CN112593433B - Papermaking method using mulberry bark as raw material - Google Patents
Papermaking method using mulberry bark as raw material Download PDFInfo
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- CN112593433B CN112593433B CN202011236097.8A CN202011236097A CN112593433B CN 112593433 B CN112593433 B CN 112593433B CN 202011236097 A CN202011236097 A CN 202011236097A CN 112593433 B CN112593433 B CN 112593433B
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- mulberry bark
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/003—Pulping cellulose-containing materials with organic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Sanitary Thin Papers (AREA)
Abstract
The invention discloses a papermaking method using mulberry bark as a raw material, which comprises the following steps: removing impurities from mulberry bark, crushing, and removing soluble substances in the bark of the crushed mulberry bark by adopting a steam distillation mode; placing mulberry bark in a sodium carbonate solution, preserving heat and soaking, taking out the mulberry bark, uniformly spraying an acetic acid solution on the surface of the mulberry bark, stirring while spraying, and standing after spraying; dispersing mulberry bark in distilled water, adding a complex enzyme for reaction, taking out the mulberry bark, washing and airing; adding egg white liquid and insect glue solution into mulberry bark, fully stirring, grinding into thick liquid, and then cooking and bleaching to obtain paper pulp; the paper pulp is sequentially subjected to paper making, dehydration, squeezing and drying, and finally finished into paper. The invention has the advantages that: the paper softness that makes is good, promotes glossiness, smoothness and the intensity of paper, reduces the dust degree, reduces the paper fluffing phenomenon to keep suitable blotting of paper, water absorption performance, promote the result of use.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to a papermaking method using mulberry bark as a raw material.
Background
Mulberry belongs to deciduous trees or shrubs and can reach a height of 15 m. The tree body is rich in serum and the bark is yellow brown. She Luanxing to broad oval, cusp, round base, or shallow heart, with rough serrations on the edges and sometimes irregular splits. The leaf surface has no hair, luster and fluffy on the vein of the leaf back. Male and female variant, 5 months flowering, fruit of Moica Ulmus Moench. The mature period of the fruit is 6-7 months, the fig is oval or cylindrical, and the fruit is black purple or white. Pleased with light, slightly resistant to yin when young. It is fond of warm and humid climate and cold resistance. Drought resistance and strong water-moisture resistance.
In ancient China, the technical flow of papermaking by using mulberry bark as a raw material exists, and the prepared mulberry bark paper has attractive appearance and good hand feeling and can be stored for a long time. However, conventional processes for making paper from mulberry bark have some drawbacks, such as softness, smoothness, and high dustiness of the paper.
Disclosure of Invention
The invention aims to provide a papermaking method using mulberry bark as a raw material, which overcomes the defects of general softness and smoothness, high dust degree and the like of the prepared paper in the conventional papermaking method using the mulberry bark as the raw material.
The invention achieves the above purpose through the following technical scheme:
a method for making paper with mulberry bark as raw material includes such steps as
(1) Removing impurities from mulberry bark, crushing, and removing soluble substances in the bark of the crushed mulberry bark by adopting a steam distillation mode;
(2) Placing mulberry bark in a sodium carbonate solution with the mass concentration of 2-2.5%, soaking at the temperature of 60-75 ℃ for 10-12h, taking out the mulberry bark, uniformly spraying an acetic acid solution with the mass concentration of 2.8-3.5% on the surface of the mulberry bark, stirring while spraying, and standing at the temperature of 0-5 ℃ for 1-5h after spraying;
(3) Dispersing mulberry bark in distilled water, adding complex enzyme, reacting at 55-65 deg.C for 3-6 hr, taking out mulberry bark, washing, and air drying;
(4) Adding egg white liquid accounting for 0.1-2% of the weight of the mulberry bark and shellac liquid accounting for 0.5-5% of the weight of the mulberry bark into the mulberry bark, fully stirring, grinding into pulp, and then cooking and bleaching to obtain paper pulp;
(5) The paper pulp is sequentially subjected to paper making, dehydration, squeezing and drying, and finally finished into paper.
The further improvement is that the egg white is one of eggs, duck eggs or goose eggs.
The further improvement is that the shellac solution is prepared by dissolving shellac in an organic solvent.
The further improvement is that the organic solvent is one combination of methanol and propanol, or ethanol and ethyl ester, or methanol and acetone.
