@article{viswanath_maity_bochinski_clarke_gorga_2016, title={Enhanced Crystallinity of Polymer Nanofibers without Loss of Nanofibrous Morphology via Heterogeneous Photothermal Annealing}, volume={49}, ISSN={["1520-5835"]}, DOI={10.1021/acs.macromol.6b01655}, abstractNote={Poly(ethylene oxide) electrospun nanofibers with a low concentration of embedded gold nanoparticles (AuNP) were subjected to postfabrication annealing via photothermal heating from the nanoparticles. The results, including nanofibrous mat morphology, crystallinity fraction as a function of annealing time and modality, and average crystallite size, were compared with that for conventional heating at the same average temperature. Maximum crystallinity is achieved more quickly under photothermal heating, and higher maximum crystallinity values, approaching the theoretical maxima for an entangled polymer (∼80%), are obtained. Photothermal heating better preserves the unique nanostructured morphology of the nanofibrous mat whereas significant fiber thickening and loss of porosity occur under conventional annealing treatment. With photothermal heating, heat may be predominantly applied within amorphous material within the fiber, which provides energy for the amorphous chains to reorient and then possibly crysta...}, number={24}, journal={MACROMOLECULES}, author={Viswanath, Vidya and Maity, Somsubhra and Bochinski, Jason R. and Clarke, Laura I. and Gorga, Russell E.}, year={2016}, month={Dec}, pages={9484–9492} }
 @article{keene_bourham_viswanath_avci_kotek_2014, title={Characterization of Degradation of Polypropylene Nonwovens Irradiated by gamma-Ray}, volume={131}, ISSN={["1097-4628"]}, DOI={10.1002/app.39917}, abstractNote={ABSTRACT}, number={4}, journal={JOURNAL OF APPLIED POLYMER SCIENCE}, author={Keene, Brandi and Bourham, Mohamed and Viswanath, Vidya and Avci, Huseyin and Kotek, Richard}, year={2014}, month={Feb} }
 @article{viswanath_maity_bochinski_clarke_gorga_2013, title={Thermal Annealing of Polymer Nanocomposites via Photothermal Heating: Effects on Crystallinity and Spherulite Morphology}, volume={46}, ISSN={["1520-5835"]}, DOI={10.1021/ma401855v}, abstractNote={Metal nanoparticles embedded within polymeric systems can act as localized heat sources, facilitating in situ polymer processing. When irradiated with light resonant with the nanoparticle’s surface plasmon resonance (SPR), a nonequilibrium electron distribution is generated which rapidly transfers energy into the surrounding medium, resulting in a temperature increase in the immediate region around the particle. This work compares the utility of such photothermal heating versus traditional heating in gold nanoparticle/poly(ethylene oxide) nanocomposite films, crystallized from solution and the melt, which are annealed at average sample temperatures above the glass transition and below the melting point. For all temperatures, photothermally annealed samples reached maximum crystallinity and maximum spherulite size faster. Percentage crystallinity change under conventional annealing was analyzed using time–temperature superposition (TTS). Comparison of the TTS data with results from photothermal experiments...}, number={21}, journal={MACROMOLECULES}, author={Viswanath, Vidya and Maity, Somsubhra and Bochinski, Jason R. and Clarke, Laura I. and Gorga, Russell E.}, year={2013}, month={Nov}, pages={8596–8607} }