Co-continuous interconnecting channel morphology polymer having controlled gas transmission rate through the polymer
DCFirst Claim
1. A method comprising the control of gas transmission through a composition by forming a composition having a co-continuous interconnecting channel morphology comprising at least three components,(a) wherein component A is selected from the group of polymers that are semicrystalline polymers and amorphous polymers, wherein the amorphous polymers have a shear modulus greater than about 8 MPa;
- (b) wherein component B is a polymer;
(c) wherein components A and B are immiscible within each other and, if components A and B react after mixing, components A and B are immiscible prior to reaction;
(d) wherein component C is a particle;
(e) wherein the volume fraction of component A represents at least about 50% by volume of the total volume of components A, B and C;
(f) wherein the preferential affinity between component B and component C is greater than between component A and component C;
(g) wherein at least two phases are formed, one phase is composed of a majority of component A, and the second phase is composed of a majority of component B and a majority of component C; and
(h) wherein the two phases form the co-continuous interconnecting channel morphology.
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Abstract
The present invention includes a composition having a co-continuous interconnecting channel morphology for controlled gas transmission rate. These co-continuous interconnecting channels are predominately occupied with a polymer and particles that control the percolation through the composition. The polymer composition may be used to form a desired shaped article such as plug type inserts and liners for closed containers, or it may be formed into a film, sheet, bead or pellet.
119 Citations
14 Claims
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1. A method comprising the control of gas transmission through a composition by forming a composition having a co-continuous interconnecting channel morphology comprising at least three components,
(a) wherein component A is selected from the group of polymers that are semicrystalline polymers and amorphous polymers, wherein the amorphous polymers have a shear modulus greater than about 8 MPa; -
(b) wherein component B is a polymer;
(c) wherein components A and B are immiscible within each other and, if components A and B react after mixing, components A and B are immiscible prior to reaction;
(d) wherein component C is a particle;
(e) wherein the volume fraction of component A represents at least about 50% by volume of the total volume of components A, B and C;
(f) wherein the preferential affinity between component B and component C is greater than between component A and component C;
(g) wherein at least two phases are formed, one phase is composed of a majority of component A, and the second phase is composed of a majority of component B and a majority of component C; and
(h) wherein the two phases form the co-continuous interconnecting channel morphology. - View Dependent Claims (5, 7, 9, 12)
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2. A method comprising the control of gas transmission through a composition by forming a composition having co-continuous interconnecting channel morphology comprising at least five components,
(a) wherein component A is selected from the group of polymers that are semierystalline polymers and amorphous polymers, wherein the amorphous polymers have a shear modulus greater than about 8 MPa; -
(b) component B and B′
are polymers;
(c) components A, B and B′
are immiscible within each other;
(d) components C and C′
are particles;
(e) the volume fraction of component A represents at least about 34% by volume of the total volume of components A, B, B′
, C and C′
;
(f) the preferential affinity between components B and C is greater than either between components A and C and between components B′ and
C;
(g) the preferential affinity between components B′ and
C′
is greater than either between components A and C′ and
between components B and C′
;
(h) at least three phases are formed, one phase is composed of a majority of component A, the second phase is composed of a majority of component B and a majority of component C, and the third phase is composed of a majority of components B′ and
a majority of components C′
; and
(i) at least three phases form the co-continuous interconnecting channel morphology. - View Dependent Claims (6, 8, 10, 13)
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3. A composition having a co-continuous interconnecting channel morphology comprising at least three components:
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(a) wherein component A is a thermoplastic;
(b) wherein component B is a polyglycol;
(c) wherein components A and B are immiscible within each other and, if components A and B react after mixing, components A and B are immiscible prior to reaction;
(d) wherein component C is a particle;
(e) wherein the volume fraction of component A represents at least about 50% by volume of the total volume of components A, B and C;
(f) wherein the preferential affinity between component B and component C is greater than between component A and component C;
(g) wherein at least two phases are formed, one phase is composed of a majority of component A, and the second phase is composed of a majority of component B and a majority of component C; and
(h) wherein the two phases form the co-continuous interconnecting channel morphology and wherein the composition has an increased gas transmission rate compared to component A. - View Dependent Claims (4, 11, 14)
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Specification