KR20170130897A - Apparatus and method for synthesizing polymeric nanoparticles by electron beam irradiation - Google Patents

Abstract

The present invention relates to an apparatus for synthesizing polymeric nanoparticles by electron beam irradiation, and a synthesis method. More specifically, the present invention relates to an apparatus for synthesizing polymeric nanoparticles by electron beam irradiation, which enables synthesis of polymeric nanoparticles upon irradiation of a polymeric aqueous solution introduced into a reactor with electron beam. Through injection of the polymeric aqueous solution by spraying the same in a form of fine water particles such as mist into the reactor, continuous mass-production becomes possible. The present invention further relates to a synthesis method thereby.

Description

TECHNICAL FIELD The present invention relates to an apparatus for synthesizing polymer nanoparticles by electron beam irradiation and a method for synthesizing polymer nanoparticles by electron beam irradiation,

The present invention relates to an apparatus for synthesizing polymer nanoparticles by electron beam irradiation, and more particularly to a polymer nanoparticle synthesis apparatus for synthesizing polymer nanoparticles when an electron beam is irradiated to an aqueous solution of polymer introduced into a reactor, To a state of fine water particles such as fog, thereby enabling mass production continuously. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for synthesizing polymer nanoparticles by electron beam irradiation.

Electron beam is used in various industrial fields such as polymer material development, nano material, power semiconductor manufacturing, waste water and exhaust gas purifying, environment friendly paint drying, food and medical device sterilization, packaging container production and sterilization.

Recently, it has been recognized as an effective means for the mass production of nanoparticles. However, it is recognized as a new technology that is more efficient than the conventional chemical method, has a simple process, and does not generate harmful by-products.

Specifically, unlike conventional chemical methods of producing nanoparticles through oxidation-reduction reactions, techniques for producing nanoparticles using electron beams irradiate electrons accelerated near the speed of light to a solution containing nanoparticle raw materials This technique activates electrons in a solution, and the electrons with high reactivity generate a reducing action, converting the sample into uniform nanoparticles in a short time.

The nanoparticles produced through such processes are not only excellent in quality, but also environmentally friendly because they do not use chemical reductants that produce poisonous byproducts compared to conventional chemical nanoparticle manufacturing processes. In addition, it is economically advantageous because it can be manufactured at room temperature, has high energy efficiency, and can be installed with a small irradiation device, thereby reducing investment cost and facility space.

With this technique, domestic patent publication No. 2015-0125217 ("a reaction system capable of efficiently irradiating various kinds of solutions including aqueous solution") has been disclosed. The prior art relates to a reaction system capable of performing nanoparticle preparation, solution reaction and wastewater treatment by irradiating various kinds of samples to be irradiated including aqueous solution with radiation.

As described above, radiation technology such as electron beam is indispensable for the synthesis of pure polymer nanoparticles without other additives. However, in the case of the prior art, since the reaction is caused in the aqueous solution, considering the permeation depth limit of the electron beam and the reduction of the absorbed energy, the continuous continuous production process is almost impossible.

Alternatively, there is a problem that the electron beam energy (MeV) must be considerably increased for mass production. In addition, in this case, the size of the facility for accelerating the electron beam is considerably increased, which is a great limitation in commercialization.

Therefore, there is a need for a technique for overcoming the above-mentioned limitations and enabling an effective continuous mass production.

Korean Patent Publication No. 2015-0125217 ("a reaction system capable of efficiently irradiating various kinds of solutions including an aqueous solution")

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polymer nanoparticle synthesis device capable of continuous production and mass production by maximizing the transmission depth of an electron beam to improve synthesis efficiency of polymer nanoparticles And a method of synthesis.

An apparatus for synthesizing polymer nanoparticles using an electron beam according to an embodiment of the present invention includes: a storage tank for storing a polymer aqueous solution; A reactor in which the polymer nanoparticles are synthesized when an electron beam is irradiated to the introduced aqueous polymer solution, the reactor comprising an inlet end into which the aqueous polymer solution flows from the storage tank; A fine water particle production means for spraying the aqueous polymer solution into the reactor to form a fine water particle state; And an electron beam irradiator for irradiating the electron beam to the reactor.