The further improvement is that the complex enzyme consists of pectinase, xylanase and ligninase, and the mass ratio of the components is pectinase to xylanase to ligninase =1-2:1-2:1.
The further improvement is that after the pulp grinding, the obtained pulp is filtered and sieved by a 200-mesh sieve, and the pulp which is not filtered is finely ground until the pulp can pass through the 200-mesh sieve.
The invention also provides paper which is made by the papermaking method.
The invention has the beneficial effects that:
(1) The method comprises the steps of firstly, carrying out alkali washing on the mulberry bark by using a sodium carbonate solution to promote the solution to enter bark tissues, increasing intercellular gaps and improving the pH value of the bark, then spraying the mulberry bark by using an acetic acid solution, standing at a low temperature after spraying to enable the acetic acid solution to quickly permeate into the bark, neutralizing residual sodium carbonate in the bark and increasing the intercellular gaps, thereby playing a role in softening a fiber structure and enabling the prepared paper to have good softness.
(2) The degumming treatment is carried out by using compound enzymes such as pectinase, xylanase, ligninase and the like, so that not only can pectin be effectively removed, but also other non-cellulose substances such as hemicellulose, lignin and the like can be effectively removed, and the paper quality is improved.
(3) Egg white liquid and shellac liquid are added into paper pulp, and the synergistic effect of the egg white liquid and shellac liquid can effectively improve the glossiness, smoothness and softness of paper, reduce the dust degree, reduce the paper surface fluffing phenomenon, and keep the suitable ink absorption and water absorption performance of the paper, thereby improving the use effect.
Detailed Description
The present application is described in further detail below with reference to examples, and it should be noted that the following detailed description is provided for further explanation of the present application and should not be construed as limiting the scope of the present application, and that certain insubstantial modifications and adaptations of the present application may be made by those skilled in the art based on the above-mentioned disclosure.
Example 1
A method for making paper with mulberry bark as raw material includes such steps as
(1) Removing impurities from mulberry bark, crushing, and removing soluble substances in the bark of the crushed mulberry bark by adopting a steam distillation mode;
(2) Placing mulberry bark in a sodium carbonate solution with the mass concentration of 2%, soaking at the temperature of 60 ℃ for 12h, taking out the mulberry bark, uniformly spraying an acetic acid solution with the mass concentration of 2.8% on the surface of the mulberry bark, stirring while spraying, and standing at the temperature of 0 ℃ for 1h after spraying;
(3) Dispersing mulberry bark in distilled water, adding complex enzyme, reacting at 55 deg.C for 6 hr, taking out mulberry bark, washing, and air drying; the compound enzyme consists of pectinase, xylanase and ligninase, and the mass ratio of the pectinase to the xylanase to the ligninase = 1;
(4) Adding egg white liquid accounting for 0.1% of the weight of the mulberry bark and shellac liquid accounting for 0.5% of the weight of the mulberry bark into the mulberry bark, fully stirring, grinding into thick liquid, filtering and screening the obtained paper pulp by using a 200-mesh sieve after grinding into thick liquid, finely grinding the paper pulp which is not filtered until the paper pulp can pass through the 200-mesh sieve, and then cooking and bleaching to obtain the paper pulp; egg white liquid is egg, and shellac liquid is prepared by dissolving shellac in organic solvent selected from methanol and propanol;
(5) The paper pulp is sequentially subjected to paper making, dehydration, squeezing and drying, and finally finished into paper.
Example 2
A method for making paper with mulberry bark as raw material includes such steps as
(1) Removing impurities from mulberry bark, crushing, and removing soluble substances in the bark of the crushed mulberry bark by adopting a steam distillation mode;
(2) Placing mulberry bark in a sodium carbonate solution with the mass concentration of 2.2%, soaking for 11h at the temperature of 70 ℃, taking out the mulberry bark, uniformly spraying an acetic acid solution with the mass concentration of 3% on the surface of the mulberry bark, stirring while spraying, and standing for 2h at the temperature of 2 ℃;
(3) Dispersing mulberry bark in distilled water, adding complex enzyme, reacting at 60 deg.C for 4 hr, taking out mulberry bark, washing, and air drying; the compound enzyme consists of pectinase, xylanase and ligninase, and the mass ratio of the pectinase to the xylanase to the ligninase = 1.5;
(4) Adding egg white liquid accounting for 1% of the mulberry bark and shellac liquid accounting for 2.5% of the mulberry bark into the mulberry bark, fully stirring, grinding into thick liquid, filtering and screening the obtained paper pulp by using a 200-mesh sieve after grinding into thick liquid, finely grinding the paper pulp which is not filtered until the paper pulp can pass through the 200-mesh sieve, and then cooking and bleaching to obtain the paper pulp; the egg white liquid is duck egg, and the shellac liquid is prepared by dissolving shellac in organic solvent selected from ethanol and ethyl ester;
(5) The paper pulp is sequentially subjected to paper making, dehydration, squeezing and drying, and finally finished into paper.
