NASA NTRS · 19900000063
Filling Porous Microspheres With Magnetic Material
Abstract
New process produces magnetic microspheres with controllable sizes, compositions, and properties for use in medical diagnostic tests, biological research, and chemical processes. Paramagnetic microspheres also made with process. Porous plastic microspheres prepared by polymerization of monomer in diluent by cross-linking agent. When diluent removed, it leaves tiny pores throughout polymerized spheres. Size and distribution of pores determined by amount and type of diluent and cross-linking agent.
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Chang, Manchium, Colvin, Michael S.. 1990-02-01. Filling Porous Microspheres With Magnetic Material. https://ntrs.nasa.gov/citations/19900000063
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