The preheater may further include a preheater installed on a transfer line between the storage tank and the reactor to heat the polymer aqueous solution to a predetermined temperature.

The apparatus may further include a vibrator attached to a certain region of the inner wall or the outer wall of the reactor to generate vibration.

The apparatus may further include a gas supplier for supplying gas into the reactor.

A heater installed on the inner surface or the wall surface of the reactor to heat the inside of the reactor to a predetermined temperature; And a temperature sensor for measuring a temperature inside the reactor, and the heating temperature of the heater can be adjusted based on the measured value of the temperature sensor.

According to an embodiment of the present invention, there is provided a method of synthesizing polymer nanoparticles using an electron beam, the method comprising: a spraying step of continuously spraying a polymer aqueous solution in the form of fine water particles; And a synthesis step of continuously synthesizing the polymer nanoparticles by irradiating the polymer aqueous solution present in the form of fine water particles with an electron beam.

At this time, the aqueous polymer solution in the form of fine water particles may have a diameter of several nanometers to several tens of nanometers.

Finally, the electron beam irradiated in the synthesis step may have an intensity of 1 kGy to 50 kGy.

The apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention allows the aqueous polymer solution to be injected into the reactor using the means for producing fine water particles. When the polymer aqueous solution is finely divided into fine water particles and maintained in the reactor as mist, when the electron beam is irradiated, the penetration depth of the electron beam is increased, so that a much higher aqueous solution of the polymer can be reacted by the electron beam. As a result, the synthesis efficiency of polymer nanoparticles is greatly improved.

Conventionally, due to the physical properties and limitations of the electron beam, mass continuous process technology can not be secured, and commercialization of polymer nanoparticles synthesized using electron beams has been limited. However, by using the apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention, it is possible to synthesize continuous polymer nanoparticles as the synthesis efficiency of nanoparticles is maximized, and mass production is possible. Therefore, the demand for pure polymer nanoparticles that can be used in various fields such as medical care, cosmetics, functional sensors, etc. is drastically increased, and it is advantageous that it can be put to commercialization.

Further, by further including a vibrator that generates vibration in the reactor, vibrations due to the vibrator are added to the polymer aqueous solution when spraying the aqueous polymer solution, so that the aqueous solution particles can be more finely divided. Therefore, the penetration depth of the electron beam is further increased, and the polymer nanoparticle synthesis efficiency is maximized.

In addition, by further providing a preheater for heating the temperature of the polymer aqueous solution similar to the temperature inside the reactor before injecting into the reactor, more uniform polymer nanoparticles can be synthesized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic block diagram of an apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention; FIG.

1 is a schematic block diagram of an apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention. Hereinafter, the technical idea of the present invention will be described in more detail with reference to Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

As shown, the apparatus for synthesizing high molecular weight or nanoparticles according to an embodiment of the present invention includes a storage tank 10, a reactor 20, a fine water particle producing means 30, an electron beam irradiator 40, a gas feeder 50) and a collection tank (60).

The storage tank 10 is a reservoir in which a polymer aqueous solution is stored, wherein the polymer aqueous solution is an aqueous solution containing a polymer nanoparticle raw material to be synthesized. The storage tank 10 may store the aqueous polymer solution in a compressed state to facilitate injection of the aqueous polymer solution into the reactor 20 in the form of fine water particles.

The reactor 20 is a container in which the polymer nanoparticles are synthesized when an electron beam is irradiated to the introduced polymer aqueous solution. Accordingly, the reactor 20 includes an inlet end through which the aqueous solution flows from the storage tank 10, and a reaction space of a predetermined size is formed therein.

In the present invention, the material of the reactor 20 is not limited. However, it is preferable to use a material which is low in heat or electric conductivity and does not deform due to temperature, radiation or the like and does not chemically react. Examples of the material include titanium, stainless steel, and alloys thereof.

Although not shown in the drawing, an opening is formed on one surface of the reactor 20 facing the electron beam irradiator 40, and it is preferable that a window is formed so that an electron beam can be transmitted to the inside. At this time, any material can be used as long as the material of the window has a property of being able to transmit the electron beam without being damaged by the electron beam.

