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Preparation method of wood fiber biomass film

A technology of lignocellulosic and biomass, which is applied in the field of biomass refining, can solve the problems of insoluble and low utilization efficiency of lignocellulosic biomass, and achieve the effects of strong dissolving ability, good ultraviolet absorption function and simple process

Active Publication Date: 2014-02-05
广州荧创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the "reinforced concrete" structure of lignocellulosic biomass makes it insoluble in traditional organic solvent systems, and cannot be melt-processed like synthetic polymers
Therefore, lignocellulosic biomass utilization has long been inefficient

Method used

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  • Preparation method of wood fiber biomass film
  • Preparation method of wood fiber biomass film
  • Preparation method of wood fiber biomass film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Lignocellulosic biomass adopts bagasse

[0022] A preparation method of lignocellulosic biomass film, comprising the steps of:

[0023] Step 1. pulverize the dried bagasse, and collect the 160 mesh sieve part;

[0024] Step 2. Take 0.5g of crushed bagasse powder and disperse it in 10g of DMSO / LiCl (the mass percentage of LiCl is 10%), and stir for 10h at 90°C under nitrogen protection to completely dissolve the bagasse to obtain a film liquid;

[0025] Step 3. Pour the film-making solution obtained in step 2 onto a glass plate, scrape it flat with a scraper, soak it in an acetone / water mixed solution (where the volume ratio of acetone to water is 9:1) to remove the solvent, and dry to obtain regeneration Bagasse film.

[0026] According to GB / T1040.3-2006, the prepared bagasse film was tested for tensile properties using a universal tensile machine. The obtained film can withstand a maximum stress of 30.8MPa, a Young's modulus of 1.43GPa, and a breaking...

Embodiment 2

[0029] Example 2: lignocellulosic biomass using corn stalks

[0030] A preparation method of lignocellulosic biomass film, comprising the steps of:

[0031] Step 1. Pulverize the dried corn stalks and collect the part through a 160-mesh sieve;

[0032] Step 2. Disperse 0.5 g of crushed corn stalk powder in 50 g of DMSO / LiCl (LiCl mass percentage 6%), and stir for 24 hours at 20°C under nitrogen protection to completely dissolve the corn stalk to obtain a film-making solution ;

[0033] Step 3. Pour the film-making solution obtained in step 2 onto a glass plate, scrape it flat with a scraper, soak in ethanol to remove the solvent, and dry to obtain a regenerated cornstalk film.

[0034] The prepared cornstalk film was tested according to GB / T1040.3-2006 using a universal tensile machine. The obtained film can withstand a maximum stress of 7.92MPa, a Young's modulus of 486MPa, and an elongation at break of 2.44%. .

[0035] The UV-Vis absorption spectra of the prepared films...

Embodiment 3

[0036] Embodiment 3: lignocellulosic biomass adopts masson pine

[0037] A preparation method of lignocellulosic biomass film, comprising the steps of:

[0038] Step 1. pulverize the dried Pinus massoniana, and collect the 160 mesh sieve part;

[0039] Step 2. Place 0.5 g of pulverized pine masson powder in 2.5 g of DMSO / LiCl (LiCl mass percentage content 2%), stir for 2 hours at 130 ° C under nitrogen protection conditions, completely dissolve the masson pine powder, and obtain the prepared Membrane fluid;

[0040] Step 3. Pour the film-making solution obtained in step 2 onto a glass plate, scrape it flat with a scraper, soak in isopropanol to remove the solvent, and dry to obtain a regenerated masson pine film.

[0041] The prepared masson pine film was tested according to GB / T1040.3-2006 using a universal tensile machine. The obtained film can withstand a maximum stress of 52.6MPa, a Young's modulus of 2.65GPa, and an elongation at break of 3.90 %.

[0042] The UV-Vis a...

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Abstract

The invention discloses a preparation method of a wood fiber biomass film, which comprises the following steps: pulverizing wood fiber biomass, and passing through a 160-mesh screen; dissolving the pulverized wood fiber biomass in DMSO(dimethyl sulfoxide) / LiCl to obtain a wood fiber biomass film preparation solution, wherein the LiCl accounts for 2-10 wt% of the solvent system DMSO / LiCl, and the mass percent of the wood fiber biomass film preparation solution is controlled at 1-20%; and knifing the film preparation solution on a flat plate, immersing in a coagulation bath to remove the solvent, and drying to obtain the regenerated wood fiber biomass film. The prepared wood fiber biomass film has the advantages of smooth surface, firm structure and no obvious collapse; and the method is simple to operate and high in efficiency, and can directly adopt the existing high-polymer film formation equipment. The method disclosed by the invention can provide technical support for producing industrial new materials from wood fiber biomass.

Description

technical field [0001] The invention relates to the technical field of biomass refining, in particular to the preparation of biomass-based materials, and in particular to a method for directly preparing thin films by utilizing all components of biomass. Background technique [0002] Lignocellulosic biomass has many advantages such as large output, abundant sources, low price, renewable, biodegradable, and environmental friendliness, and is an ideal industrial raw material. With the decreasing storage of fossil raw materials such as coal and petroleum, the research on using green and renewable biomass raw materials to replace traditional fossil raw materials as raw materials for industrial production has attracted the attention of countries all over the world. my country has listed the comprehensive development and utilization of biomass as a national key development theme in the future. [0003] The main components of lignocellulosic biomass include cellulose, hemicellulose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L97/00C08L1/02C08L5/14
Inventor 刘传富陈铭杰孙润仓张雪琴
Owner 广州荧创科技有限公司
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