JP2002105859A - Method for filling polymer in follow fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for filling a polymer in hollow fibers by which the polymer containing a function imparting agent such as a tree extract is efficiently filled in gaps of the hollow fibers, functions are sufficiently exhibited while maintaining a feeling of the hollow fibers, and the durability thereof is remarkably improved. SOLUTION: A monomer solution is filled through communication holes in the hollow parts of the hollow fibers scattered with the communicating holes from the fiber surfaces to the hollow parts on the fiber surfaces in a steam atmosphere at 95-105 deg.C temperature under atmospheric pressure while carrying out heat treatment. A polymerization initiator is then applied to the hollow fibers and the resultant hollow fibers are allowed to stand at normal temperature. A polymerization inhibitor is further applied and only the monomer present in the hollow parts is then selectively polymerized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for efficiently filling a hollow portion of a hollow fiber with a polymer.
More specifically, the present invention relates to a method for efficiently filling a hollow part of a hollow fiber with a functionalizer such as a hygroscopic property or a polymer containing a functionalizer containing a tree-extracting component.

[0002]

2. Description of the Related Art Heretofore, there have been several proposals for a hollow fiber having a through hole from the fiber surface to a hollow portion on the surface of the fiber and a functional material attached to the hollow portion.

For example, Japanese Patent Application Laid-Open No. Hei 5-33978,
JP-A-6-17372 and JP-A-6-17373
The publication discloses that a natural protein is impregnated into hollow holes of a hollow synthetic fiber having a communication hole from the fiber surface to a hollow portion on the fiber surface, and is crosslinked and insolubilized to improve the durability of moisture absorption. I have.

[0004] However, natural protein solutions generally have a high viscosity, and the aqueous solution sometimes gels.
It is extremely difficult to impregnate the hollow portion through the communication hole. On the other hand, when natural protein is impregnated at a low concentration, there is a problem that the amount of natural protein contained in the hollow portion decreases, and the level of the function to be expressed becomes insufficient.

Japanese Patent Application Laid-Open No. Hei 6-173167 discloses a hollow fiber in which a core-sheath type composite fiber is reduced in alkali, a core part is dissolved and removed, and a split groove is formed in a longitudinal direction of the fiber to reach a hollow part. There is disclosed a moisture-absorbent fiber in which a moisture absorbent formed of a monomer having a cloud point equal to or lower than the glass transition point of the fiber-forming polymer is attached to a hollow portion of the hollow fiber.

However, in the above-mentioned method, it is difficult to completely dissolve and remove the core portion, so that the adhesion of the monomer becomes insufficient, and even if it is dissolved and removed, even if the width and length are excessively large, the splitting is excessively large. Since the grooves are formed, there is a problem that the hygroscopic agent falls off from the split grooves during washing or the like, resulting in poor durability.

[0007] In order to solve such a problem, the present inventors have previously described a water-soluble monomer containing a polymerization initiator in a hollow portion of a hollow fiber in which communication holes from the fiber surface to the hollow portion are scattered on the fiber surface. After suction filling through the communication hole, and then polymerizing the water-soluble monomer (JP-A-8-18).
No. 8967).

However, in this method, when the water-soluble monomer is suction-filled into the hollow portion through the communication hole, the monomer adheres to the surface of the fiber and forms a polymer on the surface. There was a problem that the mixture hardened.

In addition, the technique of suction filling as described above is not applicable when a substance which easily evaporates is contained in the monomer solution filled in the hollow interior. Equipment is required, and in order to increase the production volume, the equipment itself must be enlarged or a large number of such equipment must be introduced, which is not suitable for mass production. Had.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to efficiently fill a hollow part of a hollow fiber with a functionalizer such as a hygroscopic property or a polymer containing a functionalizer including a tree extract component. In addition, it is an object of the present invention to provide a method for filling a hollow fiber with a polymer, in which the function is sufficiently exhibited while maintaining the original feeling of the hollow fiber, and the durability of which is significantly improved.

[0011]

Means for Solving the Problems The present inventors have conducted intensive studies in order to achieve the above object, and as a result, after the filling of the monomer solution is completed, a polymerization inhibitor is added to the hollow fibers to thereby form a hollow interior. It has been found that only the monomer present in the polymer can be selectively polymerized, and a desired hollow fiber can be obtained, and the present invention has been achieved.

