Fiber comprising thermoplastic elastomer and silica nanoparticle, stretchable hydrophobic fiber article prepared therewith, and method for preparing the same

Patent metadata

Field	Value
Publication number	US-11713543-B2
Application number	US-202017006337-A
Country	US
Kind code	B2
Filing date	Aug 28, 2020
Priority date	Aug 30, 2019
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

The present disclosure relates to a fiber for manufacturing a stretchable hydrophobic fiber article, the fiber including silica nanoparticles which are surface-modified such that the silica nanoparticles include a hydrocarbon chain, and a styrene-based thermoplastic elastomer, a stretchable hydrophobic fiber article manufactured therefrom, and a manufacturing method thereof. A fiber and a fiber article according to the present disclosure may have high hydrophobicity, preferably both superhydrophobicity and elasticity. Further, as the fiber and fiber article have excellent mechanical stability and chemical durability, the fiber and fiber article may stably exhibit the aforementioned high hydrophobicity and elasticity even under the harsh conditions.

First claim

What is claimed is:

1. A fiber for manufacturing a stretchable and superhydrophobic fiber article, the fiber comprising silica nanoparticles which are surface-modified such that the silica nanoparticles include a hydrocarbon chain, and a styrene-based thermoplastic elastomer,
wherein at least some of the silica nanoparticles are included in the fiber, the surface is treated to comprise a fluoroalkyl group, and
wherein the article has a contact angle of more than 150 degrees and a longitudinal sliding angle of less than 10 degrees with respect to any hydrophilic flat surface, and the contact angle and sliding angle are within the aforementioned numerical value ranges even under 500% strain or more.

2. The fiber for manufacturing a stretchable and superhydrophobic fiber article of claim 1 , wherein the styrene-based thermoplastic elastomer is a linear styrene-based block copolymer.

3. The fiber for manufacturing a stretchable and superhydrophobic fiber article of claim 1 , wherein the hydrocarbon chain is a linear or branched aliphatic hydrocarbon chain having 1 to 30 carbon atoms.

4. A stretchable and superhydrophobic fiber article comprising at least two of the fiber according to claim 1 .

Assignees

• Univ Soonchunhyang Ind Acad Coop Found

Inventors

• Im Jung Kyun
• Lim Jong-Min
• Lee Da Eun
• Yang Hye Jin
• Choi Eun Young
• Murthy Akula S N
• Singh Tejinder

Classifications

• D06M11/79 Primary

  with silicon dioxide, silicic acids or their salts · CPC title

• C08K3/36

  Silica · CPC title

• C08K5/02

  Halogenated hydrocarbons {(C08K5/0091 takes precedence)} · CPC title

• C08L25/06

  Polystyrene · CPC title

• D01D5/0038

  the fibre formed by solvent evaporation, i.e. dry electro-spinning · CPC title