CN101289821A - Paper pulp and paper sheets made form brown algae and making method thereof - Google Patents
Paper pulp and paper sheets made form brown algae and making method thereof Download PDFInfo
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- CN101289821A CN101289821A CNA2008100107179A CN200810010717A CN101289821A CN 101289821 A CN101289821 A CN 101289821A CN A2008100107179 A CNA2008100107179 A CN A2008100107179A CN 200810010717 A CN200810010717 A CN 200810010717A CN 101289821 A CN101289821 A CN 101289821A
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- paper
- paper pulp
- brown alga
- sodium alginate
- curing agent
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Abstract
The invention discloses a method for making paper pulp by utilizing brown alga. The method comprises the following steps that: brown alga are treated by diluted acids and have sodium acetylide extracted by alkali extractant; sodium acetylid solution is added with other auxiliary agents and solidified into gelatinous fibers by firming agent; gelatinous fibers are turned into paper pulp by beating, and the paper pulp is used to make paper by the conventional method. The method of the invention has the advantages of saving wood, protecting forest resources, greatly saving energy sources due to the reduction of a boiling step and avoiding the environmental pollution due to the reduced use of chemicals.
Description
Technical field
The present invention relates to paper pulp and paper and manufacture method thereof, relate in particular to and utilize thalassophyte brown alga rather than timber as making paper pulp and the material of paper and the manufacture method of paper pulp and paper thereof.
Background technology
The main raw material of tradition papermaking is lumber fibre and herbaceous plant fiber.The fifties is subjected to the influence of the former Soviet Union, and China has proposed the policy of " based on grass ", has continued to use half a century always.Facts have proved that the policy of " based on grass " has had a strong impact on the development of China's paper industry, and paid great cost.So national relevant trade management department proposes, and progressively realizes based on lumber fibre, enlarges waste paper and recycles, rationally use the strategic thought of the raw material mix adjustment of non-wood fibrous raw material.But China's forest-covered area has only 12% of area, and afforestation rate occupies the 120th in the world, timber resources wretched insufficiency.The paper making raw material scarcity of resources has become the bottleneck of restriction China paper industry development.Certainly, this also is a worldwide problem.No matter and use lumber fibre or herbaceous plant fiber all will use a large amount of chemical substances, consume a large amount of waters and produce a large amount of harmful substances and sewage, serious environment pollution expends a large amount of energy simultaneously.For many years, paper industry has become the heavy calamity industry of contaminated environment and consumes resources, the energy.Though can be administered now, spend great amount of manpower and material resources and fund, have a strong impact on development and national economy and human settlement's harmony.
The main chemical composition of tradition papermaking plant fiber material comprises cellulose, hemicellulose and lignin; Submember comprises resin etc.Cellulose is present in the cell membrane of plant, is the main component of string, also is the main component in the paper pulp.It is by the straight chain shape macromolecule carbohydrate that thousands of glucosyl groups are formed, and molecular formula is (C
6H
10O
5) n, n represents the number of glucosyl group.Content of cellulose is high more in the raw material, and paper pulp yield is high more, and paper strength is big more, and quality is good more.Hemicellulose is low molecule carbohydrate, is made up of two or more monosaccharide groups, has side chain, is present in the cell membrane, keeps in paper-making process because of helping making beating as far as possible.And lignin mainly is present in fiber intercellular layer and the cell membrane, is the non-carbohydrate of aromatic series with phenylpropyl alcohol alkane skeleton, is not linear molecule, but as the solid netted molecule of hornet's nest.Because lignin has harmful effect to paper strength, is removed in paper-making process as far as possible.Also, in traditional paper-making process, expend a large amount of chemicalss, cause serious environmental to pollute just in order to remove lignin as far as possible.
In order to solve the consumes resources that traditional papermaking exists and the energy, contaminated environment two big drawbacks, the application's applicant think reform on paper making raw material, to innovate be a basic road.The tradition paper making raw material all is a terrestrial plant, can sea-plant papermaking so? application number is paper pulp and paper and the manufacture method thereof that 200480033440.1 Patent publish Korea S inventor makes with the red algae in the marine alga.But this method needs to make paper pulp under hot conditions, expends the energy.The application's applicant has noticed the brown alga in the marine alga.Making paper pulp with brown alga can carry out under the condition of gentleness, saves the energy.