That is, according to the present invention, the communication hole from the fiber surface to the hollow portion is scattered on the fiber surface.
After filling while heating in a 5 ° C normal pressure steam atmosphere,
A polymer to a hollow fiber, wherein a polymerization initiator is further provided after a polymerization initiator is provided to the hollow fiber and left at room temperature, and thereafter only a monomer present in the hollow portion is selectively polymerized. By filling the monomer solution containing the polymerization initiator under normal pressure at a temperature of 5 ° C. to 40 ° C. in the hollow portion of the hollow fiber in which communication holes from the fiber surface to the hollow portion are scattered. After filling through the communication hole,
A method for filling a polymer into a hollow fiber is provided, which comprises adding a polymerization inhibitor to the hollow fiber and then selectively polymerizing only a monomer present in the hollow portion.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. The hollow fiber of the present invention refers to a hollow fiber composed of chemical fibers such as rayon and acetate, and synthetic fibers such as polyester and nylon, and a polyester hollow fiber is particularly preferred.

The polyester as used herein means terephthalic acid as a main dicarboxylic acid component and at least one kind of glycol, preferably at least one kind selected from ethylene glycol, trimethylene glycol, tetramethylene glycol, hexamethylene glycol and the like. And polyesters containing alkylene glycol as a main glycol component. More preferably, a polyester containing ethylene glycol as a main glycol component is exemplified.

A stabilizer may be added to the polyester if necessary.
Antioxidants, flame retardants, antistatic agents, optical brighteners, catalysts,
A coloring inhibitor, a heat-resistant agent, a coloring agent, inorganic particles and the like may be contained.

The fineness, the number of filaments, the cross-sectional shape, the fiber properties, the fine structure and the polymer properties (such as molecular weight) of the fibers are not limited at all. Further, the fibers referred to in the present invention include various fiber aggregate forms such as yarns, cords, nonwoven fabrics and woven / knitted fabrics.

The above hollow fiber can be produced by a conventionally known method, and for example, a method described in Japanese Utility Model Publication No. 2-43879 can be arbitrarily adopted.

As a method of forming a connection hole to a hollow portion on the fiber surface, for example, in the case of a polyester fiber, a polyester obtained by copolymerizing an organic sulfonic acid compound is mixed and melt-spun to form a hollow fiber. By reducing the amount of alkali, a communication hole can be formed (Japanese Unexamined Patent Publication No.
-20319 publication).

Further, if a high hollow fiber having a hollow ratio of 20% or more is subjected to an alkali treatment, even if an organic sulfonic acid compound is not used, a low orientation portion and / or a deformation strain concentration portion along the longitudinal direction of the fiber can be obtained. A communication hole can be formed as a removal mark.

Further, a high hollow fiber having a hollow ratio of not less than 20% is added to a buffer solution at a temperature not lower than the lower of the thermal decomposition temperature or the thermal softening temperature and the glass transition temperature of the fiber. While maintaining the pH within the range of 9.5 to 11.5, a stress within the elastic limit of the fiber is repeatedly applied in a direction intersecting with the longitudinal direction of the fiber, so that the longitudinal direction of the fiber is A communication hole from the fiber surface to the hollow portion can be formed along the line (JP-A-11-350341).

The communication hole preferably has a width of 0.2 to 10 μm and a length of 5 to 40 μm. If the width and length of the communication hole are out of the above ranges, the monomer solution may be insufficiently filled, or the water-insoluble polymer may easily fall off.

Next, the monomer solution used in the present invention means a solution whose state can be irreversibly changed from a low molecular weight compound to a high molecular weight compound by using a polymerization initiator. Specifically, a liquid containing a monomer capable of performing a polymerization and a cross-linking reaction, such as an aqueous solution containing a vinyl monomer capable of performing a polymerization and a cross-linking reaction, and the like can be given.

The vinyl monomer may be either water-soluble or water-insoluble, but it is important that the stability of the working fluid at the processing site is high.
Water-soluble ones are preferably used from the viewpoints of working environment, processing stability and the like. As such a water-soluble vinyl-based monomer, a water-soluble vinyl-based monomer having a vinyl group in a molecule is optionally used.

