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Journal Article

High-Temperature Spray-Dried Polymer/Bacteria Microparticles for Electrospinning of Composite Nonwovens

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Rhinow,  Daniel
Department of Structural Biology, Max Planck Institute of Biophysics, Max Planck Society;

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Citation

Reich, S., Kaiser, P., Mafi, M., Schmalz, H., Rhinow, D., Freitag, R., et al. (2019). High-Temperature Spray-Dried Polymer/Bacteria Microparticles for Electrospinning of Composite Nonwovens. Macromolecular Bioscience, 19(3): 1800356. doi:10.1002/mabi.201800356.


Cite as: https://hdl.handle.net/21.11116/0000-0003-2265-5
Abstract
Living Micrococcus luteus (M. luteus) and Escherichia coli (E. coli) are encapsulated in poly(vinyl alcohol), poly(vinylpyrrolidone), hydroxypropyl cellulose, and gelatin by high-temperature spray drying. The challenge is the survival of the bacteria during the standard spray-drying process at temperatures of 150 °C (M. luteus) and 120 °C (E. coli). Raman imaging and transmission electron microscopy indicate encapsulated bacteria in hollow composite microparticles. The versatility of the spray-dried polymer bacteria microparticles is successfully proved by standard polymer solution-processing techniques such as electrospinning, even with harmful solvents, to water-insoluble polyacrylonitrile, polystyrene, poly(methyl methacrylate), and poly(vinyl butyrate) nanofiber nonwovens, which opens numerous new opportunities for novel applications.