KR20110052884A - Preparation of artificial fishing bait using hydrogel - Google Patents

Abstract

PURPOSE: A method for manufacturing an artificial bait using hydrogel is provided to enable effective fishing and to remarkably reduce water pollution. CONSTITUTION: A method for manufacturing an artificial bait using hydrogel comprises: a step of dissolving biocompatible polymers in distilled water; a step of mixing with polyvalent alcohol to obtain a solution; a step of adding smell diffusing additive to the solution; a step of irradiating radiation to the solution to form the artificial bait; and a step of performing thermal treatment of the artificial bait. The biocompatible polymer is selected from the group consisting of polyvirny alcohol, polyvinyl pyrrolidone, polyacrylic acid, polyethylene oxide, carageenan, sodium carboxymethyl cellulose, gelatin, agar, alginate, and chitosan.

Description

Manufacturing method of artificial bait using hydrogel {Preparation of artificial fishing bait using hydrogel}

The present invention relates to a method for producing artificial bait using a hydrogel.

Lure fishing means fishing using artificial lures instead of animal lures such as earthworms, worms, shrimps, maggots and small bait fish or vegetable lures such as rice cakes. By properly moving the reel to move the artificial bait as if it is a living creature, it is a fishing method to make the carnivorous fish to be mistaken for a live food by the artificial bait suspended on the fishing line.

Generally, fishing lures are used for earthworms, shrimps, maggots and rice cakes. Especially, earthworms and maggots are effective as meat-like baits, but because of their aversion, their handling is very uncomfortable and they are easily deteriorated. There is a problem that there are many difficulties. In addition, when using a live maggot as a bait for fishing, there is a problem that the maggot becomes a fly in summer or warm weather, and maggots grow too much after 3-4 days, so they cannot be used as bait and fishing maggots are difficult to store. Difficult to manage, actually unsanitary, there is a problem that can not be used because there is a sense of rejection.

In addition, in order to prevent environmental pollution caused by fishing baits, the use of rice cakes or raw baits is prohibited, and in Korea, the use of rice cakes is regulated by regions. In developed countries, fishing using artificial lures has become popular as a substitute for live bait, and in Japan, there is a high recognition of artificial lures.

Artificial lures, commonly called lures, are produced in Japan, the United States, and Taiwan, with hundreds of varieties. In order to induce the illusion and interest of the fish, the artificial bait is designed to give shape and movement, light and color, and sound. Artificial baits can be classified into spoons, imitations, plugs, spinners, jigs, and worms, depending on their shape. It is widely used.

The artificial baits used in the prior art are living creatures such as earthworms, slugs, maggots, and small fishes, and models or other forms similar to these, such as PVC gel, urethane gel, or thermoplastic block copolymer (Block copolymer). The artificial bait using the composition which mixed additives, such as a plasticizer, has become mainstream here. Plasticizers used in polyvinyl chloride (PVC) processing include phthalates, adipates, trimellitates, and the like. Among them, the phthalate di 2-ethylhexyl phthalate is most preferred. It is widely used for general purposes.

However, the artificial bait using PVC as a binder resin has a considerable amount of phthalate-based plasticizer, and since these phthalate-based plasticizers are chemical substances classified as environmental hormones, there is a problem that they may act as a large source of pollution when disposed of after use. .

On the other hand, the hydrogel refers to a form in which the water-soluble polymer dissolved in water is physically or chemically cross-linked, and as long as water is present, it is flexible and swells when placed in water. The hydrogel is made of a hydrophilic polymer and is environmentally friendly because no phthalate plasticizer is classified as an environmental hormone. However, in general, hydrogels are prepared by dissolving a water-soluble polymer in water, and thus have low strength and excessive swelling in water, and are not suitable as artificial baits.

Thus, the inventors of the present invention while studying to prepare artificial bait using a hydrogel, polyvinyl alcohol was dissolved in distilled water, polyethylene glycol was added, and then irradiated and heat-treated to confirm that it has suitable physical properties as artificial bait This invention has been completed.

An object of the present invention to improve the strength of the hydrogel to provide a method for producing an artificial bait.

Another object of the present invention to provide an artificial bait produced by the above production method.