Examples of the water-soluble vinyl monomer having a vinyl group in the molecule include a water-soluble vinyl monomer having at least one group selected from a carboxylic acid group, a carboxylic acid group, a sulfonic acid group and a sulfonic acid group. Preferably used, specific examples include acrylic acid, methacrylic acid, crotonic acid, cinnamic acid, maleic acid, fumaric acid,
Examples thereof include citraconic acid, mesaconic acid, itaconic acid, methallyl sulfonic acid, 2-acrylamido-2-methylpropane sulfonic acid and their Na salts, Li salts, and K salts. These can be used alone or as a mixture of two or more.

Further, in order to further prevent the outflow from the hollow portion, it is preferable to add a water-soluble vinyl monomer represented by the following general formula (1) in order to further promote the crosslinking reaction.

[0026]

Embedded image

In the above formula (1), Z is a residue of an organic compound having an active hydrogen of 1 to 6 and a molecular weight of 300 or less, and is methanol, propanol, butanol, phenol, ethylene glycol, bisphenol A, propylene glycol, butylene. Residues of hydroxyl group-containing compounds such as glycol, butanediol, neopentyl glycol, glycerin, trimethylolpropane, triethanolamine, diglycerin, pentaerythritol, sorbitol, and primary and secondary such as ethylenediamine, hexamethylenediamine, diethylenetriamine Examples thereof include residues of amines. Among them, a hydroxyl group-containing compound is preferable. R ¹ is mainly composed of ethylene groups may be the polyoxyethylene polyether (1) it is a part within a water-soluble be other alkylene groups such as propylene or butylene group, R ² is An acryloyl group or a methacryloyl group, a part of which may be a hydrogen atom or a lower alkyl group such as a methyl group, an ethyl group, a propyl group or a butyl group. k is an integer of 1 to 6 corresponding to the number of active hydrogen atoms of the organic compound serving as a source of Z. l is a positive integer and may be the same or different between or within molecules. If the value of l is too large, the viscosity of the aqueous solution becomes high, and it may become difficult to penetrate into the hollow part. Therefore, the k × l value is preferably 80 or less.

Preferred examples of the water-soluble polyoxyethylene polyether include polyethylene glycol (average molecular weight: 400) di (meth) acrylate, polyethylene glycol (average molecular weight: 600) di (meth) acrylate, polyethylene Glycol (average molecular weight: 1000) di (meth) acrylate, methoxypolyethylene glycol (average molecular weight: 1320) mono (meth) acrylate, bisphenol A ethylene oxide 30 mol adduct di (meth) acrylate, glycerin ethylene oxide adduct (Meth) acrylate, tri (meth) acrylate of glycerin ethylene oxide adduct, di (meth) acrylate of trimethylolpropane ethylene oxide adduct, trimethylolpropane Birds emission oxide adduct (meth)
Acrylate, di (meth) acrylate of sorbitol ethylene oxide adduct, di (meth) acrylate of sorbitol ethylene oxide adduct, tri (meth) acrylate of sorbitol ethylene oxide adduct, tetra (meth) acrylate of sorbitol ethylene oxide adduct, Examples thereof include penta (meth) acrylate of sorbitol ethylene oxide adduct and hexa (meth) acrylate of sorbitol ethylene oxide adduct. Further, such water-soluble polyoxyethylene-based polyethers may be used alone or in combination of two or more.
Among these water-soluble vinyl monomers, a mixture of acrylic acid, acrylate, and polyethylene glycol di (meth) acrylate is preferably exemplified in terms of hygroscopicity, washing durability and safety.

The amount of the vinyl monomer is preferably in the range of 1 to 50% by weight based on the weight of the hollow fiber, and more preferably 5 to 50% by weight.
Particularly preferred is a range of -30% by weight. If the amount is less than 1% by weight, the durability of the washing after filling and immobilizing the function-imparting agent may be insufficient, and if it exceeds 50% by weight, the feeling as a fibrous structure becomes hard. May occur, which is not preferable.

The monomer solution capable of undergoing polymerization and crosslinking reaction used in the present invention preferably contains a function-imparting agent. Examples of the functionalizing agent include medicinal and physiological properties such as medicinal properties such as aloe, cucumbers, and garlic, substances having a plant flavor (plant extracts, plant proteins), bacterial cultures such as collagen, keratin, and sericin, and wound treatment. Function-imparting substances (animal proteins), electrical function-imparting substances (ceramic fine particles) for conductors such as titanium oxide, silica, alumina, zeolite, etc., for magnetic substances, octacarboiron phthalocyanine, dimethyl phthalate, organic silicon Antibacterial and deodorant substances such as ammonium and organic nitrogen compounds, various flavors (flavors and fragrances), water absorption such as polyethylene glycol,
A water-repellent or oil-repellent substance such as a substance having a hygroscopic property and a water retention property, a compound having a perfluoroalkyl group, and the like are appropriately used, and further include a tree extract component.