Brown alga is a macro, has an appointment 250 to belong to, and 1,500 kind mainly is distributed in temperate zone and waters, frigid zone.Wild bulk kelp can grow to 60-70 rice, forms " submarine forest ", and natural resources is extremely abundant.Do not have unicellular kind in the brown alga, be the many cells frond.Many types in the brown alga have realized artificial cultivation, and as sea-tangle, undaria pinnitafida, Sargassum fusiforme (Harv.) Setch etc., output is huge.And China such as sea-tangle begin artificial cultivation from the fifties, and cultivation technique occupies the leading level in the world, have become cultivation state the biggest in the world, and output accounts for half of Gross World Product.Wild sea-tangle growth period is 2 years, and artificial cultivation growth period only is 1 year.Brown alga contains special algin, and its content accounts for the 20-30% of the dry weight of brown alga own.
Brown alga is a thalassophyte, and its eucaryotic cell structure and chemical composition and terrestrial plant have many similarities.Algal polysaccharides is a most important constituent in the brown alga, also is the of paramount importance part of the algae bio utilization of resources so far.According to situation about distributing in frond, can be divided three classes: outermost layer is a cell wall polysaccharides, mainly is cellulose, hemicellulose; Next is the mucopolysaccharide-algin that is filled between cell wall polysaccharides; The 3rd class is to be present in intracellular storage polysaccharide-marine alga starch.What have value with brown alga papermaking is sodium alginate in cell wall polysaccharides (cellulose, hemicellulose) and mucopolysaccharide---the algin, particularly algin.
Algin has similarity with the function and the effect of lignin in the terrestrial plant cell in alga cells, promptly be filled in the cell membrane, as glue fiber is bonded together the formation plant one by one.But its structural form is fully different with the effect in papermaking.Lignin is solid netted molecule, is not linear molecule; And algin is the linear molecule that can aggregate into long-chain.Lignin is removed in pulping and papermaking processes as far as possible; And that algin plays a part in brown alga papermaking is leading, is main component.Algin refers generally to alginate, and prevailing is sodium alginate (NaALg), is the main component that all contains in all brown algas.Alginic acid is made of two kinds of construction units of guluronic acid (being designated as the G section) and its stereoisomer mannuronic acid (being designated as the M section), these two kinds of construction units pass through α-1 in three kinds of modes (MM section, GG section and MG section), the link of 4 glycosidic bonds, thus a kind of unbranched linear block copolymers formed.Alginic acid is easy to combine with some bivalent cations, forms aquagel fibre.Carboxyl on its 6th combines with sodium ion, has just constituted the alginic acid sodium salt.The sodium alginate molecular formula is (C
6H
7O
6Na) n.Proterties is white or faint yellow unsetting powder, and odorless is tasteless, soluble in water, is insoluble to alcohol etc.It is cellulose that the main component of terrestrial plant fibrous raw material is used in tradition papermaking, and its molecular structure is a straight chain shape linear structure; The main component of brown alga paper making raw material is a Na-alginate, and its molecular structure also is the linear structure that aggregates into long-chain, therefore, becomes possibility with brown alga for raw pulp papermaking.The application's applicant utilizes sodium alginate to be main raw material, adds other auxiliary agent, through repeatedly experiment, has produced paper.
Summary of the invention
Technical problem
The purpose of this invention is to provide a kind of conserving forests, and can save the energy, antipollution paper pulp and paper and manufacture method thereof.
Technical scheme
The invention provides a kind of method of utilizing brown alga to make paper pulp, described method comprises the steps:
1, sodium alginate extracts
Insoluble algin mainly exists with the calcium alginate form in frond.Adopt aqueous slkali (sodium carbonate liquor) to handle, make it be converted into the sodium alginate of solubility.This is an ion exchange process:
Ca(ALg)
2+2Na
+→2NaALg+Ca
++
At first former algae (dry product need be softening through soaking) is cleaned up, shred to 5-10mm.
For making recovery rate higher, handle with diluted acid earlier, calcium alginate is converted into alginic acid:
Ca(ALg)
2+2H
+→HALg+Ca
++
HALg+Na
+→NaALg+H
+
Specifically be that brown alga is stirred 30min in the sulfuric acid of 0.1mol/L or hydrochloric acid solution, temperature is a room temperature to 50 ℃, separates then.
