CN103015264A - Paper straightening agent prepared from glucomannan and production and use method of paper straightening agent - Google Patents
Paper straightening agent prepared from glucomannan and production and use method of paper straightening agent Download PDFInfo
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- CN103015264A CN103015264A CN2013100049600A CN201310004960A CN103015264A CN 103015264 A CN103015264 A CN 103015264A CN 2013100049600 A CN2013100049600 A CN 2013100049600A CN 201310004960 A CN201310004960 A CN 201310004960A CN 103015264 A CN103015264 A CN 103015264A
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Abstract
The invention discloses a paper straightening agent prepared from glucomannan and a production and use method of the paper straightening agent. The production and use method comprises the steps of: oxidizing glucomannan through oxidization by using TEMPO and NaBr as oxidizing mediums and NaClO as an oxidizing agent under the alkali condition to prepare the paper straightening agent, wherein the content of oxygen element of the paper strengthening agent is 51.84-54.64 percent; and in a papermaking process, adding the paper strengthening agent accounting for 1-4 wt% of oven dry paper pulp, adding aluminum sulfate accounting for 0.3-0.7 wt% of oven dry paper pulp and controlling the pH value of net applying paper pulp to 5-7. According to the technical scheme, by using recycling plant industrial polysaccharide as a raw material, the recycling plant polysaccharide resource is comprehensively utilized.
Description
Technical field
The present invention relates to the paper strengthening agent technical field, particularly, relate to a kind of paper strengthening agent that utilizes the glucomannan preparation; The invention still further relates to the using method of utilizing glucomannan to prepare the production method of paper strengthening agent and utilizing the paper strengthening agent of glucomannan preparation.
Background technology
Along with improving constantly of the level of consumption, people are also more and more higher to the requirement of paper class and quality, and the raising of paper strength seems more and more important.How to improve the intensity of paper, satisfy people extremely urgent to low demand quantitative, high-grade paper.The raising of paper strength can be by pulling an oar, improve long stapled proportioning and realizing with reinforcing agent.By making beating with improve the intensity that ratio of long fiber improves paper and have more shortcoming, as power consumption is large, fiber filter is low, paper porosity reduces, deflection descends, tearability dies down etc.But then there are not the problems referred to above in the intensity that improves paper with reinforcing agent.In the paper industry, the use of paper making intensifier generally adopts inside to attach and outside covering with paint method.In general, paper strength be subjected between the intensity of pulp fiber own and the fiber or and coating between the impact of bond strength and area larger, the combination of paper pulp fiber then is the main cause that paper produces intensity.
Paper strengthening agent is that a class is in order to the combination between augmentor fiber, improve the chemicals of paper dry strength, general addition is very little, but the enhancing effect to paper is very large, and reinforcing agent commonly used has polyacrylamide, starch and derivative class, shitosan class, emulsion polymer class, resin glue etc. at present.Along with the paper demand increases considerably, use in a large number waste paper reclaiming slurry, straw pulp in recent years, the inadequate natural endowment of its fibre strength causes paper strength to descend.In this case, the new paper strengthening agent of exploitation is paid close attention to widely.
Summary of the invention
On the one hand, the object of the present invention is to provide a kind of paper strengthening agent, this reinforcing agent is used for improving interfibrous effective contact area, to strengthen the intensity of paper.
To achieve these goals, paper strengthening agent provided by the invention, by glucomannan under alkali condition, take TEMPO and NaBr as oxide isolation, NaClO is oxidant, makes through oxidation, and the oxygen element content of described paper strengthening agent is 51.84%～54.64%.
On the other hand, in order to obtain aforementioned paper strengthening agent, the present invention also aims to provide a kind of production method of paper strengthening agent.Can realize the comprehensive utilization of renewable plant polyose resource.
To achieve these goals, the production method of paper strengthening agent provided by the invention may further comprise the steps:
Glucomannan is added to the water, makes the suspension of 1wt%～5wt%, and the temperature of regulating described suspension is 20～30 ℃; In the suspension of abovementioned steps gained, add the TEMPO of described glucomannan 0.0025～0.0070 weight portion, the NaBr of 0.32～0.96 weight portion and the NaClO of 0.25～0.65 weight portion, regulating the pH value with aqueous slkali is 10～11, after the oxidation 20～60 minutes, after separating drying, make described paper strengthening agent.Described aqueous slkali is any or the aqueous solution more than two kinds in NaOH, potassium hydroxide, hydrogenation ammonium, the barium hydroxide.
