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Polysaccharide-based network and method for the production thereof

A network and polysaccharide technology, applied in the field of preparation of polysaccharide-based networks

Inactive Publication Date: 2007-08-29
INNOGEL AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Polysaccharide-based network and method for the production thereof
  • Polysaccharide-based network and method for the production thereof
  • Polysaccharide-based network and method for the production thereof

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Embodiment 1

[0208] Figure 1 shows the water content as W 0 A function of the swelling properties of starch gels. The corresponding starch gel has a water content of W 0 produced without further use of softeners. Plasticized potato starch was used as base starch and debranched high amylose starch was used as network starch. After network formation, the water content W 0 keep it steady. After swelling (24 hours in water), the water content of the network film is obtained by using 0 determined by the starch gel. The graph shows the water content after expansion as a function of the water content W 0 while falling, for example, with the smallest possible water content W 0 The production of gels is decisive for obtaining starch gels with reduced water absorption.

Embodiment 2

[0210] The values ​​determined in Fig. 2 are based on the same procedure and assays as in Fig. 1, but in this case the content of network starch was varied in order to study its influence. The results show that the water content decreases with increasing network starch after swelling. Also see the water content W 0 Impact.

Embodiment 3

[0212] Figure 3 shows the water content as W 1 A function of (water content after swelling in water), the tensile strength of the starch network. Plasticized potato starch was used as the base starch and a mixture of debranched maltodextrin and debranched high amylose was used as the network starch, where the components were separately dissolved and supercooled before being applied together in the base mix. With decreasing water content W of the swollen network 1 , at W 1 =25% Tensile strength increases significantly up to about 8 MPa. This is a surprising result of exhausting the possibilities of the method of the invention. Traditional thermoplastic starch-based materials have strengths in this range, but they are completely soluble in water. With the starch network of the present invention it is now possible to obtain typical TPS strengths, even after full swelling in water. The advantages and possibilities of the web can be seen very clearly here. By changing the wat...

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Abstract

The production of polysaccharide networks, especially starch networks, having a high network density, high solidity, a low swelling degree, and exhibiting reduced water absorption and to the uses thereof, especially, in the field of biodegradable plastics.

Description

technical field [0001] The invention relates to a preparation method of a polysaccharide-based network, the prepared network and its application. Background technique [0002] Polysaccharides, substances that can naturally regenerate, especially starch, have the following advantages as bioplastics: low cost of raw materials, high purity of raw materials, wide range of applications, broad spectrum types with unique properties, renewable raw materials, CO 2 Neutral, easy to handle, good O 2 Barrier properties. These advantages result in the manufacture of applied bioplastics, eg starch-based bioplastics, especially thermoplastic starch-based bioplastics. [0003] The production of thermoplastic starches is described in WO 94 / 28029, US 5362777, US 5382611 and US 5427614 patent specifications. Thermoplastic starch based foam products are described in WO 96 / 07693, WO 94 / 28063, WP95 / 04104, US 5801207 and US 5736586, and thermoplastic starch based films are claimed in WO 94 / 0460...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K47/36A61K9/48C08L3/00A23L1/00A23L29/20A61J3/07A61K8/02A61K8/11A61K8/72A61K8/73A61K9/50A61L27/00C08B30/14C08B31/00C08L3/02
CPCC08L3/02C08B31/003A61J3/077A61K9/4816A61K9/5036C08L2666/02
Inventor 罗尔夫.米勒费德里科.英纳里本纳保罗.史密斯特奥·A·特弗尔特
Owner INNOGEL AG