Method of modifying substrate surface

Patent metadata

Field	Value
Publication number	US-9758631-B2
Application number	US-201514853672-A
Country	US
Kind code	B2
Filing date	Sep 14, 2015
Priority date	Jun 12, 2015
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A method of modifying substrate surface includes: performing an O 2 plasma treatment on a substrate including polydimethylsiloxane (PDMS); coating hydrophilic UV curing coating uniformly on the substrate; disposing the substrate into an oxygen-free environment; and exposing to an UV light to cure the hydrophilic UV curing coating. The method of modifying substrate surface may greatly enhance the hydrophilicity and the stability of the PDMS substrate.

First claim

What is claimed is:

1. A method of modifying substrate surface, comprising:
performing an O 2 plasma treatment on a substrate including polydimethylsiloxane (PDMS) in an non-solidified state, the substrate is in a semi-solidified state after the O 2 plasma treatment;
coating a hydrophilic UV curing coating uniformly on a surface of the substrate in the semi-solidified state;
disposing the substrate into an oxygen-free environment; and
exposing the surface of the substrate to an UV light at 60-70° C. to solidify the hydrophilic UV curing coating and the substrate at the same time.

2. The method of claim 1 , wherein the O 2 plasma treatment is performed by a power of 30-90 watt.

3. The method of claim 2 , wherein the O 2 plasma treatment is performed for 15-100 seconds.

4. The method of claim 1 , wherein the hydrophilic UV curing coating is selected from the group consisting of dioxetanedione, vinyl ether, acrylic resin, phenol formaldehyde resin, polymerized siloxanes, cyclic olefin copolymer, polyimide, polyhydroxystyrene, polyurethane and benzocyclobutene.

5. The method of claim 4 , wherein the acrylic resin further comprises epoxy acrylate, polyurethane-acrylate, polyether acrylate, polyester acrylate, and polymethylmethacrylate.

6. The method of claim 4 , wherein the phenol formaldehyde resin comprises phenolic epoxy resin.

7. The method of claim 1 , further comprising aerating an inert gas into a chamber to form the oxygen-free environment.

8. The method of claim 7 , further comprising removing gas from the chamber to form a vacuum environment.

9. The method of claim 1 , wherein a time period that exposing the surface of the substrate to the UV light source is 30-60 minutes.

Assignees

• Nat Univ Tsing Hua

Inventors

• Lee Gwo-Bin
• Ma Yu-Dong

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C08J3/24

  Crosslinking, e.g. vulcanising, of macromolecules (mechanical aspects B29C35/00; crosslinking agents C08K) · CPC title

• B05D3/144

  of polymeric substrates · CPC title

• C08J2383/04

  Polysiloxanes · CPC title

• B05D3/0493

  using vacuum · CPC title