Filter media with biodegradable fibers
AssigneeUniversity of Tennessee Research Foundation
InventorsUday Kumar Vasant Vaidya, Ganesh Deka
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Abstract
Filter media comprising cellulose fibers and fibrillated thermoplastic fibers, such as fibrillated polyolefins are described. The filter media can be provided in the form of non-woven fiber mats (e.g., wet-laid non-woven fiber mats) that can be integrated into air filtration devices to enhance their biodegradability. The non-woven fiber mats can be prepared as electrets. Composites comprising multiple layers of the same or different filter media can be prepared. Composites having minimum efficiency reporting value (MERV) ratings of at least 12 or at least 13 are described.
Claims21
A biodegradable filter media comprising cellulose fibers and fibrillated thermoplastic fibers.
A method of preparing a biodegradable filter media, the method comprising:
- (i) providing a fiber mixture, wherein the fiber mixture comprises cellulose fibers and fibrillated thermoplastic fibers;
- (ii) forming a nonwoven mat from the fiber mixture;
- and
- (iii) drying the nonwoven mat, thereby providing the biodegradable filter media.
A biodegradable filter media comprising cellulose fibers, fibrillated thermoplastic fibers, and starch nanoparticles.
Dependencies are inferred from the claim text.