A kind of preparation method of high oil absorption hemp cellulose

A technology of hemp cellulose and hemp fiber, which is applied in the field of preparation of oil-absorbing materials, can solve problems such as difficult to achieve oil-absorbing effect, poor oil-absorbing effect, and low production of kapok, and achieve stable and easy-to-control process parameters, fast adsorption speed, and large oil-absorbing capacity Effect

Inactive Publication Date: 2017-08-18
SHAOXING UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single etherification or esterification modification is difficult to achieve the ideal oil absorption effect, and compound modification takes a long time
[0007] At present, the research on cellulose-based oil-absorbing materials mainly focuses on several materials such as kapok, straw, bagasse, wood chips, and pulp. , straw, sawdust, etc. have poor oil absorption effect
In addition, fiber pretreatment needs to be carried out before modification, the process is complex and energy-consuming and time-consuming

Method used

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  • A kind of preparation method of high oil absorption hemp cellulose
  • A kind of preparation method of high oil absorption hemp cellulose
  • A kind of preparation method of high oil absorption hemp cellulose

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preparation example Construction

[0059] A preparation method of high oil-absorbing hemp cellulose, comprising the steps of:

[0060] (1) Preparation of treatment solution

[0061]Composition of treatment liquid (by weight, parts)

[0062]

[0063] Preparation method of treatment liquid:

[0064] ①. Weigh 56 parts of water, adjust the pH value to 3-4 with a buffer solution composed of citric acid and sodium citrate, add 10 parts of etherification agent, and hydrolyze it in a shaking water bath at 40°C for 2 hours until the surface of the solution is free. oil phase exists;

[0065] ②. Weigh 28 parts of water, add 4 parts of etherification agent and 2 parts of catalyst, stir to fully dissolve;

[0066] ③. Under stirring conditions, mix the etherification agent solution and the esterification agent solution evenly to form a treatment solution.

[0067] (2) Dipping treatment solution

[0068] The weight ratio of jute cellulose to the solution is 1-10, the fibrous cellulose is immersed in the treatment, an...

Embodiment 1-8

[0080] The basic process is the same as the first group of embodiments. The difference of each specific embodiment is that the composition and proportioning of the treatment liquid are adjusted, and the oil absorption effect of the product is detected and counted, as shown in Table 1:

[0081] Table 1: Effects of different treatment fluid compositions on product performance

[0082]

[0083]

[0084] It can be seen from Examples 1-4 that with the increase of the number of alkyl carbon atoms in the alkyltrimethoxysilane, the oil absorption rate and the oil absorption amount have a small increase, and the silane complex with low carbon number and high carbon number Compound modification has the best effect. This is because the more carbon atoms, the stronger the hydrophobicity of silane, and the greater the adsorption force to oil, but the more carbon atoms, the larger the silane molecule, and it is difficult for large molecules to enter the amorphous region with smaller p...

Embodiment 9-13

[0109] The basic process is the same as the second group of embodiments, the difference is that different drying processes are adjusted (note: the drying process here refers to the treatment process after dehydration, which is different from the drying process in step 7), and the oil absorption of the product is detected and counted The effect, as shown in Table 2:

[0110] Table 2. Effect of different drying processes on product performance.

[0111]

[0112] As shown in table 2:

[0113] Comparing Example 9 and Example 10, the use of pre-drying treatment can improve the oil absorption effect, this is because through pre-drying, the moisture is slowly volatilized from the inside of the cellulose at a lower temperature without the modifier Carried to the surface of cellulose to achieve the purpose of improving the modification effect.

[0114] It can be seen from Examples 10-12 that when the baking temperature is low (Example 11), the oil absorption effect is poor, probab...

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Abstract

The invention discloses a preparation method of high oil-absorption hemp cellulose, and belongs to the technical field of oil-absorption material preparation. The preparation method of the high oil-absorption hemp cellulose is characterized by comprising the following steps of treatment fluid preparation, treatment fluid dipping, dehydration, pre-drying, baking, washing and drying. By means of reasonable preparation, treatment fluid dipping and technologies of pre-drying, baking, washing and drying, the hydrophobic oil-wet performance of a product is effectively improved and maintained. According to the preparation method of the high oil-absorption hemp cellulose, the technology is simple, the procedure is short, the prepared high oil-absorption hemp cellulose is good in oil-water selectivity and high in adsorption velocity, the oil absorption volume is large, and biodegradation can be achieved.

Description

[0001] Technical field: [0002] The invention relates to a preparation method of an oil-absorbing material, in particular to a preparation method of high oil-absorbing hemp cellulose. [0003] Background technique: [0004] With the development of industry and the improvement of people's living standards, the discharge of oil pollution is increasing, and the harm to rivers, oceans and human living environment is becoming more and more serious. Oily pollutants have the characteristics of environmental persistence, bioaccumulation, semi-volatility, long-distance migration, and high altitude. Therefore, the research and development of effective oil recovery technology and efficient purification materials for oily wastewater have become a research hotspot. one. [0005] The adsorption method has the characteristics of high efficiency, economy, and easy promotion, and has become a common method for oil pollution treatment. The key to oil pollution adsorption treatment technology ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B13/00
CPCC08B13/00
Inventor 王维明
Owner SHAOXING UNIVERSITY
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