As the tree-extracting component, essential oils, especially natural essential oils, are preferred, and specific examples thereof include hinoki oil, cedar oil, peppermint oil, eucalyptus oil, hiba oil, camphor oil and the like. These essential oils are usually found in plant foliage,
It is obtained by steam distillation from rhizomes, bark, fruits, buds, resins, etc., and contains terpenoids as a main component.

The amount of the tree extract component is preferably in the range of 1 to 40% by weight based on the weight of the hollow fiber, and more preferably 1 to 40% by weight.
Particularly preferred is a range of -30% by weight. This amount is 1% by weight
If the amount is less than the above, the effect of the tree extract component may not be sufficiently exhibited, and if it exceeds 40% by weight, the effect of the tree extract component will no longer show a remarkable improvement.

Examples of the polymerization initiator used in the present invention include peroxides such as potassium persulfate, ammonium persulfate, hydrogen peroxide and benzoyl peroxide, and cerium ammonium salts such as ceric ammonium sulfate and ceric ammonium nitrate. And α, α′-azobisisobutyronitrile, and the like. Of these, potassium persulfate and ammonium persulfate are particularly preferably used.

Further, as a method of filling the hollow portion with the monomer solution, the following method can be specifically exemplified. A method in which a hollow fiber is coated with a monomer solution comprising a monomer and a polymerization initiator, and then left at room temperature to fill the hollow portion with the monomer solution. After attaching the monomer solution to the hollow fiber, the temperature is 95 ° C.
A method in which the monomer solution is filled by performing a heat treatment in a normal pressure steam atmosphere at a temperature of up to 105 ° C.

When the above method is adopted, a polymerization initiator is added after the monomer solution is filled. Thereafter, it is preferable to leave the polymerization initiator at a temperature lower than the polymerization occurrence temperature of the polymerization initiator, usually at room temperature for a certain period of time so that the polymerization initiator can evenly reach the inside of the hollow fiber.

It is possible to fill the hollow portion with the monomer solution by any of the above methods. However, in terms of industrial implementation, the method is as follows. This is particularly preferable in that it can be filled in a short time of one minute, and thereafter a polymerization initiator can be applied by a spraying method, a coating method, a padding method or the like, and continuous production is easy.

In the present invention, after the monomer solution is filled in the hollow portion by the above method, it is necessary to apply a polymerization inhibitor to the fiber surface, and then to polymerize only the monomer present in the hollow portion by heating or the like. It is.

The polymerization inhibitor used in the present invention is a polymerization inhibitor capable of generating a stable radical, such as diphenylpicrylhydrazyl, galvinoxyl, and ferdazyl, and oxygen, which generates a stable radical by an addition reaction with a growing radical. Examples include sulfur, benzoquinone derivatives, nitro compounds, and diphenylpicrylhydrazine, diphenylamine, hydroquinone, hydroquinone monomethyl ether, and tertiary butyl catechol that generate stable radicals by a chain transfer reaction with a growing radical. Above all, inexpensive hydroquinone and hydroquinone monomethyl ether are preferably used.

Preferred examples of the method of applying the polymerization inhibitor to the fiber surface include a method of directly applying the polymerization inhibitor or a solution thereof to the fiber by a padding method, a coating method, a transfer roller, a spray or the like.

As described above, the polymerization inhibitor is applied to the fiber surface after the monomer solution is filled in the hollow portion, and captures the reactive radical generated by heating or the like.
The polymerization of the monomer remaining on the fiber surface is suppressed, and as a result, only the monomer in the hollow portion is selectively polymerized.

As for the method of polymerization, the polymerization inhibitor is sufficiently mixed with the monomer solution on the fiber surface, and then heated to a temperature higher than the polymerization initiation temperature of the polymerization initiator, whereby the polymerization and crosslinking reactions occur. At this time, the entire fiber is immersed in a liquid capable of dissolving or dispersing the monomer solution and heated, the monomer solution remaining on the fiber surface,
It is preferably used because unreacted monomers and insufficiently reacted oligomers and the like inside the hollow can be quickly washed away from the fiber surface.

