Source: https://patents.google.com/patent/US10000605B2/en
Timestamp: 2019-08-18 06:22:06
Document Index: 111207577

Matched Legal Cases: ['application No. 201510131814', 'application No. 201180007957', 'application No. 201380022758', 'application No. 11', 'application No. 13760829', 'application No. 137', 'application No. 2010', 'application No. 2010', 'application No. 2015', 'Application No. 200480010203', 'Application No. 200480010203']

US10000605B2 - Smart polymer materials with excess reactive molecules - Google Patents
US10000605B2
US10000605B2 US14/385,403 US201314385403A US10000605B2 US 10000605 B2 US10000605 B2 US 10000605B2 US 201314385403 A US201314385403 A US 201314385403A US 10000605 B2 US10000605 B2 US 10000605B2
US14/385,403
US20150094448A1 (en
2013-03-13 Application filed by University of Arizona, MEDIPACS Inc filed Critical University of Arizona
2013-03-13 Priority to PCT/US2013/031062 priority patent/WO2013138524A1/en
2013-03-13 Priority to US14/385,403 priority patent/US10000605B2/en
2014-11-04 Assigned to MEDIPACS, INC. reassignment MEDIPACS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BANISTER, MARK, GERONOV, Yordan
2014-11-04 Assigned to THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA reassignment THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MCGRATH, DOMINIC
2015-04-02 Publication of US20150094448A1 publication Critical patent/US20150094448A1/en
2018-06-19 Publication of US10000605B2 publication Critical patent/US10000605B2/en
This invention was made with Government support under National Science Foundation under TIP STTR Grant No. 0848528. Therefore, the United States Government may have certain rights in this invention.
P=(P mix +P ion)−P elast Equation I
During the water electrolysis from the applied current, localized pH gradients are generated near both of the electrodes. At low pH, nearby the anode, the protons enter the matrix, making positively charged (—NH3 +), this disturbs the electro-neutrality of the polymer gel. To balance the charge, anions enter the polymer gel matrix along with the solvent (FIG. 2—the current route, which shows hydration and electrolytic route to gel expansion with sodium acetate. It is important to note that a different electrolyte such as sodium bicarbonate will produce negative electrostatic force repulsion). This causes increased swelling, added to this a large amount of ionic repulsion occurs at a higher concentration of NH3 + ions, thereby physically forcing the gel matrix to open and swell allowing an increase in water to water bonding. The epoxy-amine polymer gel contraction or expulsion of fluid occurs at higher pH, in the vicinity of the cathode a reversible process takes place where the hydroxyl ions are created, and the gel shrinks. Simply explained the swelling/shrinking of these epoxy-amine gel actuators works by changing the pH concentration of the solution. This is determined by the electrolyte (sodium acetate), current charge, time and polarity of the electrode.
Elastic Fracture Strain
modulus Strength to
SI. No Gel Sample (MPa) (MPa) Break
1 Base 1.31 0.3286 0.26
2 Base + 10% XTJ elastomer 0.999 no no
3 X2 0.664 no no
4 SP-012 1.74 0.383 0.219
8 0.1802 DAB-8 8.53 1.905 0.281
13 00901 DAB-16 7.73 1.508 0.261
18 01802 PAMAM-8 6.1 1.834 0.343
19 10% XTJ + 0.0902 2.84 0.6069 0.238
23 00901 PAMAM-16 9.059 1.878 0.23
24 10% XTJ + 4.14 1.006 0.253
25 0.361 SP-012 2.89 0.26 0.10
28 1.441 SP-012 11.37 1.71 0.18
29 PolyEDGE + JT-403 + 6.34 no no
0.476Ethyleneimine-1300 + break break
32 PolyEDGE + 2.84 no break no break
33 PolyEDGE + JT-403 + 3.40 no break no break
G=m d /m*·100%
Q=1+ρgel(m h /m d*·ρH2O−1/ρH2O)*·100% Equation V
Formulation IR values (in cm−1)
Polymerized gel 3434, 2878  1650, 1361, 1109, 947
JT-403 + HP-16 + H2O 3393, 2920, 2850, 1646, 1380, 1091
JT-403 + HP-32 + H2O 3386, 2921, 2853, 1646, 1380, 1091
Poly EDGE + HP-16 + H2O 3422, 2920, 2854, 1730, 1645, 1354, 1247, 1108
Poly EDGE + HP-32 + H2O 3418, 2920, 2855, 1730, 1647, 1353, 1248, 1106
H=(W t −W 0)/W 0 Equation VI
1. A three-dimensional smart polymer matrix gel comprising linear polymer chain structures, branched polymer chain structures, reactive NH groups, reactive NH2 groups, and reactive OH groups; wherein the three dimensional smart polymer matrix gel is formed by linking an epoxy reactant and an amine polymer reactant; wherein the epoxy reactant is at least one of polyethylene glycol diglycidyl ether and polypropylene glycol diglycidyl ether; wherein the amine polymer reactant comprises a branched polyether amine represented by the following chemical structure:
wherein the reactive NH groups, NH2 groups, and OH groups are available for further chemical reaction, and the reactive NH groups and OH groups are present in a predetermined ratio;
wherein the three-dimensional smart polymer matrix gel has degree of gelation below 98%;
wherein the three dimensional smart polymer matrix gel is hydrophilic and non-soluble to a solvent or electrolyte; and
wherein the linear polymer chain structures have random chain lengths within a range and determine the maximum swelling size of the polymer matrix gel.
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