In addition, the present invention also provides a kind of using method of paper strengthening agent: in paper making process, add the aforementioned paper strengthening agent of absolute dried paper pulp 1wt%～4wt%.
Further, the using method of described paper strengthening agent, in paper making process, the aluminum sulfate, the control online paper pulp pH value that also add absolute dried paper pulp 0.3wt%～0.7wt% are 5～7.
TEMPO described in the present invention is 2,2,6,6-tetramethyl-1-piperidines oxygen base free radical.
The beneficial effect that the present invention brings: adopt the TEMPO+NaBr+NaClO oxidation system, hydroxyl oxygen in the glucomannan is changed into carboxyl, when described paper strengthening agent adds to when manufacturing paper with pulp in the paper pulp, can strengthen the adhesion between the paper pulp fiber, thereby improve the physical strength of paper.Take renewable plant industry polysaccharide as raw material, realize the comprehensive utilization of renewable plant polyose resource.
The specific embodiment
Embodiment is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.
Embodiment 1: glucomannan is added to the water, makes the suspension of 1wt%, and the temperature of regulating described suspension is 30 ℃; Add the TEMPO of described glucomannan 0.0070 weight portion, the NaBr of 0.96 weight portion and the NaClO of 0.65 weight portion, regulating the pH value with sodium hydrate aqueous solution is 11, described glucomannan suspension is through oxidation after 20 minutes, add the ethanol cessation reaction, regulate pH value to 7 with HCl, add again ethanol, then centrifugal collecting precipitation, dry under the room temperature, obtain paper strengthening agent.The oxygen element content of the paper strengthening agent that obtains after tested, is 51.84%.Poplar sulfate pulp water is discongested rear making beating to 40 ° SR, be diluted to 2 ‰ concentration, the aluminum sulfate that under stirring condition, adds absolute dried paper pulp 0.3wt%, regulate the pH value to 7 of slurry, add the paper strengthening agent that absolute dried paper pulp 4wt% the present embodiment makes, after stirring, copy by national standard Law and to get quantitative 60g/m
2Page.Behind 105 ℃ of lower slaking 20min, equilibrium water conten 24h under the constant temperature and humidity condition surveys its intensity by national standard.
Embodiment 2: described glucomannan is added to the water, makes the suspension of 4wt%, and the temperature of regulating described suspension is 26 ℃; Add the TEMPO of described glucomannan 0.0045 weight portion, the NaBr of 0.68 weight portion and the NaClO of 0.45 weight portion, regulating the pH value with potassium hydroxide aqueous solution is 10.6, described glucomannan suspension is through oxidation after 30 minutes, add the ethanol cessation reaction, regulate pH value to 7 with HCl, add again ethanol, then collecting precipitation, dry under the room temperature, obtain paper strengthening agent.The oxygen element content of the paper strengthening agent that obtains after tested, is 53.12%.Poplar sulfate pulp water is discongested rear making beating to 40 ° SR, be diluted to 2 ‰ concentration, the aluminum sulfate that under stirring condition, adds absolute dried paper pulp 0.5wt%, regulate the pH value to 6 of slurry, add the paper strengthening agent that absolute dried paper pulp 2wt% the present embodiment makes, after stirring, copy by national standard Law and to get quantitative 60g/m
2Page.Behind 105 ℃ of lower slaking 20min, equilibrium water conten 24h under the constant temperature and humidity condition surveys its intensity by national standard.
Embodiment 3: described glucomannan is added to the water, makes the suspension of 3wt%, and the temperature of regulating described suspension is 25 ℃; Add the TEMPO of described glucomannan 0.0038 weight portion, the NaBr of 0.50 weight portion and the NaClO of 0.35 weight portion, regulating the pH value with baryta water is 10.5, described glucomannan suspension is through oxidation after 40 minutes, add the ethanol cessation reaction, regulate pH value to 7 with HCl, add again ethanol, then collecting precipitation, dry under the room temperature, make paper strengthening agent.The oxygen element content of the paper strengthening agent that obtains after tested, is 54.65%.Poplar sulfate pulp water is discongested rear making beating to 40 ° SR, be diluted to 2 ‰ concentration, the aluminum sulfate that under stirring condition, adds absolute dried paper pulp 0.5wt%, regulate the pH value to 5 of slurry, add the paper strengthening agent that absolute dried paper pulp 1wt% the present embodiment makes, after stirring, copy by national standard Law and to get quantitative 60g/m
2Page.Behind 105 ℃ of lower slaking 20min, equilibrium water conten 24h under the constant temperature and humidity condition surveys its intensity by national standard.