[0042]

In the present invention, since the polymer is filled only in the hollow portion of the hollow fiber in which communication holes to the hollow portion are scattered on the fiber surface, the feeling inherent in the hollow fiber is not impaired. The function of the polymer is exhibited, and the durability is remarkably improved.

That is, in the present invention, since the polymerization inhibitor applied to the surface of the hollow fiber suppresses the polymerization of the monomer existing on the surface of the fiber, only the monomer in the hollow portion forms a polymer.

On the other hand, when the polymerization inhibitor is not applied to the surface of the hollow fiber, a polymer is formed on the surface of the fiber, which not only impairs the feeling of the hollow fiber but also deteriorates the texture of the polymer. May not be fully expressed.

[0045]

The present invention will be described below with reference to examples.
The present invention is not limited to these examples.

(1) Preparation of Work Cloth Polyethylene terephthalate having an intrinsic viscosity of 0.61 was melted, and a hollow fiber undrawn yarn having a hollow ratio of 40% was obtained using a hollow spinneret. Next, the undrawn yarn was drawn to obtain a round hollow multifilament yarn having 56 dtex and 20 filaments (amount of titanium oxide: 0.3% by weight).

The above-mentioned multifilament yarn is prepared according to a conventional method.
Knitted in a circular knitted fabric. Using a high-pressure jet dyeing machine, the obtained knitted fabric was placed in a buffer solution containing 0.5 g / l of sodium carbonate at a concentration of 1 g / l.
The treatment was performed at 20 ° C. for 30 minutes.

When the multifilament yarn was taken out from the obtained fabric and its surface was observed with an electron microscope, microgrooves having a width of 0.2 to 2.0 μm and a length of 5 to 40 μm were formed on each filament in the fiber axis direction. At least one or more were observed.

Twill fabrics were prepared using the same multifilament yarns according to a conventional method, and scouring and presetting were performed. Further, using a high-pressure jet dyeing machine, the obtained fabric,
130 ° C. in a buffer solution containing 0.5 g / l sodium carbonate
For 40 minutes.

When the multifilament yarn was taken out from the obtained fabric and its surface was observed with an electron microscope, microgrooves having a width of 0.2 to 1.0 μm and a length of 5 to 40 μm were formed on each filament in the fiber axis direction. At least one or more were observed.

(2) Preparation of monomer solution capable of polymerization and cross-linking reaction A monomer solution was prepared according to the recipe shown in Table 1 (unit: parts by weight).

[0052]

[Table 1]

(3) Method of Measuring Physical Properties (A) Filling Fixing Rate The fixing rate (unit:%) of the filled polymer was measured by measuring the fabric weight before and after processing as V ₀ and V ₁ , respectively. The fixation rate was calculated as an increase rate with respect to the fiber weight by the following equation.

[0054]

(Equation 1)

(B) Washing durability According to JIS L-1018-77 6.36 H method,
The washing was repeated 20 times. (C) Hand The finished fabric was directly touched with a hand and evaluated in three stages: soft, intermediate and hard. (D) Quantitative analysis of hinoki essential oil content Hinoki cypress essential oil was thermally desorbed from the sample under the conditions of 240 ° C. × 6 minutes and cold trapped at −50 ° C.
-Quantitative analysis was performed using MS (manufactured by Yokogawa Analytical Systems Co., Ltd.).

[Example 1] The circular knitted fabric (width 120 cm, length 20 m) prepared in the above (1) was immersed in the monomer solution A prepared in the above (2). Subsequently, the mixture was squeezed so that the pressure became 100%, and subsequently, a heat treatment was performed for 5 minutes at a temperature of 100 ° C. using a normal-pressure steam steamer. Next, a 5% ammonium persulfate aqueous solution is applied to the knitted fabric by a spray method so as to be 25 g / m ² ,
It was left at 25 ° C. for 15 minutes. Next, a solution consisting of 1 part by weight of hydroquinone and 100 parts by weight of water was applied to the cloth by spraying at 50 g / m ² , and further immersed in hot water at 100 ° C. for 3 minutes with stirring. After the monomer was polymerized, a drying heat setting was performed. Table 2 shows the measurement results of the physical properties of the obtained fabric. As a result of observing the obtained fabric surface with an electron microscope, no polymer was found on the fiber surface.

