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Method of preparing biodegradable super absorbent resin by using eggshell membrane

A technology of super absorbent resin and egg membrane, applied in the field of polymer materials, can solve problems such as low efficiency, and achieve the effects of simple equipment requirements, low cost, and degradable water absorption performance

Inactive Publication Date: 2012-04-18
SUIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, six components need to be configured separately, and the polymerization time needs to be more than 20 hours, so the efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Egg membrane modification:

[0023] At room temperature, wash the egg membrane and pulverize it into powder, pass through a sieve of 80-200 mesh, take 10 parts by mass of egg membrane powder and 600 parts of NaOH deionized aqueous solution with a concentration of 0.4%, stir and react at 60 degrees for 3 hours Finally, add hydrochloric acid with a mass concentration of 20% to adjust the pH value to neutral, filter and wash with suction, and dry under vacuum at 60 degrees. Take 5 parts of the above dry powder and add it to a three-necked bottle equipped with a stirring paddle and a condenser tube, fill it with 60 parts of deionized water, adjust the pH value to 11 with NaOH, add 5 parts of formaldehyde solution, and add NaHSO with a concentration of 10% under the condition of stirring 3 50 parts of the solution were reacted in a 70-degree water bath for 3 hours, concentrated, washed, and dried to obtain modified egg membrane powder.

[0024] 2. Preparation of water-...

Embodiment 2

[0027]The preparation method is the same as that in Example 1, adjusting 0.18 parts of ammonium cerium nitrate to be dissolved in 5 parts of water, adjusting the amount of acrylic acid to 30 parts, and the degree of neutralization to 65%; the amount of crosslinking agent N,N-methylenebisacrylamide Adjusted to 0.08 parts, a product with a water absorption rate of 866 g / g can be obtained.

Embodiment 3

[0029] The preparation method is the same as that in Example 1, adjusting 0.16 parts of ammonium cerium nitrate to be dissolved in 5 parts of water, adjusting the amount of acrylic acid to 20 parts, and the degree of neutralization to 65%; the amount of crosslinking agent N,N-methylenebisacrylamide Adjusted to 0.12 parts, a product with a water absorption rate of 822 g / g can be obtained.

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Abstract

The invention discloses a method of preparing a biodegradable super absorbent resin by using an eggshell membrane. The super absorbent resin is prepared by employing an ultrasonic irradiation polymerization technique to make a reaction in a water phase system. The super absorbent resin is prepared particularly by the following steps: 1. modifying the inner membrane of the egg; 2. polymerizing thesuper absorbent resin at room temperature. The method is characterized by realization of absorbent resin polymerization at room temperature, no need of external heating modes such as water bath and air, no limitation of a radiation source (e.g., Co60, etc.), and can realize the absorbent resin polymerization at room temperature only by modifying the eggshell membrane, a cross-linking agent and a single-component initiator. The method shortens reaction time, simplifies preparation technology, needs no nitrogen protection and prepares a product with strong water absorbing capacity. The preparedproduct can be used for medical supplies, personal hygiene items, agricultural water retention release agents and the like. The method of the invention has the advantages of uniform structure of prepared absorbent resin, high monomer conversion, simple preparation technology and low cost.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a method for preparing degradable superabsorbent resin by using egg membranes. Background technique [0002] With the improvement of poultry egg production and people's living standards and the rapid development of modern production technology, the production level of poultry eggs in my country has been greatly improved. my country's annual egg output exceeds 20 million tons, accounting for 42% of the world's total output. In the past 10 years, the output of poultry eggs has increased by 67.8%, and the annual output value of the egg industry has exceeded 120 billion yuan. In 2006, the output of poultry eggs was 29.456 million tons, and in 2007, the output of poultry eggs was 30 million tons. The per capita egg consumption level is close to that of developed countries. Egg consumption has increased substantially, while large quantities of eggshells are being di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F289/00C08F4/40C08H1/02
Inventor 王可答刘利军金凤友侯林樊铁波乔秀丽郎德龙尉靖
Owner SUIHUA UNIV
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