ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Textile fabrics of cotton, wool, nylon, polyester, acrylic, and polyolefin pretreated with aqueous dispersions of photosensitive metal oxides (antimony, tin, titanium, and zinc oxide) were exposed to methyl acrylate vapors with simultaneous ultraviolet irradiation (〉3100 Å) for up to 2hr. The metal oxides acted either as effective photosensitizers, causing increased polymer grafting on the fiber surface, or as photoabsorbers causing a net decrease in grafting compared to unsensitized photografting. Metal oxide-induced grafting occurred more readily on hydrophilic fibers and was accompanied by less homopolymer formation, in comparison to grafting on more hydrophobic fibers. Antimony and tin oxides were more effective on hydrophilic fibers, while zinc oxide was more effective on hydrophobic fibers. Titanium dioxide was essentially ineffective as a photosensitizer. The sensitized grafting process was studied in relationship to irradiation and monomer flow time, the degree of homopolymer formation accompanying grafting, the nature of the metal oxide and polymer graft on the fiber surface, and the reflectance characteristics of the metal oxide-treated fabrics.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1975.070190813
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