The present invention to achieve the above object

Dissolving the biocompatible polymer in distilled water and then mixing the polyalcohol to prepare an aqueous solution (step 1);

Mixing the odor divergence additive in the aqueous solution prepared in step 1 (step 2);

Irradiating the mixed solution prepared in step 2 to form artificial bait of hydrogel (step 3); And

It provides a method of manufacturing an artificial bait using a hydrogel comprising a step (step 4) of the heat treatment.

In addition, the present invention provides an artificial bait manufactured by the above production method.

The artificial bait prepared according to the present invention eliminates aversion to bait and at the same time facilitates the use of the artificial bait, the strength is improved compared to the conventional hydrogel, so that the hydrogel is not released from the water, swelling can lure fish Odor is released and flexibility is possible to have a living shape, so that fish can easily access the artificial bait not only effective fishing, but also very hygienic and water pollution can be significantly reduced.

Hereinafter, the present invention will be described in detail.

The present invention

Dissolving the biocompatible polymer in distilled water and then mixing the polyalcohol to prepare an aqueous solution (step 1);

Mixing the odor divergence additive in the aqueous solution prepared in step 1 (step 2);

Irradiating the mixed solution prepared in step 2 to form artificial bait of hydrogel (step 3); And

It provides a method of manufacturing an artificial bait using a hydrogel comprising a step (step 4) of the heat treatment.

First, step 1 is a step of dissolving the biocompatible polymer in distilled water, and then mixed with polyhydric alcohol to prepare an aqueous solution.

In the production method according to the present invention, the biocompatible polymer should have a three-dimensional network structure, and by including a hydrophilic functional group is required not only to absorb water, but also insoluble in water. Therefore, the biocompatible polymer constituting the hydrogel may be a synthetic polymer such as polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, polyethylene oxide, or a natural polymer such as carrageenan, sodium carboxymethyl cellulose, gelatin, agar, alginate, chitosan, or the like. Any one polymer selected from the group consisting of may be used alone or in combination of two or more polymers, preferably polyvinyl alcohol may be used.

The polyvinyl alcohol is a hydrophilic polymer, which is suitable as a biomaterial, has excellent mechanical and thermal strength, and is a polymer that can be crosslinked by physical method after several times of freezing and thawing, and is mainly used for preparing various hydrogels and membranes. Used.

At this time, from the viewpoint of maintaining the strength of the hydrogel properly, the content of the biocompatible polymer is preferably 5 to 30% by weight relative to water.

In the production method according to the present invention, the polyhydric alcohol serves to improve the adhesion and flexibility of the hydrogel of the present invention. However, it is required that there is no toxicity to the living body. The polyhydric alcohol is preferably composed of one or more selected from alcohols such as ethylene glycol, propylene glycol, 1-3-butylene glycol, hexylene glycol, polyethylene glycol, and among these, polyethylene glycol is more preferable.

In the hydrogel according to the present invention, the content of the polyhydric alcohol is preferably 5 to 20% by weight with respect to water, if less than 5% by weight has a problem that the adhesive strength and flexibility is lowered, if more than 20% by weight This is because there is a problem that the gel strength is lowered.

In the production method according to the present invention, when the temperature of the polyhydric alcohol is low, since the bonding with the biocompatible polymer is not made well, mixing the biocompatible polymer solution and the polyhydric alcohol beforehand to maintain the temperature of at least 75 ℃ desirable.

Next, step 2 is a step of mixing the odor emitting additives in the aqueous solution prepared in step 1.

In the manufacturing method according to the present invention, the odor diverging additive releases the smell of seducing meat when the hydrogel artificial bait swells in water, and serves to improve the tensile strength of the hydrogel. At this time, the odor emitting additives may include shrimp powder, earthworm powder, rice cake, dried chicken blood powder, other animal blood, and the like, but is not limited thereto.

In the production method according to the invention, the content of the odor emitting additive is preferably 0.1 to 20% by weight relative to water. If the content of the odor emitting additives is less than 0.1% by weight, there is a problem in that the smell of seducing meat is not sufficiently released. If the content of the odor-exducing additive is more than 20% by weight, crosslinking is difficult to be achieved, which is a problem in forming a hydrogel.

