阅读说明：本技术 一种小桐子基纳米纸浆的制备方法 (Preparation method of jatropha curcas base nano paper pulp ) 是由 曾伟 赵丽娟 易龙飞 宋永娇 高元吉 史英博 张欣汝 于 2019-10-30 设计创作，主要内容包括：本发明公开一种小桐子基纳米纸浆的制备方法,属于纳米纸的制备技术领域。制备过程包括以下步骤：制备过程包括以下步骤：(1)将小桐子枝条沿着生长方向片成厚度为10-400微米的薄片,保证每个薄片内含有木通道腔体；(2)将100份薄片置于细菌或酶中发酵,所选用的发酵环境要适应相应的细菌的生长环境或适合酶的活性环境；(3)将发酵后的薄片用次氯酸钠溶液进行浸泡漂白；(4)将漂白的薄片平铺,采用压板机控制10-15MPa的压力对其进行压缩,得到透明的纳米纸。该方法合理利用了每年大量的小桐子废弃枝条,通过简单、低成本、低能耗的方式制备纳米纸,使废弃枝条转变为柔性有机发光二极管、柔性太阳能电池衬底材料等高附加值的纳米材料。(The invention discloses a preparation method of jatropha curcas base nano paper pulp, belonging to the technical field of preparation of nano paper. The preparation process comprises the following steps: the preparation process comprises the following steps: (1) slicing the jatropha curcas branches into slices with the thickness of 10-400 microns along the growth direction, and ensuring that each slice contains a wood channel cavity; (2) placing 100 parts of slices in bacteria or enzyme for fermentation, wherein the selected fermentation environment is suitable for the growth environment of corresponding bacteria or the activity environment of enzyme; (3) soaking and bleaching the fermented slices with a sodium hypochlorite solution; (4) and (3) flatly spreading the bleached slices, and compressing the slices by adopting a plate press to control the pressure of 10-15MPa to obtain the transparent nano paper. The method reasonably utilizes a large amount of waste barbadosnut branches every year, and prepares the nano paper in a simple, low-cost and low-energy consumption mode, so that the waste branches are converted into high-added-value nano materials such as flexible organic light-emitting diodes, flexible solar cell substrate materials and the like.)

1. A preparation method of Jatropha curcas base nano paper pulp is characterized in that the preparation process comprises the following steps:

(1) slicing the jatropha curcas branches into slices with the thickness of 10-400 microns along the growth direction, and ensuring that each slice contains a wood channel cavity;

(2) placing 100 parts of slices in bacteria or enzyme for fermentation, wherein the selected fermentation environment is suitable for the growth environment of corresponding bacteria or the activity environment of enzyme;

(3) soaking and bleaching the fermented slices with a sodium hypochlorite solution;

(4) and (3) flatly spreading the bleached slices, and compressing the slices by adopting a plate press to control the pressure of 10-15MPa to obtain the transparent nano paper.

2. The preparation method of the jatropha curcas based nano pulp according to claim 1, wherein in the step (2), the amount of the bacteria is 1-10 parts, and the bacteria is one or more of white rot fungi, genetically engineered fungi, trichoderma reesei, brown rot fungi and soft rot fungi.

3. The method for preparing the jatropha curcas based nanopaper according to claim 1, wherein in the step (2), the enzyme is used in an amount of 5-10 parts, and the enzyme is one or more of white rot fungus lignocellulose enzyme, cellulase, trichoderma reesei xylanase, polyphenol oxidase, laccase, hydrogen peroxide generating enzyme, and wakefulness reductase.

4. The preparation method of the jatropha curcas based nanopaper according to claim 1, wherein in the step (2), the fermentation days are 15-30 days.

5. The preparation method of the jatropha curcas based nanopaper according to claim 1, wherein in the step (3), the concentration of the sodium hypochlorite solution for soaking and bleaching is 10-40%, the soaking time is 30-120 minutes, and the temperature is 30-60 ℃.

Technical Field

The invention belongs to the technical field of preparation of nano paper, and particularly relates to a preparation method of jatropha curcas based nano paper pulp.