Embodiment 4: described glucomannan is added to the water, makes the suspension of 5wt%, and the temperature of regulating described suspension is 20 ℃; Add the TEMPO of described glucomannan 0.0025 weight portion, the NaBr of 0.36 weight portion and the NaClO of 0.25 weight portion, regulating the pH value with ammonium hydroxide aqueous solution is 10, described glucomannan suspension is through oxidation after 60 minutes, add the ethanol cessation reaction, regulate pH value to 7 with HCl, add again ethanol, then centrifugal collecting precipitation, dry under the room temperature, obtain described paper strengthening agent.The oxygen element content of the paper strengthening agent that obtains after tested, is 53.75%.Poplar sulfate pulp water is discongested rear making beating to 40 ° SR, be diluted to 2 ‰ concentration, the aluminum sulfate that under stirring condition, adds absolute dried paper pulp 0.7wt%, regulate the pH value to 5.5 of slurry, add the paper strengthening agent that absolute dried paper pulp 0.5wt% the present embodiment makes, after stirring, copy by national standard Law and to get quantitative 60g/m
2Page.Behind 105 ℃ of lower slaking 20min, equilibrium water conten 24h under the constant temperature and humidity condition surveys its intensity by national standard.
Reference examples: poplar sulfate pulp water is discongested rear making beating to 40 ° SR, be diluted to 2 ‰ concentration, under stirring condition, add the aluminum sulfate of absolute dried paper pulp 0.5wt%, regulate the pH value to 5 of slurry, after stirring, copy by national standard Law and to get quantitative 60g/m
2Page.Behind 105 ℃ of lower slaking 20min, equilibrium water conten 24h under the constant temperature and humidity condition surveys its intensity by national standard.
The sheet paper products that each embodiment and reference examples obtain, performance is as follows after tested:
Prepare the increase of the oxidization time of paper strengthening agent along with glucomannan as can be known by data in the table, the dry tensile strength of paper is in rising trend; Burst index increases to some extent but is not so good as dry tensile strength and increases obviously; Folding strength is remarkable ascendant trend, and tearability is on a declining curve.Oxidization time lengthens, and oxygen element content increases gradually, and hydrogen bond increases between fiber, and adhesion increases, and folding strength and bursting strength also increase thereupon.But the increase of oxidization time, the Glucomannan degree of polymerization reduces, so that tear index constantly reduces.20～60 minutes preferential oxidation time, has preferably technique effect.
The comparative example organizes one: on the basis of embodiment 3, change the addition of the paper strengthening agent that is made by embodiment 3, add respectively the paper strengthening agent of absolute dried paper pulp 0.5wt%, 1wt%, 2wt%, 3wt%, 4wt%.The sheet paper products that each reference examples obtains, performance is as follows after tested:
By data in the table as can be known, the increase of the paper strengthening agent addition that makes along with glucomannan, paper dry tensile strength, folding strength, bursting strength all present rise first after downward trend.Tear index then descends first and rises afterwards.The addition of the paper strengthening agent that preferably glucomannan makes is the 1wt%～3wt% of absolute dried paper pulp, has preferably technique effect.
The comparative example organizes two: on the basis of embodiment 2, regulate the addition of aluminum sulfate, the pH value of change slurry is 7 and 9.
By data in the table as can be known, be the 0.5wt% of absolute dried paper pulp in the addition of aluminum sulfate, pH is 5 o'clock, the paper performance that makes is better.
Substance, tensile index, tear index, burst index, folding strength among the present invention, test according to national standard (GB/T451.2-2002), national standard (GB/T22898-2008), national standard (GB/T455-2002) and national standard (GB/T454-2002), national standard (GB/T457-2008) method respectively; The elemental microanalysis method of paper strengthening agent adopts mass spectrum (Flash EA1112) to analyze C element, protium and the nitrogen element of reinforcing agent, remaining part is exactly oxygen element, element determination method reference literature: Zhang Yonggang, Zhang Yanwu, Zhang Haoqin, Deng. fixing of cellulose acetate modification and lipase. New Chemical Materials, 2009,37 (10): 60-62.
