Polymer films

• US 6,740,409 B1
• Filed: 11/15/2000
• Issued: 05/25/2004
• Est. Priority Date: 11/15/2000
• Status: Expired due to Fees

• Current Assignee: Board of Trustees of The University of Illinois
• Original Assignee: Board of Trustees of The University of Illinois
• Inventors: Granick, Steve, Sukhishvili, Svetlana A.
• Primary Examiner(s): ZACHARIA, RAMSEY E
• Application Number:
  US09/715,870
• Time in Patent Office: 1,287 Days
• Field of Search: 428/411.1, 428/420, 428/500, 428/522, 428/474.4, 428/475.8, 428/476.3, 428/480, 428/524, 428/532
• US Class Current: 428/411.1
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/28 comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31725 Of polyamide
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31942 Of aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31971 Of carbohydrate

Abstract

A film contains a first polymer having a plurality of hydrogen bond donating moieties, and a second polymer having a plurality of hydrogen bond accepting moieties. The second polymer is hydrogen bonded to the first polymer.

Claims

1. A film, comprising:

a first layer, comprising a first polymer comprising a plurality of hydrogen bond donating moleties selected from the group consisting of O—

H, N—

H, P—

H and S—

H; and

a second layer, comprising a second polymer comprising a plurality of hydrogen bond accepting moieties selected from the groups consisting of C═

O, O—

H, N—

H, C—

F, P═

O and C≡

N;

wherein the first and second polymers are each soluble in water;

the film does not contain a polymer layer comprising a plurality of permanently electrostatically charged groups when the film is stable; and

said first polymer or said second polymer comprises carboxylic acid groups.

2. The film of claim 1, wherein said first polymer and said second polymer are bonded together through hydrogen bonds.

3. A surface, coated with the film of claim 1.

4. The film of claim 1, further comprising an agent.

5. The film of claim 4, wherein said agent is a bioactive agent.

6. The film of claim 1, wherein the first polymer is selected from the group consisting of polycarboxylic acids, polynucleotides, polymers of vinylic nucleic acids, polyamino acids, polyalcohols, polyamines, and polysaccharides.

7. The film of claim 6, wherein the second polymer is selected from the group consisting of polynucleotides, polyalcohols, polyethers, polyketones, polyaldehydes, polyacrylamides, polyamines, polyesters, and polysaccharides.

8. The film of claim 1, wherein the second polymer is selected from the group consisting of polynucleotides, polyalcohols, polyethers, polyketones, polyaldehydes, polyacrylamides, polyamines, polyesters, and polysaccharides.

9. The film of claim 1, wherein the first polymer comprises a polycarboxylic acid, and the second polymer is selected from the group consisting of poly(ethylene oxide);

poly(1,2-dimethoxyethylene);

poly(vinylmethyl ether);

poly(N-vinyl-2-pyrrolidon);

poly(vinyl alcohol);

polyacrylamide;

poly(N-isopropylacrylamide);

(CH₂(NCOCH₃)CH₂)_x; and

a vinyl polymer comprising crown ether groups.

10. The film of claim 1, wherein the first polymer is selected from the group consisting of polyacrylic acid, polymethacrylic acid and polyglutamic acid.

11. The film of claim 10, wherein the second polymer is selected from the group consisting of poly(ethylene oxide), poly(vinyl alcohol) and poly(vinyl-pyrrolidone).