Example 2 Instead of the circular knitted fabric used in Example 1, the twill woven fabric prepared in (1) was used, and the monomer solution B prepared in (2) was used to attach a monomer solution. Squeezing so that the amount is 100% with respect to the fabric,
Then, seal with a polyethylene bag,
For 3 days. Then, a solution consisting of 3 parts by weight of hydroquinone monomethyl ether and 100 parts by weight of water was applied to the surface of the cloth using a transfer roller at a rate of 20 g / m ² , and further heated at 100 ° C. for 20 minutes with a normal pressure steamer to obtain a monomer. After the polymerization, was washed with water and dried and heat set. Table 2 shows the measurement results of the physical properties of the obtained fabric. As a result of observing the obtained fabric surface with an electron microscope, no polymer was found on the fiber surface.

Example 3 Example 3 was carried out in the same manner as in Example 1 except that processing was performed using monomer solution C instead of using monomer solution A. Table 2 shows the measurement results of the physical properties of the obtained fabric. As a result of observing the obtained fabric surface with an electron microscope, no polymer was found on the fiber surface.

Example 4 Example 4 was carried out in the same manner as in Example 1 except that processing was performed using monomer solution D instead of using monomer solution A. Table 2 shows the measurement results of the physical properties of the obtained fabric. As a result of observing the obtained fabric surface with an electron microscope, no polymer was found on the fiber surface.

Comparative Example 1 The procedure of Example 1 was repeated except that the treatment with the aqueous hydroquinone solution was omitted. Table 2 shows the measurement results of the physical properties of the obtained fabric. As a result of observing the obtained fabric surface with an electron microscope, the fiber surface,
In particular, a large amount of polymer was found at the knot portion of the stitch.

[0061]

[Table 2]

[0062]

The fabric of the present invention has a
The polymer did not adhere to the surface of the fabric, the feeling was soft, and the packing unevenness was small. Further, this fabric was excellent in washing durability, and there was almost no change in the filling fixation ratio even after washing 20 times.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) D06M 15/17 D06M 15/53 15/53 15/72 15/00 5/02 B 5/00 (72) Inventor Toyoshi Suzuki 3-4-1 Amihara, Ibaraki-shi, Osaka F-term in Osaka Research Center, Teijin Limited 4J011 CA03 CC01 NA23 NB06 NC07 PA07 PA16 PA30 PB25 PB27 PB34 PB35 PB40 PC03 4L031 AA18 AB01 AB33 BA11 BA14 BA17 CA01 DA12 DA13 4L033 AA07 AB01 AB06 AC15 BA13 CA09 CA18 CA48 CA70 DA02 DA07

Claims (6)

[Claims] 1. A monomer solution is heated in a normal pressure steam atmosphere at a temperature of 95 ° C. to 105 ° C. in a hollow portion of a hollow fiber in which a communication hole from a fiber surface to a hollow portion is scattered on the fiber surface through the communication hole. After filling while processing, a polymerization initiator was applied to the hollow fiber and left at room temperature to further apply a polymerization inhibitor,
A method of filling a polymer into hollow fibers, characterized by selectively polymerizing only the monomer present in the hollow portion. 2. A monomer solution containing a polymerization initiator is allowed to stand in a hollow portion of a hollow fiber in which communication holes from the fiber surface to the hollow portion are scattered on the fiber surface under normal pressure at a temperature of 5 ° C. to 40 ° C. A method for filling a polymer into a hollow fiber, comprising: adding a polymerization inhibitor to the hollow fiber after filling through a communication hole; and then selectively polymerizing only a monomer present in the hollow portion. 3. The method according to claim 1, wherein the polymerization inhibitor is a polymerization inhibitor capable of generating stable radicals. 4. The method according to claim 1, wherein the polymerization inhibitor is hydroquinone or hydroquinone monomethyl ether.
A method for filling a hollow fiber with a polymer according to the above. 5. The method for filling a hollow fiber with a polymer according to claim 1, wherein the monomer solution is a solution containing a function-imparting agent. 6. The method for filling a hollow fiber with a polymer according to claim 5, wherein the functionality-imparting agent contains a tree extract component.