| Microstructure Evolution in Polymer Latex Coatings for Whole-Cell Biocatalyst Application. | |
| | |
MedLine Citation:
|
PMID: 10419658 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
The microstructure evolution of two poly(vinyl acetate-co-acrylic acid) latex coatings was elucidated by cryogenic scanning electron microscopy (cryo-SEM) and atomic force microscopy. The stages documented are particle suspension, consolidation, deformation, partial coalescence into a coherent film, and rehydration of the latter. Of particular interest is formation of a porous polymeric matrix of desired porosity and permeability of remnant interstices between deformed and partially coalesced particles; the application is to biocatalytic coatings in which viable bacteria are imprisoned in porous latex coatings. Effects of drying condition and time, rehydration behavior of latex, and the presence of glycerol on the microstructure of latex coatings were revealed by time-sectioning and cryofracture techniques of cryo-SEM. Results showed that porosity and permeability can be controlled by choice of drying and rehydration protocols. Evidence showed that glycerol retarded particle deformation, compaction, and coalescence and that substantial amounts of glycerol were expelled to the surface of the coating as drying proceeded. Implications for design of bacteria-laden and bacteria-free coating layers are discussed. Copyright 1999 Academic Press. |
| | |
Authors:
|
Huang; Thiagarajan; Lyngberg; Scriven; Flickinger |
Related Documents
:
|
11296918 - Polymer wall coatings for capillary electrophoresis. 10934738 - Drug release from film-coated chlorpheniramine maleate nonpareil beads: effect of water... 20198068 - Infrared characterization of surfaces and coatings by internal-reflection spectroscopy. 16313918 - The effect of inorganic particles on slot die coating of poly(vinyl alcohol) solutions. 8347958 - Frequency dependence of mr relaxation times. ii. iron oxides. 18606838 - Stability of colistin methanesulfonate in pharmaceutical products and solutions for adm... |
Publication Detail:
|
Type: JOURNAL ARTICLE |
Journal Detail:
|
Title: Journal of colloid and interface science Volume: 215 ISSN: 1095-7103 ISO Abbreviation: J Colloid Interface Sci Publication Date: 1999 Jul |
Date Detail:
|
Created Date: 1999-07-26 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0043125 Medline TA: J Colloid Interface Sci Country: - |
Other Details:
|
Languages: ENG Pagination: 226-243 Citation Subset: - |
Affiliation:
|
Department of Chemical Engineering & Materials Science, University of Minnesota, Minneapolis, Minnesota, 55455 |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Phase Behavior and Salt Partitioning in Two- and Three-Phase Anionic Surfactant Microemulsion System...
Next Document: Microstructure of a Biocatalytic Latex Coating Containing Viable Escherichia coli Cells.