The inlet end of the storage tank 10 and the reactor 20 are connected through a transfer line 11. Although not shown in the drawing, a pump (not shown) is provided on the transfer line 11, 20). ≪ / RTI >

The apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention may further include a controller (not shown). The control unit controls the operation of the pump provided on the transfer line 11 to appropriately control the transfer amount of the polymer aqueous solution.

The electron beam irradiator 40 is provided outside the reactor 20 and irradiates an electron beam. The electron beam irradiator 40 is disposed at a position opposite to at least one surface of the reactor 20 as described above.

In addition, the fine water particle production means 30 may be provided on the inlet end of the reactor 20 as means for spraying the aqueous solution into the reactor 20. The aqueous polymer solution is not injected into the reactor 20 in a liquid state by the fine water particle production means 30 as in the conventional art but is finely divided and dispersed in the form of fine water particles such as a wet fog.

The penetration depth of the electron beam is about 1000 times different in air and water. Specifically, in the case of an electron beam having 1 MeV energy, the depth of penetration is 4.08 m in air but only 4.37 mm in water. In the case of an electron beam having 0.1 MeV energy, the depth of penetration is 0.13 m in air and 0.14 mm in water.

Therefore, in the apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention, the polymer aqueous solution in the reactor 20 is finely crushed to form fine water particles using the fine water particle production means 30, . When the electron beam is irradiated in the state in which the aqueous solution in the reactor 20 is maintained in the state of mist, the depth of penetration of the electron beam is increased, and much higher aqueous solution of the polymer can be reacted by the electron beam. As a result, the synthesis efficiency of polymer nanoparticles is greatly improved.

In other words, conventionally, as the electron beam is irradiated onto the aqueous solution, the depth through which the electron beam is transmitted is inevitably low, and the nanoparticle synthesis efficiency is inferior. In order to increase the synthesis efficiency, the energy of the electron beam has to be increased. As a result, the size of the facility for accelerating the electron beam has been considerably increased, which has caused a great restriction in commercialization.

However, in the present invention, since the aqueous solution is present in the form of fine water particles inside the reactor 20 by using the means for producing fine water particles 30 as described above, the depth of penetration of the electron beam is much higher than that of the prior art, The polymer nanoparticles can be easily synthesized even when the electron beam is irradiated.

That is, conventionally, due to the physical characteristics and limitations of the electron beam, mass continuous process technology can not be secured, and commercialization of polymer nanoparticles synthesized using electron beams has been limited. However, when the polymer nanoparticle synthesis apparatus according to an embodiment of the present invention is used, the synthesis efficiency of the polymer nanoparticles is maximized, so that continuous synthesis is possible and mass production is possible.

Therefore, the demand for pure polymer nanoparticles that can be used in various fields such as medical care, cosmetics, functional sensors, etc. is drastically increased, and it is advantageous that it can be put to commercialization.

Finally, the gas supplier 50 serves to supply a gas into the reactor 20 to create a gas atmosphere in the reactor 20. The gas may be an inert gas (Inertgas) such as helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) have.

At this time, it is preferable that the gas supplied from the gas supplier (50) is also diffused into the reactor (20) like the aqueous solution.

 In addition, the control unit may be connected to a valve (not shown) provided on the gas transfer line 51 to appropriately control the amount of gas to be supplied. At this time, the amount of the supplied gas may vary greatly depending on the size of the reaction space in the reactor 20, and may also vary depending on the internal temperature of the reactor 20 and the kind of the polymer nanoparticles.

Meanwhile, the fine water particle production means 30 according to an embodiment of the present invention can be selected and used without limitation as long as it is a device for dividing the polymer aqueous solution into a predetermined size into the reactor and ejecting it in the form of fine water particles.

For example, the fine water particle production means 30 is a member having a columnar shape to be fastened in an inlet end of the reactor 20, and is a member having a flow path of a predetermined length passing through one side from which the aqueous polymer solution flows and the other side from which the spray is discharged , And the outflow end of the gas transfer line (51) communicates with the flow path. At this time, the gas is preferably a gas compressed at a high pressure.

