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Method for preparing biological-based plastics by using wood fibers as raw material

A technology of bio-based plastics and wood fiber, which is applied in the field of preparation of bio-based plastics, can solve the problems that no modified products can be injection molded, and the failure to successfully prepare lignocellulosic bio-based plastics, etc., achieves broad industrial application prospects, Good mechanical properties and high resource utilization

Inactive Publication Date: 2014-05-14
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if there are some studies on the modification and plasticization of lignocellulosic biomass, there is no report that the modified product can be injection molded, that is, the preparation of lignocellulosic bio-based plastics has not been successful so far.

Method used

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  • Method for preparing biological-based plastics by using wood fibers as raw material
  • Method for preparing biological-based plastics by using wood fibers as raw material
  • Method for preparing biological-based plastics by using wood fibers as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing bio-based plastics using wood fiber as a raw material, the specific steps are:

[0029] (1) Take hibiscus branches as raw materials, peel them, dry them in the air, crush them mechanically, and dry them.

[0030] (2) The raw material is pretreated by ball milling with a planetary ball mill, and the ball milling time is 15 hours. The ball mill jar is made of zirconia, with a capacity of 250mL. The ratio of raw materials to balls is 1:10, and the ratio of large, medium and small balls is 1:6:9. The ball milling speed is 580 r / min. min alternates once.

[0031] (3) Dissolve 18g of phthalic anhydride in 75g of N-methylimidazole.

[0032] (4) Dissolve 1.25g of p-dimethylaminopyridine in the solution obtained in step (3).

[0033] (5) Mix 9 g of ball-milled wood flour with the solution obtained in step (4), and stir mechanically at room temperature for 2 hours.

[0034] (6) After the reaction is complete, add acetone for full separation, and wash wi...

Embodiment 2

[0038] A method for preparing bio-based plastics using wood fiber as a raw material, the specific steps are:

[0039] (1) Take hibiscus branches as raw materials, peel them, dry them in the air, crush them mechanically, and dry them.

[0040] (2) The raw material is pretreated by ball milling with a planetary ball mill, and the ball milling time is 15 hours. The ball mill jar is made of zirconia, with a capacity of 250mL, the ratio of raw materials to grinding balls is 1:10, and the ratio of large, medium and small balls is 1:6:9. The rotational speed of the ball mill is 580 r / min, and there is no time interval between forward and reverse rotation; alternately every 90 min.

[0041] (3) Dissolve 18g of phthalic anhydride in 75g of N-methylimidazole.

[0042] (4) Mix 9 g of ball-milled wood powder with the solvent obtained in step (3), and stir mechanically at room temperature for 2 hours.

[0043] (5) After the reaction is completed, add acetone for full separation, and was...

Embodiment 3

[0047] A method for preparing bio-based plastics using wood fiber as a raw material, the specific steps are:

[0048] (1) Poplar wood is used as raw material, peeled, air-dried, mechanically crushed, and dried.

[0049](2) The raw material is pretreated by ball milling with a planetary ball mill, and the ball milling time is 15 hours. The ball mill jar is made of zirconia, with a capacity of 250mL, the ratio of raw materials to grinding balls is 1:10, and the ratio of large, medium and small balls is 1:6:9. The ball milling speed is 580 r / min, and there is no time interval between forward and reverse rotation, which is alternated every 90 min.

[0050] (3) Dissolve 18g of phthalic anhydride in 75g of N-methylimidazole.

[0051] (4) Dissolve 1.25 g of p-dimethylaminopyridine in the solution obtained in step (3).

[0052] (5) Mix 9 g of ball-milled wood flour with the solution obtained in step (4), and stir mechanically at room temperature for 2 hours.

[0053] (6) After the...

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Abstract

The invention discloses a method for preparing biological-based plastics by using wood fibers as a raw material. The method comprises the steps: crushing wood fiber biomasses, then carrying out ball milling to obtain a powder material; dissolving a modifying reagent by using a solvent, adding the powder material for performing a modification reaction; and after the modification reaction is ended, washing and drying the product to obtain the biological-based plastics. The method has the main advantages that 1, the raw material is wide in source and low in cost; 2, cellulose, hemicellulose and lignin in the wood fiber biomasses are compressively utilized, and a conventional single modification mode in which the cellulose is modified and utilized by separation, extraction and modification is changed; 3, a conventional pretreatment mode adopting a chemical method is changed through ball milling and pretreatment, and a large quantity of highly-corrosive reagents and solvents are prevented from being used; 4, the modification process is simple and easy to operate, a normal-temperature or low-temperature reaction is achieved, the reaction time is short, the industrial application prospect is wide; 5, the prepared product can be prepared into a plastics product through forming processes of extrusion molding, extruding and the like, and the plastic product is good in mechanical property.

Description

technical field [0001] The invention relates to the technical field of bio-based materials, in particular to a method for preparing bio-based plastics from wood fiber. Background technique [0002] Plastic is a very important organic synthetic polymer material with a wide range of applications. Since the appearance of the world's first fully synthetic plastic in 1907, the plastics industry has developed rapidly. Today, plastic products are everywhere, from industrial production to basic necessities of life. The huge plastic market has promoted the rapid development of various industries, but it has caused a series of environmental and resource problems while bringing benefits to human beings: the surge of plastic waste, and the shortage of petroleum resources as a source of plastic. Facing the grim reality, both developed and developing countries in the world are forced to rationally explore and develop new development models and strategies, and seek a sustainable developm...

Claims

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Application Information

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IPC IPC(8): C08L1/10C08L5/14C08L97/00
Inventor 洪建国苏萌潘振洪李小保陈健强叶菊娣高勤卫许安骐李永海
Owner NANJING FORESTRY UNIV
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