Painted in order to reduce, use formalin further to handle.Brown alga is immersed in the formaldehyde weak solution of 0.1%-0.4% and stirs, treatment temperature is a room temperature to 50 ℃, and the processing time is about 15-30min, separates then.
Alkaline extraction is the key of whole extraction process, and the most frequently used extractant is a sodium carbonate liquor.The brown alga raw material of pre-treatment is stirred in about 1.5% sodium carbonate liquor, and temperature is controlled at 50-95 ℃, processing time 1-2h.When extraction is complete, obtain the very solution of thickness.
The insoluble residue of part is still arranged except that sodium alginate in the solution after the extraction, and its major part is a cellulose.Whole solution is obtained the mixed solution of sodium alginate and cellulosic uniform thickness after colloid mill grinds, can be directly used in production.High as paper is required, further precision processing, particularly decolouring.
2, batching, homogeneous
Sodium alginate is harder crisp, and brute force is lower, need to add paper making additive, and such as dry strength agent (sodium cellulose glycolate etc.), softener (glycerol etc.) and other auxiliary agent.
The sodium alginate water soluble forms the jelly of thickness.The concentration of sodium alginate generally is controlled at below 2% during batching, and other auxiliary agent adds as required by a certain percentage.
The material of solubility is fully dissolved and mix, add again and fill out insoluble filler (as talcum powder etc.).For making its abundant mixing, need to handle through colloid mill or other homogenizer homogeneous.
3, fibration is handled
Sodium alginate soln has a characteristic, promptly combines the water-fast marine alga gelatinous fibre of curable formation with bivalent cation.Contain Ca in employing
++The aqueous solution when being curing agent, the G unit and the Ca of sodium alginate
++Generate " egg-box " structure, form three-dimensional space net structure, separate out thereby be transformed into gelatinous fibre.Concrete operations are that (as accompanying drawing) makes sodium alginate soln (1) by in the curing groove (3) of hopper (2) below the aperture of bottom flows into or splashes into, and are solidified into gelatinous fibre (6).The curing agent that solidifies in the groove is CaCl
2The aqueous solution (4), its concentration are 2% to 6%.Solidify the screw (5) that groove one side is equipped with driven by motor, so that curing agent flows.
4, gelatinous fibre is broken into required paper pulp through beater.
The invention provides a kind of method of making paper, this method comprises: utilize brown alga to prepare paper pulp according to said method, and utilize described paper pulp to make paper.The invention provides the paper of making according to this method.
The invention provides a kind of method of making paper, this method comprises: utilize brown alga to prepare paper pulp according to said method, the preparation wood pulp mixes above-mentioned two or more paper pulp, and utilizes the mixture of described paper pulp to make paper.The invention provides the paper of making according to this method.
The paper pulp that obtains can be made paper according to common paper technology.
Description of drawings
1-sodium alginate soln 2-hopper 3-solidifies groove
The screw 6-gelatinous fibre of 4-curing agent calcium chloride water 5-driven by motor
The specific embodiment
With the method for brown alga papermaking, preparation process is as follows:
1, will put into 500ml water by sodium alginate 10g and the auxiliary agent sodium carboxymethylcellulose 5g that brown alga is extracted, separate, get solution A in dissolved;
2, in solution A, add filler talcum powder 6g and mix, get mixed liquid B;
3, separate in 1000ml water calcium chloride 50g is dissolved, curing agent C;
4, mixed liquid B is slowly flowed into or splashes among the curing agent C, get strip or graininess gel;
5, in beater, put 500ml water, and add glycerol 3g, mix; 1/10 of above-mentioned gel is put into beater pull an oar, promptly get brown alga paper pulp.
6, above-mentioned brown alga paper pulp is copied through 100 mesh standard sieves made brown alga paper.
Application the present invention makes paper pulp and paper has the following advantages:
1, compare the brown alga low price with timber, and growth cycle is very short;
2, use brown alga papermaking, to save timber has been protected the forest reserves, is conducive to control global warming;
3, promote the marine alga artificial cultivation, promote the economic development of coastal area;
4, with timber papermaking compare, use brown alga papermaking can greatly reduce the chemicals that uses for removing lignin, reduce ring Environment pollution;
5, with timber papermaking compare, use brown alga papermaking not need high pressure, thermophilic digestion, energy savings.
