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Title: Temperature sensitive surfaces and methods of making same

Patent ·
OSTI ID:874716
 [1];  [2];  [2]
  1. Richland, WA
  2. Pasco, WA
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Poly-n-isopropylacrylamide surface coatings demonstrate the useful property of being able to switch charateristics depending upon temperature. More specifically, these coatings switch from being hydrophilic at low temperature to hydrophobic at high temperature. Research has been conducted for many years to better characterize and control the properties of temperature sensitive coatings. The present invention provides novel temperature sensitive coatings on articles and novel methods of making temperature sensitive coatings that are disposed on the surfaces of various articles. These novel coatings contain the reaction products of n-isopropylacrylamide and are characterized by their properties such as advancing contact angles. Numerous other characteristics such as coating thickness, surface roughness, and hydrophilic-to-hydrophobic transition temperatures are also described. The present invention includes articles having temperature-sensitve coatings with improved properties as well as improved methods for forming temperature sensitive coatings.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC06-76RL01830
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Number(s):
6,447,897
OSTI ID:
874716
Country of Publication:
United States
Language:
English

References (8)

Graft Architectural Effects on Thermoresponsive Wettability Changes of Poly(N-isopropylacrylamide)-Modified Surfaces journal July 1998
Silane Coupling Agents for Photografting of Vinyl Monomer. Preparation and Properties of (N,N-Diethylamino)dithiocarbamoylpropyl(trimethoxy)silane journal July 1992
A spectrophotometric assay for soluble and immobilized N-hydroxysuccinimide esters journal November 1982
Preparation of composite-crosslinked poly(N-isopropylacrylamide) gel layer and characteristics of reverse hydrophilic-hydrophobic surface journal April 1999
Reversible Surface Properties of Glass Plate and Capillary Tube Grafted by Photopolymerization of N -Isopropylacrylamide journal November 1998
Mechanism of cell detachment from temperature-modulated, hydrophilic-hydrophobic polymer surfaces journal March 1995
Silane coupling agent having dithiocarbamate group for photografting of sodium styrene sulfonate on glass surface journal July 1993
Temperature-responsive poly(N-isopropylacrylamide) as a modulator for alteration of hydrophilic/hydrophobic surface properties to control activation/inactivation of platelets journal September 1995

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temperature
sensitive
surfaces
methods
poly-n-isopropylacrylamide
surface
coatings
demonstrate
useful
property
switch
charateristics
depending
specifically
hydrophilic
hydrophobic
conducted
characterize
control
properties
provides
novel
articles
disposed
contain
reaction
products
n-isopropylacrylamide
characterized
advancing
contact
angles
numerous
characteristics
coating
thickness
roughness
hydrophilic-to-hydrophobic
transition
temperatures
described
temperature-sensitve
improved
forming
reaction product
novel method
temperature sensitive
surface coating
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