Example 3
A method for making paper with mulberry bark as raw material includes such steps as
(1) Removing impurities from mulberry bark, crushing, and removing soluble substances in the bark of the crushed mulberry bark by adopting a steam distillation mode;
(2) Placing mulberry bark in a sodium carbonate solution with the mass concentration of 2.5%, soaking at the temperature of 75 ℃ for 10h, taking out the mulberry bark, uniformly spraying an acetic acid solution with the mass concentration of 3.5% on the surface of the mulberry bark, stirring while spraying, and standing at the temperature of 5 ℃ for 5h after spraying;
(3) Dispersing mulberry bark in distilled water, adding complex enzyme, reacting at 65 deg.C for 3 hr, taking out mulberry bark, washing, and air drying; the compound enzyme consists of pectinase, xylanase and ligninase, and the mass ratio of the pectinase to the xylanase to the ligninase = 2;
(4) Adding egg white liquid accounting for 2% of the mass of the mulberry bark and shellac liquid accounting for 5% of the mass of the mulberry bark into the mulberry bark, fully stirring, then grinding into thick liquid, filtering and screening the obtained paper pulp by using a 200-mesh sieve after grinding into thick liquid, finely grinding the paper pulp which is not filtered until the paper pulp can pass through the 200-mesh sieve, and then cooking and bleaching to obtain the paper pulp; the egg white liquid is goose eggs, and the shellac liquid is prepared by dissolving shellac in an organic solvent, wherein the organic solvent is methanol and acetone;
(5) The paper pulp is sequentially subjected to paper making, dehydration, squeezing and drying, and finally finished into paper.
Comparative example 1
Essentially the same procedure as in example 2, with the only difference that: egg white liquid and shellac liquid are not added before grinding.
Comparative example 2
Essentially the same procedure as in example 2, with the only difference that: no egg white liquid was added before grinding, only 3.5% shellac liquid was added.
Comparative example 3
Essentially the same procedure as in example 2, with the only difference that: no shellac solution was added before grinding, only 3.5% egg white solution was added.
To verify the effectiveness of the invention, the papers prepared in examples 1-3 above were subjected to a performance test comprising:
(1) testing the tensile index, adopting an L & W horizontal tensile tester, adjusting the pressure of equipment to be 2kg, placing the cut paper sample between two chucks of the equipment, automatically stretching the paper sample by the equipment until the paper sample is broken, reading the maximum tensile value on a display screen, wherein the unit N is the tensile index calculation formula of Y = F/(L.g). Times.1000, and Y-the tensile index is N.m/g; f-tensile, N; l-width of test pattern, mm; g-basis weight of paper, g/m2.
(2) Smoothness is detected according to the method of GB/T456-2002.
(3) Soft grade: the touch and kneading mode is judged, and the grade is divided into five grades (I grade, II grade, III grade, IV grade and V grade), and the higher the grade is, the worse the softness is.
(4) Whether the paper surface had fuzzing was observed.
(5) Dust degree: the degree of pulp dusting was determined according to GB/T1541-2007 standard.
(6) Ink absorbency was measured according to the method of GB/T12911-1991.
As can be seen from the above table, the paper pulp is prepared by alkali washing, acid washing, enzyme treatment and egg white liquid and shellac liquid adding, so that the tensile index of the prepared paper is more than 45 N.m/g, the smoothness is more than 118, the softness grade is I grade, the paper surface is not fluffed, and the dust degree is less than 84mm 2 The ink absorbency/kg and the ink absorbency are maintained at about 37-40mL/100g, and the quality is good.
