Cellulose based water-absorbing and oil-absorbing film and preparation method thereof

A cellulose-based and lignocellulose technology is applied in the field of cellulose-based water and oil-absorbing films, which can solve the problems of lack of economical practicability, unsatisfactory water and oil-absorbing effects, and low environmental protection of products, and achieves excellent degradability and comprehensive production. Cost reduction, low cost effect

Inactive Publication Date: 2012-07-25
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Equally, its water-absorbing and oil-absorbing effect is not ideal enough, and pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] ①Crush 5.0 g of cellulose with a degree of polymerization of 548 into lumps, place it in a 250ml three-necked flask, add 100g of 75% ethylenediamine solution at 40°C, stir and react for 4h, filter with suction, and distilled water Wash to neutral, press for later use;

[0034] ②Add 100g of alkaline substance aqueous solution containing 5wt% of sodium hydroxide and 8wt% of urea, freeze at -12°C for 5h, and stir at room temperature to obtain a uniform and transparent mixture I;

[0035] ③Add 0.24g of potassium persulfate, stir and react for 0.5h;

[0036] ④Add 2.5g of acrylamide and 2.5g of butyl methacrylate, heat up to 70℃ with stirring, react at constant temperature for 2h, add 0.08g of N,N-methylenebisacrylamide, continue to stir and react for 1h to obtain a mixture II;

[0037] ⑤After degassing the mixed solution II on a centrifuge at a speed of 5000r / min for 20 minutes, cast a scraped film on a glass plate, and then place the film at a mass fraction of 10...

Example Embodiment

[0042] Example 2

[0043] ①Crush 4.0g of cellulose with a degree of polymerization of 655 into a block, place it in a 250ml three-necked flask, add 80g of 75% ethylenediamine solution at 40℃, stir and react for 4h, filter with suction, and wash with water To neutral, squeeze for use;

[0044] ②Add 100g of alkaline substance aqueous solution containing 7wt% sodium hydroxide and 12wt% urea, freeze at -12°C for 5 hours, and stir at room temperature to obtain a uniform and transparent mixture I;

[0045] ③Add 0.18g of potassium persulfate, stir and react for 0.5h;

[0046] ④Add 2.5g of acrylamide and 1.5g of butyl methacrylate, heat up to 60℃ with stirring, react at constant temperature for 2h, add 0.06g of N,N-methylenebisacrylamide, continue to stir and react for 1h to obtain a mixture II;

[0047] ⑤ After degassing the mixed solution II on a centrifuge at 5000r / min for 15 minutes, cast a scraped film on a glass plate, and then place the film at a mass fraction of 10wt% H 2 SO 4 And 12w...

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Abstract

The invention discloses a preparation method of a cellulose based water-absorbing and oil-absorbing film. According to the invention, water-absorbing substances and oil-absorbing substances are grafted on lignocellulose, the prepared film is smart and convenient to use and is wide in application fields. The homogeneous grafting copolymerization is adopted, and the problems of the microphase separation of heterogeneous copolymerization, unsatisfactory grafting effect and uneven component distribution are avoided effectively. As the substrate material (namely, cellulose) has good degradability and can eliminate the pollution of the waste synthesized material to the environment and maintains the ecological balance, the problem that the common water-absorbing and oil-absorbing materials can not meet the water absorbing and oil absorbing properties and biodegradation simultaneously can be solved.

Description

technical field [0001] The invention relates to a cellulose-based water-absorbing and oil-absorbing film, which belongs to the field of natural polymer materials. Background technique [0002] Cellulose is the most abundant natural polymer on the earth. It is derived from trees, plant straw, cotton and other agricultural by-products. It is a low-cost renewable resource. The derivative products of cellulose through physical and chemical modification have been widely used in chemical industry, medicine, environmental protection, building materials, petrochemical and other fields. Therefore, as an environmentally friendly renewable resource, cellulose is very popular all over the world. Pay attention to its research and development. Traditional fiber graft copolymerization reactions are carried out in a heterogeneous system. If these reactions are carried out in a homogeneous system, the degree of substitution of cellulose derivatives can be effectively controlled, and substit...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L51/02C08F251/02C08F220/18C08F220/56C08F222/38
Inventor 徐德增刘智超郭静
Owner DALIAN POLYTECHNIC UNIVERSITY
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