Claims (9)
1, a kind of paper pulp, the raw material that it is characterized in that making paper pulp is a brown alga.
2, the paper of making according to the described paper pulp of claim 1.
3, a kind of method of utilizing brown alga to make paper pulp, it comprises:
Brown alga is handled with diluted acid;
Go out sodium alginate with alkaline extraction again;
In sodium alginate soln, add other auxiliary agent, and fully dissolve, mix;
Utilize curing agent to make the sodium alginate soln that adds auxiliary agent be solidified into gelatinous fibre;
Gelatinous fibre is broken into paper pulp.
4, method as claimed in claim 3 is characterized in that: sodium alginate soln flows in the curing agent that flows;
5, method as claimed in claim 3 is characterized in that: sodium alginate soln splashes in the mobile curing agent;
6, as arbitrary described method in the claim 3 to 5, it is characterized in that: described curing agent is the solvent that contains bivalent cation.
7, as arbitrary described method in the claim 3 to 6, it is characterized in that: a side is equipped with the screw of driven by motor in the curing groove at described curing agent place, flows to promote curing agent.
8, a kind of method of making paper, it comprises:
Utilize brown alga to prepare paper pulp according to the arbitrary described method of claim 3 to 7, and utilize described paper pulp to make paper.
9, a kind of method of making paper, it comprises:
Utilize brown alga to prepare paper pulp according to the arbitrary described method of claim 3 to 7;
The preparation wood pulp;
Above-mentioned two or more paper pulp are mixed, and utilize the mixture of described paper pulp to make paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100107179A CN101289821A (en) | 2008-03-21 | 2008-03-21 | Paper pulp and paper sheets made form brown algae and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100107179A CN101289821A (en) | 2008-03-21 | 2008-03-21 | Paper pulp and paper sheets made form brown algae and making method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101289821A true CN101289821A (en) | 2008-10-22 |
Family
ID=40034255
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|---|---|---|---|
| CNA2008100107179A Pending CN101289821A (en) | 2008-03-21 | 2008-03-21 | Paper pulp and paper sheets made form brown algae and making method thereof |
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|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587191A (en) * | 2012-03-01 | 2012-07-18 | 中国科学院海洋研究所 | Method for making paper by macroalgae |
| CN104783715A (en) * | 2015-05-07 | 2015-07-22 | 罗福仲 | Toilet paper easily dissolving in water |
| CN105133415A (en) * | 2015-07-09 | 2015-12-09 | 东岚高科(青岛)有限公司 | Environmentally-friendly marine organism base flame retardation paper and production method thereof |
| CN106223093A (en) * | 2016-09-19 | 2016-12-14 | 三峡大学 | Waste paper weight slag segregation apparatus |
| CN110714239A (en) * | 2019-10-18 | 2020-01-21 | 青岛大学 | Method for preparing multifunctional alginic acid fiber filament and short fiber from marine algae |
-
2008
- 2008-03-21 CN CNA2008100107179A patent/CN101289821A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587191A (en) * | 2012-03-01 | 2012-07-18 | 中国科学院海洋研究所 | Method for making paper by macroalgae |
| CN102587191B (en) * | 2012-03-01 | 2016-03-16 | 中国科学院海洋研究所 | A kind of method utilizing tangleweed papermaking |
| CN104783715A (en) * | 2015-05-07 | 2015-07-22 | 罗福仲 | Toilet paper easily dissolving in water |
| CN105133415A (en) * | 2015-07-09 | 2015-12-09 | 东岚高科(青岛)有限公司 | Environmentally-friendly marine organism base flame retardation paper and production method thereof |
| CN106223093A (en) * | 2016-09-19 | 2016-12-14 | 三峡大学 | Waste paper weight slag segregation apparatus |
| CN106223093B (en) * | 2016-09-19 | 2018-08-14 | 三峡大学 | Waste paper weight slag separator |
| CN110714239A (en) * | 2019-10-18 | 2020-01-21 | 青岛大学 | Method for preparing multifunctional alginic acid fiber filament and short fiber from marine algae |
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| DD01 | Delivery of document by public notice |
Addressee: Liu Huimin Document name: Notice of application for publication of patent for invention and entry into the substantive examination procedure |
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Open date: 20081022 |