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A kind of pineapple pomace cellulose-g-acrylic acid/kaolin/squid ink gel and its preparation method and application

A technology of pineapple peel residue and cellulose, which is applied in the field of composite hydrogel, can solve the problems of high-value utilization of cellulose, and achieve the effects of low equipment requirements, abundant and easy-to-obtain materials, and improved application performance

Active Publication Date: 2018-09-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Studies have found that pineapple pomace is mainly composed of cellulose, hemicellulose, lignin and pectin, and the dry weight content of cellulose reaches 22%. Making full use of these cellulose is an important entry point for the high value of pineapple pomace, but At present, there are relatively few studies on the high-value utilization of pineapple pomace cellulose

Method used

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  • A kind of pineapple pomace cellulose-g-acrylic acid/kaolin/squid ink gel and its preparation method and application
  • A kind of pineapple pomace cellulose-g-acrylic acid/kaolin/squid ink gel and its preparation method and application
  • A kind of pineapple pomace cellulose-g-acrylic acid/kaolin/squid ink gel and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) The pineapple pomace is washed, beaten, dried at 50°C for 36 hours, pulverized and sieved under 80 mesh to obtain pineapple pomace powder;

[0049] (2) Mix pineapple peel residue powder with distilled water at a solid-liquid ratio of 1:20g / mL, heat in a water bath at 70°C for 2 hours, and collect the filter residue after filtration for bleaching treatment. Use sodium chlorite solution with a mass fraction of 7.5% as the bleaching agent, the solid-liquid ratio is 1:15g / mL, adjust the pH value of the solution to 3.8 with 4mol / L hydrochloric acid solution, and bleach at 70°C for 2 hours;

[0050] (3) Collect the insoluble matter after the bleaching treatment by filtration, wash with distilled water to neutrality and then wash 3 times with ethanol solution with a volume fraction of 95%, air-dry at room temperature for 2 hours, and dry at 50° C. for 18 hours to obtain the crude pineapple pomace cellulose;

[0051] (4) Mix the crude pineapple pomace cellulose with 10% sod...

Embodiment 2

[0056] (1) The pineapple pomace is washed, beaten, dried at 55°C for 24 hours, pulverized and sieved under 100 mesh to obtain pineapple pomace powder;

[0057] (2) Mix pineapple peel residue powder with distilled water at a solid-liquid ratio of 1:25g / mL, heat in a water bath at 75°C for 3 hours, and collect the filter residue after filtration for bleaching treatment. Use sodium chlorite solution with a mass fraction of 8.0% as the bleaching agent, the ratio of solid to liquid is 1:20g / mL, adjust the pH value of the solution to 3.9 with 4mol / L hydrochloric acid solution, and bleach at 75°C for 3h;

[0058] (3) Collect the insoluble matter after the bleaching treatment by filtration, wash with distilled water to neutrality and then wash with ethanol solution with a volume fraction of 95% for 4 times, air-dry at room temperature for 3 hours, and dry at 55°C for 20 hours to obtain the crude pineapple pomace cellulose;

[0059] (4) Mix the crude pineapple pomace cellulose with 10%...

Embodiment 3

[0064] (1) The pineapple pomace is washed, beaten, dried at 55°C for 30 hours, pulverized and sieved under 100 mesh to obtain pineapple pomace powder;

[0065] (2) Mix pineapple peel residue powder with distilled water at a solid-liquid ratio of 1:20g / mL, heat in a water bath at 80°C for 3 hours, and collect the filter residue after filtration for bleaching treatment. Use sodium chlorite solution with a mass fraction of 7.5% as the bleaching agent, the ratio of solid to liquid is 1:20g / mL, adjust the pH value of the solution to 3.9 with 4mol / L hydrochloric acid solution, and bleach at 80°C for 3h;

[0066] (3) Collect the insoluble matter after the bleaching treatment by filtration, wash with distilled water to neutrality and then wash 5 times with an ethanol solution with a volume fraction of 95%, air-dry at room temperature for 3 hours, and dry at 55° C. for 18 hours to obtain the crude pineapple pomace cellulose;

[0067] (4) Mix the crude pineapple pomace cellulose with 10...

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Abstract

The invention discloses novel pineapple peel residue cellulose-g-acrylic acid-kaolin-cuttlefish ink hydrogel and a preparation method and application thereof. The preparation method comprises the steps that pineapple peel residues are taken as raw materials to be cleaned, dried, smashed, bleached and treated through alkali liquor, and then pineapple peel residue cellulose is obtained; the pineapple peel residue cellulose is stirred to be dissolved in ionic liquid through heating, and grafting modification is conducted by taking ammonium persulfate as an initiator, taking N,N-methylene bisacrylamide as a cross-linking agent and taking acrylic acid as a monomer; kaolin and cuttlefish ink are added, after reacting is completed, a product is cooled to room temperature and soaked and washed by adding distilled water, freeze drying is conducted, and then the hydrogel is obtained. According to the novel pineapple peel residue cellulose-g-acrylic acid-kaolin-cuttlefish ink hydrogel, the adopted raw materials are rich in source, convenient and easy to obtain and good in economy; the technology that the pineapple peel residue cellulose is modified and then prepared into the hydrogel is simple and short in reaction time, the thermal stability of the hydrogel can be improved through the cuttlefish ink and the kaolin, and the obtained hydrogel has a good application prospect in the fields of waste water treatment and adsorption materials.

Description

technical field [0001] The invention belongs to the technical field of composite hydrogel, and in particular relates to a pineapple pomace cellulose-g-acrylic acid / kaolin / squid ink gel and a preparation method and application thereof. Background technique [0002] Pineapple (Ananas comosus) is a tropical fruit with rich resources and unique flavor. It is deeply loved by the public. Its main production areas are concentrated in China, Thailand, Brazil, Mexico, the Philippines and Malaysia. The annual output of pineapple in the world is about 16-19 million tons, and the annual output in my country is about more than 2 million tons. Most pineapples are eaten fresh, or processed into canned pineapple, jam, salad, cocktail accessories, etc., and used as raw materials for the extraction of bromelain. During the processing of pineapple products, pineapple pomace occupies 30-42% of the pineapple processing waste, which is usually discarded as a by-product of processing, which pollut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/02C08L89/00C08K3/34C08F251/02C08F220/06C08J3/075
CPCC08F251/02C08J3/075C08J2351/02C08J2489/00C08L51/02C08L89/00C08K3/346C08F220/06
Inventor 黄惠华戴宏杰
Owner SOUTH CHINA UNIV OF TECH
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