Preparation method of biological calcium composite super absorbent resin

A technology of super absorbent resin and biological calcium, applied in the field of organic-inorganic composite hydrogel, can solve the problems of pollution, waste of resources and environment, low utilization rate of development, etc., and achieve the effect of saving fossil energy and enriching porous structure.

Pending Publication Date: 2019-08-02
CHIZHOU UNIV
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  • Abstract
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Problems solved by technology

my country has very rich biomass resources, but the current development and utilization rate is low; at the same time, my country is also a large aquaculture country, and the inedible crustacean waste produced every year exceeds 10 million tons. , most of which are discarded, resulting in a great waste of resources and environmental pollution

Method used

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  • Preparation method of biological calcium composite super absorbent resin
  • Preparation method of biological calcium composite super absorbent resin
  • Preparation method of biological calcium composite super absorbent resin

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preparation example Construction

[0033] A preparation method of biological calcium composite superabsorbent resin, comprising the steps of:

[0034] a. Disperse 0.5-3 parts by mass of biopolymer in an appropriate amount of pure water and stir, then mix 0.4-6 parts by mass of bio-calcium powder with 2-12 parts by mass of NaOH, add appropriate amount of pure water to make a paste, and After heat preservation treatment, add the above-mentioned biopolymer solution or directly add the above-mentioned biopolymer solution, and stir to make the bio-calcium powder and the biopolymer disperse completely evenly;

[0035] In the present invention, the biological calcium powder prepared from chitin-containing raw materials such as shrimp and crab shells is preferably mixed with NaOH to carry out a certain heat preservation treatment, so that the chitin contained in the calcium powder can undergo deacetylation reaction. Chitin can be introduced into the gel network, the content of inorganic substances in the product is hig...

Embodiment 1

[0041] Weigh 0.4 parts of shrimp shell powder (SSP), 1.2 parts of acorn starch, add 10 parts of pure water to make a paste, add 3.2 parts of NaOH while stirring, and add 14.4 parts of acrylic acid (AA), 0.1 1 part of ammonium persulfate (APS), 0.02 part of N,N'-methylenebisacrylamide (MBA) and 68.68 parts of pure water, stirred evenly and placed in a water bath at 65°C for 5 hours; the gel formed after the reaction Cut into two pieces of equal quality, place one piece at 65°C for 12 hours, and obtain 9.46 parts of super absorbent resin (yield: 98%); the water absorption rate in pure water is 419±3g / g. The other piece of hydrogel was directly frozen in a refrigerator at -18°C. After it was completely frozen, it was taken out and directly immersed in absolute ethanol for dehydration. After the dehydration was complete, it was dried at 65°C for 12 hours. After crushing, 9.17 parts of physically modified superabsorbent were obtained. Resin (yield 95%); the water absorption rate in...

Embodiment 2

[0043]Weigh 2.0 parts of shrimp shell powder, add 1.2 parts of acorn starch, add 10 parts of pure water to make a paste, add 3.2 parts of NaOH while stirring, add 14 parts of acrylic acid (AA), 0.08 parts of Ammonium sulfate (APS), 0.02 parts of N,N'--methylenebisacrylamide (MBA) and 69.5 parts of pure water, stirred evenly and placed in a water bath at 65°C for 5 hours; the gel formed after the reaction was immersed in 2 times the mass of 10vol% ethanol aqueous solution, after it fully absorbs water and swells, put it in a -18°C refrigerator to freeze, take it out after complete freezing and immerse it in absolute ethanol for dehydration, and place it at 65°C for 12 hours after dehydration is complete. After crushing, 19.30 parts of physically modified superabsorbent resin were obtained (yield 94.2%); the water absorption ratios in pure water, tap water, normal saline and artificial urine were 2097±252, 423±3.5, 96.9±6.9 and 101.8±0.6 respectively g / g, the resin has good wate...

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Abstract

The invention discloses a preparation method of biological calcium composite super absorbent resin and belongs to the technical field of organic-inorganic composite hydrogel. Fish processing wastes such as shrimps, crabs, shells and fish bones are simply washed, dried and crushed to obtain biological mineralized calcium powder; biological macromolecules extracted from agriculture, forestry, fishery and animal husbandry industry production side products are used as a macromolecular main chain; by being initiated by an initiator, the macromolecular main chain is copolymerized with hydrophilic monomer acrylic acid to prepare biological polymer based super absorbent resin; in the preparation process, the biological polymer based super absorbent resin is compounded with the treated biological calcium powder; through chemical reaction between the biological calcium and the acrylic acid, a porous structure is generated; and by using anhydrous low carbon alcohol to directly dehydrate pre-swelling and frozen composite hydrogel, physically modified porous biological calcium composite super absorbent resin is obtained. The preparation method of the biological calcium composite super absorbentresin, disclosed by the invention, has the advantages that carapace resources and biomass resources can be sufficiently utilized to be beneficial for saving energy; and moreover, the prepared resin possesses good water absorbing performance, water retention capacity and thermal stability.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic composite hydrogel, and in particular relates to a preparation method of biological calcium composite superabsorbent resin. Background technique [0002] Due to its unique structure and properties, hydrogels have very broad application prospects in many industries, and the development of multifunctional hydrogels is one of the current research hotspots in materials science. Polymer hydrogels contain a lot of water and have certain mechanical properties. They are similar to the structure and properties of biological tissues. They have important roles in biomedical engineering fields such as tissue engineering, drug delivery, wound dressing, disease diagnosis and treatment, etc. potential application value. However, the single function of traditional hydrogels, difficult to control properties, weak mechanical strength, poor biocompatibility and degradability limit the wide application of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08J9/28C08F251/00C08F220/06C08F222/38C08L51/02C08K3/32
CPCC08F251/00C08J3/075C08J9/28C08J2201/0484C08J2351/02C08K3/32C08K2003/325C08F220/06C08F222/385
Inventor 刘廷国任静宇王强英王成成杨明阳文亮
Owner CHIZHOU UNIV
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