Next, step 3 is a step of forming an artificial bait of the hydrogel by irradiating the mixed solution prepared in step 2 with radiation.

In the manufacturing method according to the present invention, the artificial bait may be formed by pouring the mixed solution prepared in step 2 into the artificial bait mold and irradiated, the hydrogel formed by irradiating the mixed solution prepared in step 2 It can be cut to form into an artificial bait form, but is not limited thereto. In this case, the artificial bait frame can be used in a general shape or various sizes, thicknesses and shapes depending on the application.

In the production method according to the present invention, the hydrogel can be sterilized at the same time as crosslinking the polymer by irradiation with radiation. In this case, the radiation used may be gamma rays, X-rays, electron beams, and the like.

The radiation dose is preferably 1 to 500 kGy, more preferably 5 to 200 kGy, and even more preferably 50 kGy. If less than 1 kGy, gel formation cannot be expected because effective cross-linking between the biocompatible polymers is not achieved by irradiation, and in the case of 500 kGy, the flexibility of the hydrogel is increased due to the increase in gel strength due to the increase in the amount of crosslinking. It lowers and the radiation deterioration problem of a polymer arises.

Next, step 4 is a step of heat-treating the irradiated hydrogel.

In the manufacturing method according to the present invention, the heat treatment serves to improve the tensile strength and the compressive strength of the hydrogel for artificial bait to form a suitable strength so that the hydrogel can be used as artificial bait.

In the production method according to the invention, the heat treatment is preferably carried out for 10 to 200 minutes at 80 ~ 180 ℃ to effectively improve the tensile strength and compressive strength of the hydrogel.

The artificial bait manufactured through the above manufacturing method eliminates aversion to bait and facilitates the use of the artificial bait. The strength of the artificial bait is improved compared to the conventional hydrogel so that the hydrogel is not released from the water and swells to seduce the fish. Its odor is released and its flexibility allows it to have a living shape, so that fish can easily access the artificial bait, which enables effective fishing, while being very hygienic and significantly reducing water pollution.

Hereinafter, the present invention will be described in more detail by the following examples. However, the following examples merely illustrate the present invention, and the contents of the present invention are not limited by the following examples.

< Example > Hydrogel  Manufacture of used artificial baits

15 g of polyvinyl alcohol (molecular weight 85,000-124,000) was added to 70 ml of distilled water and dissolved using an autoclave. 15 g of polyethylene glycol (molecular weight 400, product of Aldrich) was added to the dissolved polyvinyl alcohol, followed by stirring to distribute the polyethylene glycol uniformly. At this time, when the temperature of the polyethylene glycol is low, it is difficult to bond with the polyvinyl alcohol, so that the temperature of the polyethylene glycol is adjusted to 75 ° C. or more in advance, and the temperature of the polyvinyl alcohol is also maintained at 75 ° C. or more, and then mixed. 5 g of shrimp powder was added to the prepared polyvinyl alcohol / polyethylene glycol solution, mixed, poured into a shrimp-shaped mold, and irradiated at 50 kGy using a gamma ray (Korea Atomic Energy Research Institute, high-level facility). Then, it was put in an oven at 120 ℃ nitrogen was injected, heat treatment for 60 minutes to prepare a artificial bait.

< Experimental Example  1> Hydrogel  Characterization

In the preparation of the hydrogel for artificial bait according to the present invention, the following experiment was performed to determine the effect of polyethylene glycol, distilled water and heat treatment time added to the polyvinyl alcohol on the properties of the hydrogel.

15 g of polyvinyl alcohol (molecular weight 85,000-124,000) was added to 70-85 g of distilled water and dissolved using an autoclave. 0-15 g of polyethylene glycol (molecular weight 400, product of Aldrich) was added to the dissolved polyvinyl alcohol, followed by stirring so that the polyethylene glycol was uniformly distributed. In this case, when the temperature of the polyethylene glycol is low, it is difficult to bond with the polyvinyl alcohol, so that the temperature of the polyethylene glycol is set to 75 ° C. or higher in advance and the temperature of the polyvinyl alcohol is maintained at 75 ° C. or higher, and then mixed. 40 g of the prepared polyvinyl alcohol / polyethylene glycol solution was added to a square dish (90 × 90 × 15 mm) and sealed. The gamma ray (Korea Atomic Energy Research Institute, high-level facility) was irradiated with 50 kGy intensity and placed in a 120 ° C. oven injected with nitrogen to treat hydrogels for 10, 30 and 50 minutes.

