CN1282777C - Konjaku high hygroscopicity fibre and its preparation method - Google Patents
Konjaku high hygroscopicity fibre and its preparation method Download PDFInfo
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- CN1282777C CN1282777C CN 200510018698 CN200510018698A CN1282777C CN 1282777 C CN1282777 C CN 1282777C CN 200510018698 CN200510018698 CN 200510018698 CN 200510018698 A CN200510018698 A CN 200510018698A CN 1282777 C CN1282777 C CN 1282777C
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- konjaku
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- high hygroscopicity
- hygroscopicity fibre
- water absorption
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Abstract
The present invention discloses konjaku high water absorption fiber and a preparation method thereof. Refined konjaku powder is milled by a colloidal mill and is decolored and refined to obtain konjaku miropowder of which the intrinsic viscosity is from 450 cm3/g to 650 cm3/g; water is taken as a solvent to prepare spinning dope in which the concentration of the konjaku miropowder is from 3% to 15% and the concentration of a crosslinking agent is from 0.01% to 0.18% according to weight ratio; the spinning dope is filtered and defoamed in vacuum and then is squeezed into silk; the silk beam enters a coagulating bath; then the silk beam stretches when solidified; the stretching multiple is from 1.2 to 2.4; finally the silk beam is washed and dried, and thereby, the konjaku high water absorption fiber of which the dry strength reaches 2.5 cN/tax, the fiber length is bigger than and equal to 25mm, the water absorption capacity is higher than and equal to 85g (water)/g (fiber) and the salt water absorption is higher than and equal to 80 (salt water)/g (fiber) is produced. The present invention has the advantages of wide source of raw material, no environment pollution, good product performance, low production cost, etc. The konjaku high water absorption fiber is an ideal material for manufacturing sanitary accessories for infants, beauty masks, food fresh keeping materials, medical dressings, etc.
Description
Technical field
The invention belongs to the functional fiber technical field, be specifically related to utilize the Glucomannan in the natural plant macromolecule konjaku powder to prepare a kind of high hygroscopicity fibre, the invention still further relates to the method for this high hygroscopicity fibre of preparation.
Background technology
(Konjac.K) You Ming Amorphophalus rivieri is Araeceae (Araceae) Amorphophallus (Amorphophallus Blume) herbaceos perennial to konjaku, at the cultivation history of the existing two thousand years of China.Konjaku glucomannan (Konjac.Glucomannan) content and the excellent characteristic thereof enriched in the konjaku, especially its strong absorptive, can be used to prepare water soluble film material, photosensitive material, medical intraocular lens, chromatograph packing material, sustained release agent and city cleaning agent etc.
The konjaku resource of China is very abundant, and fresh Amorphophallus rivieri is produced millions of tons per year, is the main industrial crops of China poor areas of the western region.In recent years, the konjaku plant production development was very rapid.The development of konjaku plant husbandry relatively, deep processing very lags behind to konjaku, brings into play its good characteristic, and the development of new functional material has great importance.
Before the present invention, patent CN1197676A has announced a kind of health dressing and method for making made from konjaku thereof, wherein relate to the thread of konjaku or gauze shape product, but this method the same with other several similar patents (CN1184180A, CN1187334A, CN1583838A), all be to utilize under the strong basicity heating condition, irreversible gel takes place and forms network structure in konjaku, obtains the cellular material by technology such as freezing, as to thaw again.Konjaku glucomannan after this kind method is handled itself no longer includes the water-absorbing-retaining ability owing to lost acetyl group, only depends on the certain moisture of loose structure absorption.In fact the fibrous konjak of patent CN1064821C indication is meant the food of graininess or fiber sheet, preparation method and aforementioned patent basically identical.Though CN1218658A has kept the water absorbing capacity of konjaku, only adopt the form of original konjaku flour, directly be added on the intermediate layer of sanitary napkin, effect is unsatisfactory.The present invention at first handles konjaku powder by physical method, has reduced inherent viscosity in refining impurity elimination, makes it have bigger solubility in the aqueous solution, and absorption speed is faster.Adopt spinning mode commonly used to make high hygroscopicity fibre thereafter.In the manufacture process; effect by crosslinking agent; flowability, the water-retaining property of slurries, the tensility and the intensity of fiber have been improved; for strengthening the action effect of crosslinking agent, used weakly alkaline solidification liquid, with this understanding simultaneously; konjaku glucomannan can deacetylate; still can keep powerful hydrophilic ability, and under the crosslinking agent effect, not dissolve, different with above-mentioned all patents.
Summary of the invention
The invention reside in the deficiency that overcomes prior art, utilize the Glucomannan in the natural plant macromolecule konjaku powder to prepare a kind of high hygroscopicity fibre, and the manufacturing technique of this high hygroscopicity fibre.Raw material of the present invention is easy to get and non-environmental-pollution, low price.Simultaneously, the present invention also can promote the deep development and the industrialization of konjaku.
