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A kind of konjac high temperature foaming composition and preparation method thereof

A technology of high-temperature foaming and composition, applied in the field of degradable biomaterials, can solve the problems of low foaming temperature, long-term heat transfer, and difficulty in obtaining large-area and large-volume foams, etc. The method is simple and the equipment requirements Simple and convenient molding and shaping effect

Inactive Publication Date: 2018-11-23
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, due to the expansion of the application of konjac, a lot of research has been carried out as a material with foaming and shaping capabilities; among them, ZL20131093091.3 discloses the basic composition, foaming method and application of konjac foaming materials; konjac foaming materials are all In the case of steam heating, the carbon dioxide generated by the decomposition of acid and alkali is used to form bubbles, and the foam is formed by fixing the deacetylated konjac skeleton; but because the foaming temperature is low under this condition, it takes a long time to transfer heat, so It is determined that this kind of foam is difficult to obtain a large-area and large-volume foam
[0003] One of the ways to solve this problem is to increase the foaming temperature and formulate a new foaming system; there is no report about the konjac high-temperature foaming system and its foaming process

Method used

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  • A kind of konjac high temperature foaming composition and preparation method thereof
  • A kind of konjac high temperature foaming composition and preparation method thereof
  • A kind of konjac high temperature foaming composition and preparation method thereof

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preparation example Construction

[0030] The preparation method of the present invention comprises the steps:

[0031] 1) Mix 75wt%~90wt% konjac flour, 0.9wt%~11wt% foaming agent, 2.5wt~4.5wt% dispersant, 1wt%~8.8wt% coagulant, and make konjac high-temperature foaming composition;

[0032] 2) Dissolve the composition in 0~15% (v / v) alcohol solution to make foaming solution;

[0033] 3) Disperse the molten slurry evenly and put it into the mold. Foaming under high temperature conditions for 10-30 minutes;

[0034] 4) Put the foamed konjac composition into a freezer at about -20°C for 12-48 hours. Take out, dehydrate, and air dry or tumble dry.

[0035] The konjac flour in the above composition is purified konjac powder, the konjac glucomannan content is not less than 80%, and the acetylation degree should be about 4%.

[0036] The foaming agent used in the composition should be one or more of foaming agent AC, foaming agent H, foaming agent OBSH, and foaming agent TSH. The dispersant used should be one or ...

Embodiment 1

[0041] Konjac powder 60 grams, foaming agent AC 8 grams, sodium carbonate 0.8 grams, OP-10 5.5 grams, mix well to make a foaming composition; add 1240 ml of water, mix well, put into the mold; put the mold in Put it in a constant temperature oil bath at 240°C for 10 minutes; take it out and freeze it in the freezer for 24 hours, dehydrate, and dry naturally to get the finished product.

Embodiment 2

[0043] 75 grams of konjac flour, 10 grams of foaming agent H, 1.0 grams of sodium carbonate, and 5.0 grams of Span 80 are mixed uniformly to make a foaming composition; 569 milliliters of 15% aqueous methanol are added, mixed uniformly, and put into a mould; In the oven, set the upper and lower temperatures to be 160°C and bake for 30 minutes; take it out and freeze it in the freezer for 48 hours, dehydrate, and dry naturally to get the finished product.

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Abstract

The invention discloses a Rivier giantarum high-temperature-foamed composition and a preparation method therefor and belongs to the field of biodegradable materials. Medium- / high-density Rivier giantarum sponge can be obtained through dissolving Rivier giantarum rhizome powder, a foamer, a dispersant and a coagulant into an ethanol solution, carrying out mixed slurrying, carrying out high-temperature foaming at the temperature of 180 DEG C to 240 DEG C, and carrying out freezing, dehydrating and drying without the procedures of bleaching, washing and the like. The Rivier giantarum sponge disclosed by the invention can be used for uniformly foaming molds under high-temperature conditions of drying ovens, baking ovens, oil bath and the like, can be designed into various shapes and facilitate molding and sizing. The Rivier giantarum sponge can serve as a biodegradable support material or a carrier of drugs. The Rivier giantarum sponge is high in purity, is free of residue and has very good biocompatibility, so that the new material is very applicable to cosmetics industry with relatively high requirements on safety and the technical field of biology.

Description

technical field [0001] The invention relates to the field of degradable biological materials, in particular to a konjac high-temperature foaming composition and a preparation method thereof. Background technique [0002] In recent years, due to the expansion of the application of konjac, a lot of research has been carried out as a material with foaming and shaping capabilities; among them, ZL20131093091.3 discloses the basic composition, foaming method and application of konjac foaming materials; konjac foaming materials are all In the case of steam heating, the carbon dioxide generated by the decomposition of acid and alkali is used to form bubbles, and the foam is formed by fixing the deacetylated konjac skeleton; but because the foaming temperature is low under this condition, it takes a long time to transfer heat, so It is determined that this foam is difficult to obtain a large-area and large-volume foam. [0003] One of the ways to solve this problem is to increase th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L5/00C08K3/26C08J9/10
CPCC08J9/103C08J9/104C08J9/107C08J2203/04C08J2305/00C08K3/26C08K2003/262C08L5/00C08L2201/06C08L2201/14C08L71/02
Inventor 罗立新邵思琪姜敏洁
Owner WUHAN UNIV