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High‐Temperature Spray‐Dried Polymer/Bacteria Microparticles for Electrospinning of Composite Nonwovens
Author(s) -
Reich Steffen,
Kaiser Patrick,
Mafi Mahsa,
Schmalz Holger,
Rhinow Daniel,
Freitag Ruth,
Greiner Andreas
Publication year - 2019
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201800356
Subject(s) - vinyl alcohol , electrospinning , nanofiber , gelatin , micrococcus luteus , materials science , polymer , chemical engineering , bacterial cellulose , spray drying , polyacrylonitrile , hydroxypropyl cellulose , cellulose , methacrylate , polystyrene , polymer chemistry , chemistry , composite material , organic chemistry , copolymer , escherichia coli , biochemistry , engineering , gene
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.