The present invention is achieved through the following technical solutions:
A kind of konjaku high hygroscopicity fibre, obtaining inherent viscosity by konjaku powder behind colloid mill grinding and decolorizing and refining is 450-650cm
3The konjaku micropowder of/g is a solvent with water, is made into konjaku micropowder concentration by weight and is 3～15%, crosslinker concentration is the spinning slurry of 0.01-0.18%; Spinning slurry squeezes silk after handling with vacuum defoamation after filtration, and tow enters coagulating bath, stretches while solidifying, and draw ratio is 1.2-2.4, after washing and drying make konjaku high hygroscopicity fibre.
Be equipped with the ethanolic solution of volume ratio 85～95% in the above-mentioned coagulating bath, its pH value is limited in the scope of 8-8.5, and the fiber after stretching is reeled after volume ratio 45～65% acidic ethanols washing of pH 4-5.5.
Above-mentioned crosslinking agent is sodium tetraborate or boric acid.
The present invention also provides the preparation method of above-mentioned konjaku high hygroscopicity fibre, and konjaku powder is obtained inherent viscosity behind colloid mill grinding and decolorizing and refining be 450-650cm
3The konjaku micropowder of/g is a solvent with water, is made into konjaku micropowder concentration by weight and is 3～15%, crosslinker concentration is the spinning slurry of 0.01-0.18%; Spinning slurry squeezes silk after handling with vacuum defoamation after filtration, and tow enters coagulating bath, stretches while solidifying, and draw ratio is 1.2-2.4, after washing and drying make konjaku high hygroscopicity fibre.
Be equipped with the ethanolic solution of volume ratio 85～95% in the above-mentioned coagulating bath, its pH value is limited in the scope of 8-8.5, and the fiber after stretching is reeled after volume ratio 45～65% acidic ethanols washing of pH 4-5.5.
Above-mentioned crosslinking agent is sodium tetraborate or boric acid.
The present invention has following positive effect:
Konjaku high hygroscopicity fibre is to be the natural material of main component with natural polymer konjaku Konjac Glucomannan, because the Rhizoma amorphophalli fiber product has excellent biological compatibility, degradability, thereby can be used widely in medicine, environmental protection, daily-use sanitary product.Compare with the shitosan series products, these series of products raw material obtains to be easy to get and non-environmental-pollution, low price, but one-step shaping is easy to industrialization.Preparing the high water absorption konjac product with the past compares, this patent is directly made is Rhizoma amorphophalli fiber product but not gel particle, do not add compounds such as any acrylic acid, acrylate, propylene cyanogen, maleic anhydride on the manufacture craft and carry out graft copolymerization or cross-linking reaction, do not have any environmental pollution and murder by poisoning.Thereby can be used for the extensive use such as fresh-keeping, beauty mask, disinfected paper napkin, the deodorizing of spices slowly-releasing, medicament slow release, Wound bandage of meat and aquatic products.Thereby the present invention can provide a kind of multipurpose, high-fallly separates, high suction, non-stimulated, biocompatible functional fiber material, can develop series of products on this basis, has fabulous market prospects.Simultaneously, also provide a new approach for the high-value-use of konjaku resource.
The specific embodiment
Embodiment 1:
Konjaku powder after 8 minutes, dries through the colloid mill circular grinding with 40% the ethanolic solution protection of 5 times of volumes, after 40% the ethanolic solution washing with pH4, and vacuumize, inherent viscosity is 485cm
3/ g is a solvent with water, is made into konjaku micropowder concentration by weight and is 12.0%, sodium tetraborate concentration is 0.03% spinning slurry; Spinning slurry filters through 180 mesh sieves, and after vacuum defoamation is handled, being delivered to spinning with measuring pump emits and extrudes, tow enters coagulating bath, be equipped with 85% the ethanolic solution of pH 8.0 in the coagulating bath, stretch while solidifying, draw ratio is controlled at 1.8, after reel in 45% acidic ethanol of pH 5 washing back, drying makes konjaku high hygroscopicity fibre.Dry strength 2.6cN/dtex, fibre length 28mm, water absorbing capacity 90g (water)/g (fiber) inhales salt solution 85 (salt solution)/g (fiber).