When the gas and the aqueous polymer solution are stirred on the flow path of the fine water particle production means 30 and then injected into the reactor 20, the polymer aqueous solution is broken into fine particles as the gas expands rapidly. When such a structure is formed, the size of the fine water particles injected as the polymer aqueous solution is mixed with the gas can be further reduced.

However, the present invention is not limited to this, and the outflow end of the gas transfer line 51 is not communicated with the fine water particle production means 30 but is diffused into the reactor 20 through a diffuser (not shown) May be sprayed.

As described above, when the compressed gas of the gas feeder 50 is not used, the fine water particle production means 30 can be designed to have a different structure. For example, the flow path may be formed to have a very small diameter and to be spirally rotated. When the polymer aqueous solution in the storage tank 10 is discharged at a high pressure by the high pressure pump and flows into the fine water particle production means 30, the polymer aqueous solution rotates while passing through the flow path of the fine water particle production means 30. This is to generate fine water particles using the principle that the liquid expands by the centrifugal force.

At this time, if a large number of fine holes are formed on the other side of the flow path, the fine particles can be sprayed with smaller size fine particles.

Alternatively, in addition to the above-described structure, it is needless to say that a spray nozzle or the like which is commonly used can be used for the fine water particle production means 30. At this time, the injection nozzle is a fog nozzle which generates foggy droplets, and the droplet to be injected may be a particle size of 50 microns or less on average.

As a final example, a vibrator used for a humidifier or the like may be used for the fine water particle production means 30. In this case, the water particles can be discharged in a substantially vapor state, and the depth of penetration of the electron beam can also be increased. At this time, the droplet of the water particle can be almost nano-sized or less.

In addition, the apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention may further include a vibrator (not shown) attached to a certain region of the inner wall and / or outer wall of the reactor 20 to generate vibration .

The vibrator may be provided with a single or a plurality of vibrators at a predetermined position of the reactor 20 as needed, so that the intensity of vibration can be controlled by the vibrator and the control unit.

The vibration generated by the vibrator reduces the size of the fine water particles when the polymer aqueous solution is injected into the reactor 20 to become a fine water particle state.

That is, when the aqueous polymer solution is sprayed, vibrations due to the vibrator are added, and as the aqueous solution particles are finely divided, the penetration depth of the electron beam is further increased, thereby maximizing the synthesis efficiency of the polymer nanoparticles.

As shown in the figure, the polymer nanoparticle synthesis apparatus of the present invention has a structure in which the lower end of the reactor 20 is connected to the collection tank 60 so that the synthesized polymer nanoparticles in the reactor 20 are connected to the transfer line 21 To be collected in the collection tank (60).

At this time, as shown in the figure, it is preferable that a part of the lower part of the reactor 20 has a shape in which the cross-sectional area becomes narrower downward. Therefore, the polymer nanoparticles synthesized in the reactor 20 are collected near the outlet of the lower end of the reactor 20, and can be easily collected in the collection tank 60.

The apparatus for synthesizing polymer nanoparticles of the present invention may further comprise a recovery line 22 for recovering unreacted aqueous solution in the reactor 20 and transferring the unreacted aqueous solution to the storage tank 10.

At this time, since the generated nanoparticles are a gel (solid) and the unreacted aqueous solution is a liquid, it is possible to easily separate the nanoparticles from the unreacted aqueous solution by using a filter or a multi filter for separating solid and liquid.

In order to further increase the synthesis efficiency of the polymer nanoparticles, the temperature of the polymer aqueous solution flowing into the reactor 20 is preferably controlled appropriately. The temperature of the aqueous polymer solution inside the storage tank 10 is lower than the internal temperature of the reactor 20 as the storage tank 10 is located at room temperature.

Therefore, when the polymer aqueous solution having a relatively low temperature is injected into the reactor 20, the newly introduced fine water particles and the fine water particles staying in the reactor 20 for a predetermined time, that is, A temperature difference occurs between the fine water particles. This temperature difference leads to a problem that makes it difficult to synthesize uniform polymer nanoparticles.

