Materials including polymeric fibers incorporating microcapsules or nanocapsules including an essential oil

Patent metadata

Field	Value
Publication number	US-2019343190-A1
Application number	US-201716337454-A
Country	US
Kind code	A1
Filing date	Sep 28, 2017
Priority date	Sep 30, 2016
Publication date	Nov 14, 2019
Grant date	—

Abstract

The present disclosure provides materials and articles of clothing including a plurality of nanocapsules, each nanocapsule including a polymeric shell surrounding at least one fluid, and a plurality of polymeric fibers co-spun with the plurality of nanocapsules. The nanocapsules can be made by miniemulsion polymerization. The encapsulated at least one fluid can include at least one essential oil. In some embodiments, the materials are deodorizing, antifungal, and/or antibacterial. Methods of manufacturing the materials and articles of clothing are also provided.

First claim

1 . A yarn comprising:
a plurality of nanocapsules, each nanocapsule comprising a polymeric shell surrounding at least one fluid comprising at least one essential oil, wherein the polymeric shell is configured to enable the at least one fluid to diffuse through the polymeric shell; and a plurality of polymeric fibers co-spun with the plurality of nanocapsules.

2 . (canceled)

3 . (canceled)

4 . The yarn of claim 1 , wherein each of the nanocapsules is at least partially embedded in one or more of polymeric fibers.

5 . (canceled)

6 . The yarn of claim 1 , wherein the essential oil comprises lemongrass.

7 . The yarn of claim 1 , wherein each polymeric shell comprises polystyrene.

8 . (canceled)

9 . The yarn of claim 1 , wherein each of the nanocapsules has a diameter in a range of 10 nm to 1.1 μm; 10 nm to 3 μm; 10 nm to 300 nm; or 10 nm to 900 nm.

10 .- 15 . (canceled)

16 . A woven polymeric fiber sheet comprising the yarn of claim 1 .

17 . (canceled)

18 . The polymeric fiber sheet of claim 16 , further comprising:
at least a first layer of fabric adjacent to a first face of the polymeric fiber sheet; and at least a second layer of fabric adjacent to a second face of the polymeric fiber sheet opposite the first face.

19 . (canceled)

20 . The yarn of claim 1 which inhibits the growth and/or activity of a microbe; or is two or more of deodorizing, antifungal, and antibacterial.

21 . (canceled)

22 . A method of manufacturing a material comprising:
providing a fiber-forming liquid including a polymer and a plurality of nanocapsules, each nanocapsule including a fluid encapsulated by a polymeric shell formed using miniemulsion polymerization; and forming a plurality of polymeric fibers co-spun with the plurality of nanocapsules by ejecting or flinging the fiber-forming liquid from a reservoir.

23 .- 39 . (canceled)

40 . An article of clothing comprising the polymeric fiber sheet of claim 18 .

41 . (canceled)

42 . An article of clothing comprising a sheet including:
plurality of nanocapsules, each nanocapsule comprising a polymeric shell surrounding at least one fluid comprising at least one essential oil, wherein the polymeric shell is configured to enable the at least one fluid to diffuse through the polymeric shell; and a plurality of polymeric fibers co-spun with the plurality of nanocapsules.

43 . The article of clothing of claim 42 , wherein each of the nanocapsules has a diameter in a range of 10 nm to 1.1 μm; 10 nm to 3 μm; 10 nm to 300 nm; or 10 nm to 900 nm.

44 .- 48 . (canceled)

49 . The article of clothing of claim 42 , wherein each of the nanocapsules is at least partially embedded in one or more of polymeric fibers.

50 . (canceled)

51 . (canceled)

52 . The article of clothing of claim 42 , wherein the article is configured to maintain at least 10% by weight essential oil relative to nanofiber content after 180 days; or is configured to maintain at least 10% by weight essential oil relative to nanofiber content after 50 washes.

53 . (canceled)

54 . The article of clothing of claim 42 , wherein each polymeric shell comprises polystyrene.

55 . (canceled)

56 . The article of clothing of claim 42 , wherein the article inhibits the growth and/or activity of a microbe.

57 . The article of clothing of claim 42 , further comprising:
at least a first layer of fabric adjacent to a first face of the sheet; and at least a second layer of fabric adjacent to a second face of the sheet.

58 . (canceled)

Assignees

• Harvard College

Inventors

• Ogunbiyi Elizabeth Olayinka
• Parker Kevin Kit

Classifications

• B32B5/024

  Woven fabric · CPC title

• B32B2262/04

  Cellulosic plastic fibres, e.g. rayon · CPC title

• B32B2307/758

  Odour absorbent · CPC title

• B32B2307/7145

  Rot proof, resistant to bacteria, mildew, mould, fungi · CPC title

• B32B2262/0223

  Vinyl resin fibres · CPC title