Obviously, the invention is not restricted to the above specific embodiment, also can in the spirit of claim of the present invention and specification restriction, carry out conversion and the improvement of various ways, can solve same technical problem, and obtain the technique effect of expection, therefore do not repeat.Those of ordinary skill in the art can be from content disclosed by the invention directly or all schemes of associating, as long as within the spirit that claim limits, also belong to protection scope of the present invention.
Claims (4)
1. paper strengthening agent is characterized in that: under alkali condition, take TEMPO and NaBr as oxide isolation, NaClO is oxidant, makes through oxidation by glucomannan, and the oxygen element content of described paper strengthening agent is 51.84%～54.64%.
2. a production method for preparing the described paper strengthening agent of claim 1 is characterized in that, may further comprise the steps:
Glucomannan is added to the water, makes the suspension of 1wt%～5wt%, and the temperature of regulating described suspension is 20～30 ℃; In the suspension of abovementioned steps gained, add the TEMPO of described glucomannan 0.0025～0.0070 weight portion, the NaBr of 0.32～0.96 weight portion and the NaClO of 0.25～0.65 weight portion, regulating the pH value with aqueous slkali is 10～11, after the oxidation 20～60 minutes, after separating drying, make described paper strengthening agent.
3. the using method of the described paper strengthening agent of claim 1 is characterized in that: in paper making process, add the described paper strengthening agent of absolute dried paper pulp 1wt%～4wt%.
4. the using method of the described paper strengthening agent of claim 3 is characterized in that: in paper making process, also add the aluminum sulfate of absolute dried paper pulp 0.3wt%～0.7wt%, the pH value of control online paper pulp is 5～7.
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| CN2013100049600A CN103015264A (en) | 2013-01-08 | 2013-01-08 | Paper straightening agent prepared from glucomannan and production and use method of paper straightening agent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892792A (en) * | 2015-05-22 | 2015-09-09 | 苏州大学 | Oxidized form alpha-1,4-oligo-glucuronic acid and preparation method and application thereof |
| CN106835821A (en) * | 2016-12-09 | 2017-06-13 | 苏州艾博迈尔新材料有限公司 | A kind of paper composite fortifier and preparation method thereof |
| CN109082937A (en) * | 2018-09-04 | 2018-12-25 | 南京林业大学 | A kind of paper strength Enhancement Method suitable for polyelectrolyte environment |
| CN110218267A (en) * | 2019-07-04 | 2019-09-10 | 汉邦环宇多糖生物科技（河源）有限公司 | A kind of Preparation method and use of iron-dextrin |
| CN113089368A (en) * | 2021-03-29 | 2021-07-09 | 上海昶法新材料有限公司 | Reinforcing agent for natural polymer modified paper interlayer spraying and preparation method thereof |
| CN114380927A (en) * | 2022-02-28 | 2022-04-22 | 西南大学 | Modified glucomannan and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892792A (en) * | 2015-05-22 | 2015-09-09 | 苏州大学 | Oxidized form alpha-1,4-oligo-glucuronic acid and preparation method and application thereof |
| CN106835821A (en) * | 2016-12-09 | 2017-06-13 | 苏州艾博迈尔新材料有限公司 | A kind of paper composite fortifier and preparation method thereof |
| CN109082937A (en) * | 2018-09-04 | 2018-12-25 | 南京林业大学 | A kind of paper strength Enhancement Method suitable for polyelectrolyte environment |
| CN110218267A (en) * | 2019-07-04 | 2019-09-10 | 汉邦环宇多糖生物科技（河源）有限公司 | A kind of Preparation method and use of iron-dextrin |
| CN113089368A (en) * | 2021-03-29 | 2021-07-09 | 上海昶法新材料有限公司 | Reinforcing agent for natural polymer modified paper interlayer spraying and preparation method thereof |
| CN114380927A (en) * | 2022-02-28 | 2022-04-22 | 西南大学 | Modified glucomannan and preparation method thereof |
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Application publication date: 20130403 |