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 product environmental protection is relatively low, lacks economical practicability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] ①Crush 5.0g of cellulose with a degree of polymerization of 548 into blocks, put it in a 250ml three-neck flask, add 100g of ethylenediamine solution with a mass fraction of 75% at 40°C, stir for 4 hours, filter with suction, distilled water Wash until neutral, press for use;

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

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

[0036] ④Add 2.5g of acrylamide and 2.5g of butyl methacrylate, raise the temperature to 70°C under stirring, react at constant temperature for 2h, add 0.08g of N,N-methylenebisacrylamide, continue stirring for 1h to obtain a mixed solution II;

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

Embodiment 2

[0043] ①Crush 4.0g of cellulose with a degree of polymerization of 655 into blocks, put it in a 250ml three-neck flask, add 80g of ethylenediamine solution with a mass fraction of 75% at 40°C, stir for 4 hours, filter with suction, and wash with water to neutral, pressed for use;

[0044] ② Add 100 g 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 mixed solution I;

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

[0046] ④Add 2.5g of acrylamide and 1.5g of butyl methacrylate, raise the temperature to 60°C under stirring, react at constant temperature for 2h, add 0.06g of N,N-methylenebisacrylamide, continue stirring for 1h to obtain a mixed solution II;

[0047] ⑤ After degassing the mixed solution II on a centrifuge at a speed of 5000r / min for 15min, the film was cast and scraped on a glass plate, and then the film was placed in ...

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PUM

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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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