The apparatus for synthesizing polymer nanoparticles according to an embodiment of the present invention includes a preheater (not shown) provided on the transfer line 11 between the storage tank 10 and the reactor 20 for heating the aqueous solution to a predetermined temperature 70). By heating the temperature of the polymer aqueous solution similar to the temperature inside the reactor 20 before being injected into the reactor 20 through the preheater 70, more uniform polymer nanoparticles can be synthesized.

At this time, the preheater 70 may be a heating element provided at a predetermined length outside the transfer line 11 as shown in the figure, and may be temperature-controlled based on the external temperature and the sensing value of the temperature sensor 90 And is preferably connected to the control unit. However, as in the case of the heater 80, the preheater 70 may be selected and used variously as long as it is for heating the aqueous polymer solution flowing in the transfer line 11 to a predetermined temperature.

In order to synthesize polymer nanoparticles, it is necessary to set various process conditions appropriately, so that it is possible to synthesize a reproducible polymer nanoparticle having a certain size.

That is, the size of the fine water particles injected into the reactor 20, the temperature in the reactor 20, the gas inflow amount for forming the gas atmosphere, and the irradiation energy of the electron beam are kept constant, .

For this purpose, it is preferable that a heater 80 for controlling the internal temperature of the reactor 20 and a temperature sensor 90 for measuring the internal temperature of the reactor 20 are provided. Although the heater 80 is illustrated as being provided in a certain region of the outer wall surface of the reactor 20, the position of the heater 80 may be variously installed, such as the inner wall surface of the reactor 20, (20) can be used without restriction as long as the internal temperature can be adjusted. There is no limitation on the size, shape, and operating mode of the heater 80. For example, the heater 80 may be wound with a predetermined number of times to generate heat as electricity is applied thereto.

The control unit may control the heating temperature of the heater 80 based on the temperature inside the reactor 20 sensed by the temperature sensor 90 to maintain the internal temperature of the reactor 20 constant.

Specifically, the temperature inside the reactor 20 may vary depending on the kind of the sample to be irradiated and the purpose of irradiation, but may be 40 to 100 캜, preferably 60 to 80 캜, more preferably 50 to 70 캜 have. Particularly, the temperature inside the reactor 20 can affect the size of the nanoparticles to be produced. If the temperature is lower than 40 ° C., nanoparticles are formed but the nanoparticle size uniformity is not good. When the temperature is higher than 100 ° C., Bulk particles can be formed due to an increase in polymer concentration.

The irradiation energy of the electron beam irradiator 40 is advantageous in that the reaction speed becomes faster and more uniform as the irradiation energy increases. However, in this case, the electron beam irradiator 40 must be enlarged to increase the volume of the whole polymer nano particle synthesizer.

Taking this into consideration, the electron beam can be irradiated at an intensity of 0.2 to 0.3 MeV at 1 to 50 kGy. When the electron beam dose is less than 1 kGy, the crosslinking does not occur properly. If the electron beam dose is more than 50 kGy, the particle size of the polymer nanoparticles produced may become larger and the particle distribution may not be uniform. In the present invention, the irradiation time of the radiation is not limited, and the irradiation time can be determined according to the amount of the absorbed energy. For example, when irradiating for 20 seconds at a current of 1 mA, it can proceed for 10 seconds at a current of 2 mA.

In addition, the aqueous polymer solution in the form of fine water particles injected into the reactor may vary depending on the size of the polymer nanoparticles to be synthesized, but is preferably a diameter of several nanometers to several hundred nanometers, and preferably a diameter of 10-100 nanometers. If the size of the fine water particles is less than several nanometers, it may not be possible to effectively absorb the electron beam. If the size of the fine water particles exceeds several hundred nanometers, the penetration depth of the electron beam may be reduced and the efficiency of synthesizing the polymer nanoparticles may be decreased And the nanoparticles of a desired size can not be synthesized due to the coagulation effect.

Hereinafter, a method for synthesizing polymer nanoparticles using the apparatus for synthesizing polymer nanoparticles according to one embodiment of the present invention will be described step by step.