Embodiment 2:
Konjaku powder after 5 minutes, dries through the colloid mill circular grinding with 40% the ethanolic solution protection of 5 times of volumes, after 40% the ethanolic solution washing with pH4, and vacuumize, inherent viscosity is 610cm
3/ g is a solvent with water, is made into konjaku micropowder concentration by weight and is 3.0%, boric acid concentration is 0.08% spinning slurry; Spinning slurry filters through 180 mesh sieves, and after vacuum defoamation is handled, being delivered to spinning with measuring pump emits and extrudes, tow enters coagulating bath, be equipped with 95% the ethanolic solution of pH 8.5 in the coagulating bath, stretch while solidifying, draw ratio is controlled at 2.0, after reel in 65% acidic ethanol of pH 4 washing back, drying makes konjaku high hygroscopicity fibre.Dry strength 2.8cN/dtex, fibre length 35mm, water absorbing capacity 96g (water)/g (fiber) inhales salt solution 89 (salt solution)/g (fiber).
Claims (4)
1. konjaku high hygroscopicity fibre is characterized in that: by konjaku powder through colloid mill grind and decolorizing and refining after to obtain inherent viscosity be 450-650cm
3The konjaku micropowder of/g is a solvent with water, is made into konjaku micropowder concentration by weight and is 3～15%, crosslinker concentration is the spinning slurry of 0.01-0.18%; Spinning slurry squeezes silk after handling with vacuum defoamation after filtration, and tow enters coagulating bath, stretches while solidifying, and draw ratio is 1.2-2.4, after washing and drying make konjaku high hygroscopicity fibre; Described crosslinking agent is sodium tetraborate or boric acid.
2. konjaku high hygroscopicity fibre according to claim 1, it is characterized in that: the ethanolic solution that is equipped with volume ratio 85～95% in the coagulating bath, its pH value is limited in the scope of 8-8.5, and the fiber after stretching is reeled after volume ratio 45～65% acidic ethanols washing of pH 4-5.5.
3. the preparation method of the described konjaku high hygroscopicity fibre of claim 1 is characterized in that: with konjaku powder through colloid mill grind and decolorizing and refining after to obtain inherent viscosity be 450-650cm
3The konjaku micropowder of/g is a solvent with water, is made into konjaku micropowder concentration by weight and is 3～15%, crosslinker concentration is the spinning slurry of 0.01-0.18%; Spinning slurry squeezes silk after handling with vacuum defoamation after filtration, and tow enters coagulating bath, stretches while solidifying, and draw ratio is 1.2-2.4, after washing and drying make konjaku high hygroscopicity fibre; Described crosslinking agent is sodium tetraborate or boric acid.
4. the preparation method of konjaku high hygroscopicity fibre according to claim 3, it is characterized in that: the ethanolic solution that is equipped with volume ratio 85～95% in the coagulating bath, its pH value is limited in the scope of 8-8.5, and the fiber after stretching is reeled after volume ratio 45～65% acidic ethanols washing of pH 4-5.5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510018698 CN1282777C (en) | 2005-05-13 | 2005-05-13 | Konjaku high hygroscopicity fibre and its preparation method |
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| CN 200510018698 CN1282777C (en) | 2005-05-13 | 2005-05-13 | Konjaku high hygroscopicity fibre and its preparation method |
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| CN1693553A CN1693553A (en) | 2005-11-09 |
| CN1282777C true CN1282777C (en) | 2006-11-01 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7670678B2 (en) * | 2006-12-20 | 2010-03-02 | The Procter & Gamble Company | Fibers comprising hemicellulose and processes for making same |
| CN102220697B (en) * | 2011-03-31 | 2012-08-15 | 上海信诺展创纱业有限公司 | Konjak slurry and preparation method thereof and konjak yarn and processing machine and manufacturing method thereof |
| CN102373514A (en) * | 2011-10-13 | 2012-03-14 | 西南科技大学 | Glucomannan fiber and preparation method thereof |
| JP2016507659A (en) * | 2012-12-04 | 2016-03-10 | バイエル・クロップサイエンス・アクチェンゲゼルシャフト | Improved method for producing pesticide-containing fabrics |
| CN103303020B (en) * | 2013-05-08 | 2014-11-19 | 福建农林大学 | Konjak gulcomannan printing thin film and preparation method thereof |
| CN103407205B (en) * | 2013-07-16 | 2015-06-03 | 福建农林大学 | Konjac glucomannan fiber wet tissue and method for preparing same |
| CN103418020B (en) * | 2013-08-31 | 2015-01-07 | 西南大学 | Devilstongue gulcomannan hemostatic sponge and preparation method thereof |
| CN104562293B (en) * | 2013-10-22 | 2017-05-17 | 成立萍 | Preparation method for water-locking chitosan fibers |
| CN106676675B (en) * | 2016-12-15 | 2019-03-05 | 珠海水丝新材料有限公司 | A kind of production method of super-strong moisture absorbing high-performance fiber |
| CN112391837B (en) * | 2020-11-30 | 2022-11-15 | 湖北一致魔芋生物科技股份有限公司 | Konjak mask base cloth preparation method and konjak mask |
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