Material compositions for reinforcing ionic polymer composites

a technology of ionic polymer and composites, which is applied in the field of preparation of ionic polymer compositions, can solve the problems of not teaching the use of soy protein and soy carbohydrate in ionic, patent also fails to teach the formation of intimate ionic complexes in aqueous phase with neutralized carboxylic acid functional groups, and achieves improved functional properties and high elastic modulus.

Inactive Publication Date: 2006-05-04
US SEC AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] I have now discovered a novel composition of matter comprising an ionic polymer and a protein and carbohydrate-containing vegetable material component. Of particular interest as the vegetable material component is a soy fraction, such as soy spent flakes, defatted soy flour, or soy protein concentrate. The resultant composites have a significantly higher elastic modulus when compared with base polymer, and also have improved functional properties in comparison with composites of the base polymer and carbon black.

Problems solved by technology

However, the patent does not teach the use of soya bean meal in ionic polymers such as carboxylic acid or sulfonic acid modified rubber for modulus reinforcement.
The patent does not teach the use of a combination of soy protein and soy carbohydrate to achieve synergistic reinforcement effects in a polymer matrix.
The patent also fails to teach the formation of intimate ionic complexes in aqueous phase with neutralized carboxylic acid functional groups, where the interaction between the reinforcing phase and the polymer matrix is an ionic interaction instead of covalent bonding.
However, polylactide is not an ionic polymer because it does not contain ionic functional groups along the polymer backbone for it to be water dispersible.
Therefore, polylactide cannot be used to form a complex with soy products in alkali water solution and is not suitable as a polymer matrix in the present invention.
These patents do not teach the formation of non-reactive ionic complex to enhance composite modulus.

Method used

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  • Material compositions for reinforcing ionic polymer composites
  • Material compositions for reinforcing ionic polymer composites
  • Material compositions for reinforcing ionic polymer composites

Examples

Experimental program
Comparison scheme
Effect test

example 1

Preparation of 10% Soy Spent Flakes Composite.

[0051] Soy spent flakes were obtained by dispersing 154 gm of defatted soy flour (Nutrisoy 7B, ADM) in 810 gm of water and cooking at pH 10 and 45° C. for 1 hour. The resulting dispersion was then centrifuged at 3000 rpm and 15° C. for 10 minutes. Soy protein dispersion was removed and the spent flakes were washed with water and centrifuged again to obtain spent flakes with a solids content of 12.2%. A 131.1 gm sample of a 7.6% aqueous dispersion of spent flakes was mixed with 177.3 gm of 50.7% carboxylated styrene-butadiene latex (CP620NA, Dow), and the pH was adjusted to 9. The dispersion was first dried at 75° C. to a moisture content of 3-4% and then dried at 140° C. to a moisture content of less than 1%. After drying, the shear elastic moduli from −40° C. to 140° C. were measured by a dynamic mechanical method at 1 rad / s and 0.05% strain (Rheometric ARES). The effect of dynamic strain is measured at 1 Hz. The stress-strain propert...

example 2

Preparation of 15% Soy Spent Flakes Composite.

[0052] Soy spent flakes were obtained by dispersing 250 gm of defatted soy flour (Nutrisoy 7B, ADM) in 1300 gm of water and cooking at pH 10 and 45° C. for 1 hour. The resulting dispersion was then centrifuged at 3000 rpm and 15° C. for 10 minutes. Soy protein dispersion was removed and the spent flakes were washed with water and centrifuged again to obtain spent flakes with a solids content of 9.4%. A 209.7 gm sample of a 7.2% aqueous dispersion of spent flakes was mixed with 167.5 gm of 50.7% carboxylated styrene-butadiene latex (CP620NA, Dow) and the pH adjusted to 9. The dispersion was dried in the same manner as that in Example 1. After drying, the mechanical properties were measured as described in Example 1. The mechanical properties of this composite are shown in FIG. 1B, FIG. 2, and FIG. 5B.

example 3

Preparation of 20% Soy Spent Flakes Composite.

[0053] Soy spent flakes were obtained by dispersing 154 gm of defatted soy flour (Nutrisoy® 7B, ADM) in 810 gm of water and cooked at pH 10 and 45° C. for 1 hour. The resulting dispersion was then centrifuged at 3000 rpm and 15° C. for 10 minutes. Soy protein dispersion was removed and the spent flakes were washed with water and centrifuged again to obtain spent flakes with a solids content of 12.2%. A 382.5 gm sample of a 5.2% aqueous dispersion of spent flakes was mixed with 157.51 gm of 50.7% carboxylated styrene-butadiene latex (CP620NA, Dow) and the pH adjusted to 9. The dispersion was dried in the same manner as that in Example 1. After drying, the mechanical properties were measured as described in Example 1. The mechanical properties of this composite are shown in FIG. 1B, FIG. 2, FIG. 3B, and FIG. 5B.

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Abstract

The invention is related to the preparation of an ionic polymer composite material comprising a protein and carbohydrate-containing vegetable material component that serves as a reinforcement agent for the composite. In preferred embodiments of the invention, the vegetable seed component is selected from the group of soy spent flakes, defatted soy flour, or soy protein concentrate with ionic polymers and the ionic polymer is carboxylated poly(styrene-butadiene). The composites have a significantly higher elastic modulus when compared with base polymer.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The invention is related to the preparation of an ionic polymer composition comprising a protein and carbohydrate-containing vegetable material component, such as soy spent flakes, defatted soy flour, or soy protein concentrate. The composite composition is formed by incorporating soy spent flakes, defatted soy flour, or soy protein concentrate composition with ionic polymers. The composites have a significantly higher elastic modulus when compared with base polymer. [0003] 2. Description of the Prior Art [0004] Soybean is composed of approximately 20% soybean oil, 8% hulls, and 72% defatted soy flour. Soybean also contains very little or no starch. Traditional approaches to the art of soybean processing involve appropriate preparation of the soybean prior to solvent extraction. After cracking of the beans and subsequent separation of the hull from the kernel portions, the cracked kernels are steam conditioned in la...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08L89/00
CPCC08L13/00C08L51/003C08L89/00C08L99/00Y10T428/254Y10T428/2982C08L2666/26C08L2666/06C08L2666/08
Inventor JONG, LEI
Owner US SEC AGRI
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