Table 1 shows the contents of the components contained in the hydrogel.

division Polyvinyl Alcohol (PVA) Content
(weight%) Polyethylene Glycol (PEG) Content
(weight%) Distilled water content
(weight%) A 15 0 85 B 15 5 80 C 15 10 75 D 15 15 70

The properties of the prepared hydrogel were measured as follows.

(One) Gelation rate  Measure

A-D hydrogels were cut to about 1.3 × 1.3 cm in size, weighed, and then each sample was placed in a 100 ml bottle and filled with purified water. The bottles were placed in a shaking water bath and operated at 37 ° C. and 60 rpm for 72 hours. Then, the samples were taken out of the bottle, placed in a vacuum oven, dried until the weights were parallel, and the dried gel weight was measured. Gel content of the hydrogel was calculated by Equation 1.

(In Equation 1, W _i is the weight of the first dried sample, W _d is the weight of the sample extracted and dried.)

The results are shown in Table 2 and FIG. 1 .

Gelation rate (%) 10 minutes heat treatment 30 minutes of heat treatment 50 minutes of heat treatment A 83.55 87.74 98.58 B 72.29 80.92 81.82 C 47.64 58.61 64.91 D 35.63 53.24 54.36

As shown in Table 2 and Figure 1 , it can be seen that the gelation rate of the hydrogel according to the present invention increases as the polyethylene glycol content is less, the heat treatment time increases.

(2) The tensile strength

The hydrogel was immersed in water for 480 minutes, and then tensile strength was measured by a universal testing machine (Instron 5569). The results are shown in Table 3 and FIG. 2 .

Tensile strength (kPa) 10 minutes heat treatment 30 minutes of heat treatment 50 minutes of heat treatment No heat treatment A 54.82 44.63 89.09 17.81 B 14.81 33.27 72.30 11.82 C 18.34 38.71 150.84 10.30 D 34.13 108.35 337.76 99.43

As shown in Table 3 and Figure 2 , it can be seen that the tensile strength of the hydrogel according to the present invention generally increases as the polyethylene glycol content increases, as the heat treatment time increases. In particular, the polyethylene glycol content is 15% by weight (D), when the heat treatment time 50 minutes it can be seen that the tensile strength is increased by 3 to 20 times or more compared to 10 minutes, 30 minutes. Therefore, the hydrogel for producing artificial baits according to the present invention has a polyethylene glycol content of 15% by weight or more, preferably 50 minutes or more of heat treatment.

(3) compressive strength

The hydrogel was immersed in water for 480 minutes and then the compressive strength was measured by a universal testing machine (Instron 5569). The results are shown in Table 4 and FIG. 3 .

Compressive strength (kPa) 10 minutes heat treatment 30 minutes of heat treatment 50 minutes of heat treatment No heat treatment A 37.11 112.86 640.27 49.37 B 3.71 66.53 396.56 15.65 C 3.36 20.32 679.91 19.52 D 7.55 265.60 1096.78 61.25

As shown in Table 4 and Figure 3 , it can be seen that the compressive strength of the hydrogel according to the present invention generally increases with increasing polyethylene glycol content, heat treatment time increases. In particular, the polyethylene glycol content is 15% by weight (D), when the heat treatment time 50 minutes it can be seen that the compressive strength is increased by 4 ~ 360 times or more compared to 10 minutes, 30 minutes. Therefore, the hydrogel for producing artificial baits according to the present invention has a polyethylene glycol content of 15% by weight or more, preferably 50 minutes or more of heat treatment.

< Experimental Example  2> according to irradiation Hydrogel  Characterization

In the preparation of the hydrogel for manufacturing artificial bait according to the present invention, the following experiment was carried out to determine the characteristics of the hydrogel according to the irradiation.

A hydrogel was prepared in the same manner as in D of Experimental Example 1 except that irradiation was not performed. As a result, the hydrogel that was not irradiated did not form gel well.

Therefore, it can be seen that irradiation is essential in the preparation of the hydrogel for manufacturing artificial bait according to the present invention.