Background

China is vast in breadth, crop resources are rich, the total planting amount and the total yield of crops are in the forefront of the world, and meanwhile, a large amount of agricultural wastes such as trimmed branches, fallen leaves, crop residues and the like are not reasonably utilized, so that not only is the environment pollution caused, but also huge resource waste is caused. Cellulose and lignin contained in plant cell walls are renewable natural high-molecular compounds with the largest natural reserves, and cellulose nanofilaments obtained by processing cellulose can be used for preparing a film with a three-dimensional network structure, namely nanopaper.

Poplars, tobacco stems, peanut shells, rice stems and the like are common raw materials of cellulose nanofibrils, 200 ten thousand mu of jatropha curcas bases are built by Liangshan de agricultural bioenergy limited companies, jatropha curcas needs to be pruned every year, the yield of pruned branches is about 400 kg/year, and the cellulose nanofibrils obtained by processing the jatropha curcas branches are not reported to be used for preparing nano paper. In addition, the preparation method of the cellulose nanofibrils mainly comprises a high-pressure homogenization method, an ultrasonic preparation method, a grinding method and a micro-jet method at present, wherein the high-pressure homogenization method is the most mainstream preparation method of the cellulose nanofibrils at present due to the advantages of uniform quality, high product yield and the like, but the high-pressure homogenization method also has the defects of machine service life damage, limited production efficiency and high energy consumption. It is very important to provide a method for simply and efficiently preparing the nanofibrils.

Disclosure of Invention

The invention aims to provide a preparation method of jatropha curcas-based nano paper pulp, aiming at the defects of the existing nano paper preparation technology, the method reasonably utilizes a large amount of waste jatropha curcas branches every year, and prepares nano paper in a simple, low-cost and low-energy consumption mode, so that the waste branches are converted into high-added-value nano materials such as flexible organic light-emitting diodes, flexible solar cell substrate materials and the like.

In order to achieve the purpose, the invention adopts the following technical scheme:

a preparation method of Jatropha curcas base nano paper pulp comprises the following steps:

(1) slicing the jatropha curcas branches into slices with the thickness of 10-400 microns along the growth direction, and ensuring that each slice contains a wood channel cavity;

(2) placing 100 parts of slices in bacteria or enzyme for fermentation, wherein the selected fermentation environment is suitable for the growth environment of corresponding bacteria or the activity environment of enzyme;

(3) soaking and bleaching the fermented slices with a sodium hypochlorite solution;

(4) and (3) flatly spreading the bleached slices, and compressing the slices by adopting a plate press to control the pressure of 10-15MPa to obtain the transparent nano paper.

In the preparation method of the jatropha curcas-based nano paper pulp, in the step (2), the using amount of the bacteria is 1-10 parts, and the bacteria is one or more of white rot fungi, genetically engineered bacteria, trichoderma reesei, brown rot fungi and soft rot fungi.

In the preparation method of the jatropha curcas-based nano paper pulp, in the step (2), the enzyme is 5-10 parts, and the enzyme is one or more of white rot fungus lignocellulose enzyme, cellulase, xylanase produced by trichoderma reesei, polyphenol oxidase, laccase, hydrogen peroxide generating enzyme and wakeup reductase.

The preparation method of the jatropha curcas base nano paper pulp comprises the step (2), wherein the fermentation days are 15-30 days.

The preparation method of the jatropha curcas base nano paper pulp comprises the step (3), wherein the concentration of a sodium hypochlorite solution for soaking and bleaching is 10-40%, the soaking time is 30-120 minutes, and the temperature is 30-60 ℃.

Compared with the prior art, the invention has the beneficial effects that:

(1) the jatropha curcas-based nano paper is prepared by taking the waste jatropha curcas branches as raw materials, so that the cost is saved, waste is changed into wealth, and environmental pollution and resource waste are reduced.

(2) The preparation process is simple, each plane is guaranteed to contain the wood channel cavity by cutting the branches, the hollow structure of the wood channel cavity can guarantee that the thickness of the thin layer can be greatly reduced in the later compression process, and the cellulose in the plane is oriented along the growth direction, so that the nano paper is endowed with certain strength.

(3) The lignin is removed by adopting a fermentation mode, and the method is simple and environment-friendly.

Detailed Description

The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.

It is to be noted that the parts of the materials used in the following examples are all parts by weight.