Preparation method of wood fiber oil-absorption material

A wood fiber and oil-absorbing material technology, applied in the field of biomass refining, can solve the problems of unsuitability for industrial production, high amount of organic solvent, high price, etc., and achieve good oil-absorbing effect, high reaction degree, and short modification time.

Inactive Publication Date: 2017-05-31
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The homogeneous modification system is to dissolve wood fibers in organic solvents and other cellulose solvent systems, so as to effectively disperse the fibers and improve the reaction efficiency. However, the amount of organic solvents is high, the price is too expensive, and it is harmful to the human body, so it is not suitable for industrial production.

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  • Preparation method of wood fiber oil-absorption material
  • Preparation method of wood fiber oil-absorption material
  • Preparation method of wood fiber oil-absorption material

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preparation example Construction

[0027] The invention provides a preparation method of lignocellulosic oil-absorbing material, comprising the following steps:

[0028] The wood fiber and the esterification reagent are subjected to esterification reaction under pyridine catalysis and ball milling conditions to obtain the wood fiber oil-absorbing material.

[0029] The present invention does not have any special limitation on the source of the lignocellulosic fiber, and the source of the lignocellulosic fiber well known to those skilled in the art or commercial products can be used; in the embodiment of the present invention, the lignocellulosic biomass raw material is preferably extracted to obtain the lignocellulosic For wood fiber, the solvent used in the extraction is a mixed solvent of toluene and ethanol, and the volume ratio of the toluene and ethanol is 2:1.

[0030] In the present invention, the extraction time is preferably 10-12 hours, more preferably 11-11.5 hours; the extraction temperature is pref...

Embodiment 1

[0051] Extract bagasse with a mixed solution of toluene and ethanol at a volume ratio of 2:1 to obtain bagasse raw material, take 3 mL of acetic anhydride, 3 mL of pyridine and 1 g of pulverized bagasse raw material in a ball mill jar, set the ball mill speed to 1200 rpm , ball milled in a continuous manner for 4 hours, washed with deionized water for several times, dried in an oven at 70°C for 12 hours, and then transferred to an oven at 105°C for 12 hours to obtain bagasse acetate oil-absorbing material.

[0052] Bagasse after extraction, bagasse after reaction for 0.5h, bagasse after reaction for 2h, and bagasse after reaction for 4h were analyzed by scanning electron microscope, the results are as follows: figure 1 As shown, after ball milling modification, the surface morphology of the bagasse changed, and the bagasse was completely pulverized, which fully increased the surface area of ​​the bagasse.

[0053] After weighing, the weight gain rate of bagasse acetate oil-abs...

Embodiment 2

[0055] Extract bagasse with a mixed solution of toluene and ethanol with a volume ratio of 2:1 to obtain bagasse raw material, take 3.5mL propionic anhydride, 2.1mL pyridine and 1g pulverized bagasse raw material and place them in a ball mill jar, set the ball mill speed 800rpm, ball milled continuously for 2h, the product was washed several times with methanol, dried in an oven at 90°C for 12h, and then transferred to an oven at 110°C for 24h to obtain bagasse propionate oil-absorbing material.

[0056] After weighing, the weight gain rate of bagasse propionate oil-absorbing material is 33.6%, the adsorption rate to diesel oil is 9.35g / g, and the adsorption rate to soybean oil is 9.72g / g. It is detected by infrared spectroscopy, and the obtained results Such as image 3 shown. 1745cm -1 The C=O stretching vibration absorption peak in the ester bond at 1462cm -1 The characteristic absorption peak of propionyl, and 2985~2888cm -1 Two saturated C-H bond absorption peaks appe...

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Abstract

The invention provides a preparation method of a wood fiber oil-absorption material. An esterification reaction is carried out on wood fiber and an esterification reagent under the conditions of a pyridine catalysis effect and ball-milling, so that the wood fiber oil-absorption material is obtained, an organic solvent does not need to be used in the reaction process, the product separation and purification treatment is simple, and the preparation technology is convenient in operation, short in modification time, high in reaction degree and better in oil absorption effect; the absorption rate for diesel oil is 9.86 g/g, and the absorption rate for soybean oil is 10.21 g/g.

Description

technical field [0001] The invention relates to the technical field of biomass refining, in particular to a preparation method of lignocellulosic oil-absorbing material. Background technique [0002] Wood fiber is an environmentally friendly renewable resource with abundant reserves and fast regeneration speed. Among them, wood raw materials have been widely used in the fields of construction, home decoration, and paper industry, while agricultural residues such as wheat straw, crop straw, and fruit shells are gradually eliminated by the paper industry due to their relatively high pulping pollution. waiting to be solved. [0003] Lignocellulosic plant cell walls are composed of three main components, namely cellulose, hemicellulose and lignin, and the hydroxyl groups on cellulose are hydrophilic, so in the presence of moisture, unmodified lignocellulosic biomass raw materials The mechanical properties and appearance are easy to change, and it is also easy to be degraded or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H8/00C09K3/32
CPCC08H8/00C09K3/32
Inventor 张强刘传富孙润仓
Owner SOUTH CHINA UNIV OF TECH
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