferroelectric), and γ (polar). Adding Zn(NO3)2 to a solution of PVDF before spin casting will increase the amount of β phase present in the thin films and induce retention of solvent molecules in the PVDF.
A three-layer system of substrate, polymer, and dye leads to a fluorescence enhancement. We also report the interfacial interactions and PVDF phase on the fluorescence enhancement by comparing the properties of PVDF coated with the fluorescent dye rhodamine 6G (PVDF/Rh6G)  and PVDF-Zn2+/Rh6G films as a function of Zn2+ composition and PVDF phase.

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See more of this Session: Inhomogeneous Polymers
See more of this Group/Topical: Materials Engineering and Sciences Division