< Experimental Example  3> According to the addition of odor-releasing additive Hydrogel  Characterization

In the preparation of the hydrogel for manufacturing artificial bait according to the present invention, the following experiment was carried out in order to determine the properties of the hydrogel according to the addition of the odor emitting additives.

A hydrogel was prepared in the same manner as in Example 1 except for the addition of shrimp powder as an odor emitting additive during hydrogel preparation. The hydrogel was immersed in water for 480 minutes and then tensile strength was measured using a universal testing machine (Instron 5569).

As a result of the measurement, the tensile strength of the hydrogel before adding the shrimp powder was 337.76 kPa, and the tensile strength of the hydrogel after adding the shrimp powder was found to be 410 kPa, indicating that the tensile strength was increased by 20% than before the addition of the shrimp powder. Therefore, it can be seen that the hydrogel according to the present invention can be usefully used as an artificial bait by increasing the tensile strength by adding an odor divergence additive.

1 is a graph showing the gelation rate of the hydrogel for artificial bait according to an embodiment of the present invention.

Figure 2 is a graph showing the tensile strength of the hydrogel for artificial bait according to an embodiment of the present invention.

3 is a graph showing the compressive strength of the hydrogel for artificial bait according to an embodiment of the present invention.

Claims (15)

Dissolving the biocompatible polymer in distilled water and then mixing the polyalcohol to prepare an aqueous solution (step 1); Mixing the odor divergence additive in the aqueous solution prepared in step 1 (step 2); Irradiating the mixed solution prepared in step 2 to form an artificial bait of hydrogel (step 3); And Method of producing an artificial bait using a hydrogel comprising the step of heat treatment (step 4). The method of claim 1, wherein the biocompatible polymer is selected from the group consisting of polyvinyl alcohol, polyvinylpyrrolidone, polyacrylic acid, polyethylene oxide, carrageenan, sodium carboxymethyl cellulose, gelatin, agar, alginate and chitosan. Method for producing artificial bait using a hydrogel, characterized in that used alone or by mixing two or more polymers. The method of claim 1, wherein the content of the biocompatible polymer is 5 to 30% by weight relative to water. The method of claim 1, wherein the polyhydric alcohol is selected from the group consisting of ethylene glycol, propylene glycol, 1-3-butylene glycol, hexylene glycol, and polyethylene glycol. The method of claim 1, wherein the content of the polyhydric alcohol is 5 to 20% by weight with respect to water, the method of manufacturing artificial bait using a hydrogel. The method of claim 1, wherein the odor divergence additive is selected from the group consisting of shrimp powder, earthworm powder, rice cake, dried chicken blood powder, and animal blood. The method of claim 1, wherein the content of the odor dispersing additive is 0.1 to 20% by weight relative to water. The method of claim 1, wherein the radiation is gamma rays, X-rays, or electron beams. The method of claim 1, wherein the radiation dose is 1 to 500 kGy. The method of claim 1, wherein the heat treatment is a method for producing artificial bait using a hydrogel, characterized in that performed for 10 to 200 minutes at 80 ~ 180 ℃. The method of claim 1, wherein the heat treatment is performed under a nitrogen atmosphere. Dissolving 5 to 30% by weight of polyvinyl alcohol in distilled water and then mixing with 5 to 20% by weight of polyethylene glycol to prepare an aqueous solution (step 1); Mixing the odor diverging additive selected from the group consisting of shrimp powder, earthworm powder, rice cake, dried chicken blood powder, and animal blood in the aqueous solution prepared in step 1 (step 2); Irradiating gamma rays to 1 to 500 kGy in the mixed solution prepared in step 2 to form artificial lures of hydrogels (step 3); And Method of producing an artificial bait using a hydrogel comprising a step (step 4) of a heat treatment for 50 to 200 minutes at a nitrogen atmosphere and 80 ~ 180 ℃. Artificial bait produced by the manufacturing method according to any one of claims 1 to 12. A hydrogel for artificial bait prepared by the manufacturing method according to any one of claims 1 to 12. 15. The hydrogel of claim 14, wherein the hydrogel has a tensile strength of 14.81-337.76 kPa and a compressive strength of 3.36-1096.78 kPa.

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