It can be seen from comparison between example 2 and comparative examples 1-3 that the effect of adding egg white and shellac solution at the same time on smoothness, softness, paper surface effect, dustiness, and ink absorbency of the paper is not achieved by adding egg white and shellac solution alone or by adding egg white and shellac solution alone, which indicates that adding egg white and shellac solution at the same time can play a role of mutual promotion, which is related to the lubricating effect, dispersing effect, and adhesive effect of egg white and shellac solution, but is not essential.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. A papermaking method using mulberry bark as a raw material is characterized in that: comprises the steps of
(1) Removing impurities from mulberry bark, crushing, and removing soluble substances in the bark from the crushed mulberry bark by adopting a steam distillation mode;
(2) Placing cortex Mori in 2-2.5% sodium carbonate solution, soaking at 60-75 deg.C for 10-12 hr, taking out cortex Mori, spraying 2.8-3.5% acetic acid solution on the surface of cortex Mori, stirring while spraying, and standing at 0-5 deg.C for 1-5 hr;
(3) Dispersing mulberry bark in distilled water, adding complex enzyme, reacting at 55-65 deg.C for 3-6 hr, taking out mulberry bark, washing, and air drying;
(4) Adding egg white liquid accounting for 0.1-2% of the weight of the mulberry bark and shellac liquid accounting for 0.5-5% of the weight of the mulberry bark into the mulberry bark, fully stirring, grinding into pulp, and then cooking and bleaching to obtain paper pulp; the egg white is one of eggs, duck eggs or goose eggs, and the shellac solution is prepared by dissolving shellac in an organic solvent;
(5) The paper pulp is sequentially subjected to paper making, dehydration, squeezing and drying, and finally finished into paper.
2. The method for manufacturing paper using mulberry bark as a raw material according to claim 1, wherein: the organic solvent is one of methanol and propanol, ethanol and ethyl ester, or methanol and acetone.
3. The method for manufacturing paper using mulberry bark as raw material according to claim 1, wherein: the compound enzyme consists of pectinase, xylanase and ligninase according to the mass ratio of pectinase to xylanase to ligninase =1-2:1-2:1.
4. The method for manufacturing paper using mulberry bark as a raw material according to claim 1, wherein: after grinding, the pulp obtained is filtered and sieved by a 200-mesh sieve, and the pulp which is not filtered is finely ground until the pulp can pass through the 200-mesh sieve.
5. A paper sheet characterized by: the paper sheet is made by the papermaking process of any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236097.8A CN112593433B (en) | 2020-11-09 | 2020-11-09 | Papermaking method using mulberry bark as raw material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011236097.8A CN112593433B (en) | 2020-11-09 | 2020-11-09 | Papermaking method using mulberry bark as raw material |
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| CN112593433A CN112593433A (en) | 2021-04-02 |
| CN112593433B true CN112593433B (en) | 2023-03-10 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB525512A (en) * | 1939-02-23 | 1940-08-29 | B B Chem Co Ltd | Improvements in or relating to the finishing of surfaces or coating compositions adapted for use therein |
| CN101285212A (en) * | 2008-05-27 | 2008-10-15 | 广西大学 | Degumming process for mulberry fibre by bacilli compound bacteria |
| JP2013198424A (en) * | 2012-03-23 | 2013-10-03 | Nippon Paper Industries Co Ltd | Treatment method of plant-based raw material |
| CN108867160A (en) * | 2018-07-23 | 2018-11-23 | 合肥龙发包装有限公司 | A kind of high-intensitive food wrapper and preparation method thereof with antibiotic property |
-
2020
- 2020-11-09 CN CN202011236097.8A patent/CN112593433B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB525512A (en) * | 1939-02-23 | 1940-08-29 | B B Chem Co Ltd | Improvements in or relating to the finishing of surfaces or coating compositions adapted for use therein |
| CN101285212A (en) * | 2008-05-27 | 2008-10-15 | 广西大学 | Degumming process for mulberry fibre by bacilli compound bacteria |
| JP2013198424A (en) * | 2012-03-23 | 2013-10-03 | Nippon Paper Industries Co Ltd | Treatment method of plant-based raw material |
| CN108867160A (en) * | 2018-07-23 | 2018-11-23 | 合肥龙发包装有限公司 | A kind of high-intensitive food wrapper and preparation method thereof with antibiotic property |
Non-Patent Citations (2)
| Title |
|---|
| 生物技术在制浆造纸工业的应用与发展;凌永龙;《上海造纸》;19960930(第03期);全文 * |
| 耐温耐碱木聚糖果胶复合酶预处理对桑枝全秆形态、成分和制浆特性的影响;杨艳等;《纤维素科学与技术》;20150930;第23卷(第03期);第1页 * |
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