Novel thermo-responsive water-soluble polymers for viscosity switch
AssigneeIndustrial Technology Research Institute
InventorsHsun-Yu Lee, Chih-Hsiang Lin, In-Mau Chen
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Abstract
A thermal responsive, water soluble copolymer is disclosed, which comprises the co-polymerization product of: (a) 0.5˜20 wt % of N-isopropyl acrylamide (NIPAAm); (b) 0.5˜20 wt % of 1-vinyl-2- pyrrolidinone (VPD); (c) 0.01˜10 wt % of acrylic acid (AA); and (d) 80˜90 wt % of acrylamide. The viscosity of.the co-polymerization product is adjustable by temperature. Moreover, phase-separating does not occur in the copolymer while temperature is changing and the structure as well as the fluidity are maintained, therefore, the copolymer of the present invention is suitable for the application of a micro-fluidic chip.
Claims8
A thermal responsive, water-soluble copolymer, which is copolymerized by the following monomers:
- 0.5˜20 wt % of N-isopropyl acrylamide (NIPPAm);
- 0.5˜20 wt % of 1-vinyl-2-pyrrolidinone (VPD);
- 0.01˜10 wt % of acrylic acid (AA);
- and
- 80˜90 wt % of acrylamide.
A thermal responsive, water-soluble copolymer, which is copolymerized by the following monomers:
- 0.5˜20 wt % of N-isopropyl acrylamide (NIPAAm);
- 0.5˜20 wt % of 1-vinyl-2-pyrrolidinone (VPD);
- and
- 80˜90 wt % of acrylamide.
Dependencies are inferred from the claim text.