The method of synthesizing polymer nanoparticles according to an embodiment of the present invention may include a spraying step and a synthesis step.

The injection step is a step of continuously spraying the polymer aqueous solution in the form of fine water particles. In the synthesis step, the polymer nanoparticles are continuously synthesized by irradiating the polymer aqueous solution present in the form of fine water particles with an electron beam.

Specifically, the injection step injects the polymer aqueous solution stored in the storage tank 10 into the reactor 20, and injects the injected water using the fine water particle production means 30. Thus, the aqueous polymer solution inside the reactor 20 through the injection step S100 is in the form of fine water particles and exists at a low density such as air.

Thereafter, an electron beam is irradiated to the polymer aqueous solution by using an electron beam irradiator 40 provided outside the reactor 20 in the synthesis step. At this time, since the polymer aqueous solution in the reactor 20 is kept in the same state as the mist, the electron beam can penetrate deeply as if it is irradiated in the air. Therefore, much higher polymer aqueous solution fine particles can be reacted by the electron beam, so that the synthesis yield of the polymer nanoparticles is greatly improved. Thereafter, the synthesized polymer nanoparticles are collected in a collection tank 60.

Meanwhile, the synthesis method according to an embodiment of the present invention preferably further includes a preheating step of heating the aqueous polymer solution to a predetermined temperature before the injection step.

That is, before the aqueous polymer solution flows through the transfer line 11 and flows into the reactor 20, the preheater 70 is preheated to a predetermined temperature using the preheater 70 provided on the transfer line 11. Thus, by heating the aqueous polymer solution to a temperature similar to the internal temperature of the reactor 20 in advance, the temperature distribution of the polymer aqueous solution particles in the reactor 20 becomes uniform. Therefore, not only the synthesis efficiency of the polymer nanoparticles is increased but also the size of the synthesized polymer nanoparticles is uniformized.

In addition, when the vibration generated by the vibrator is added at the injection stage in injecting the polymer aqueous solution, the aqueous polymer solution may be broken into a smaller size and injected into the reactor 20. As a result, the penetration depth of the electron beam is further increased, thereby maximizing the synthesis efficiency of the polymer nanoparticles.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Storage tank
11: Polymer aqueous solution transfer line
20: Reactor
21: Polymer nanoparticle transfer line
22: recovery line
30: Means for producing fine water particles
40: electron beam irradiator
50: gas supply
51: Gas transfer line
60: Collection tank
70: Preheater
80: Heater
90: Temperature sensor

Claims (8)

As an apparatus for synthesizing polymer nanoparticles using an electron beam,
A storage tank for storing a polymer aqueous solution;
A reactor in which the polymer nanoparticles are synthesized when an electron beam is irradiated to the introduced aqueous polymer solution, the reactor comprising an inlet end into which the aqueous polymer solution flows from the storage tank;
A fine water particle production means for spraying the aqueous polymer solution into the reactor to form a fine water particle state; And
An electron beam irradiator for irradiating the electron beam to the reactor;
Wherein the polymer nanoparticles are synthesized by electron beam irradiation.
The method according to claim 1,
A preheater installed on a transfer line between the storage tank and the reactor for heating the polymer aqueous solution to a predetermined temperature;
Wherein the polymer nanoparticle synthesizing apparatus further comprises an electron beam irradiation apparatus.
The method according to claim 1,
A vibrator attached to a certain region of an inner wall or an outer wall of the reactor to generate vibration;
Wherein the polymer nanoparticle synthesizing apparatus further comprises an electron beam irradiation apparatus.
The method according to claim 1,
A gas supplier for supplying gas into the reactor;
Wherein the polymer nanoparticle synthesizing apparatus further comprises an electron beam irradiation apparatus.
The method according to claim 1,
A heater installed inside or on the wall of the reactor to heat the inside of the reactor to a predetermined temperature; And
A temperature sensor for measuring a temperature inside the reactor;
Further comprising:
Wherein the heating temperature of the heater is controlled based on the measured value of the temperature sensor.
As a method for synthesizing polymer nanoparticles using an electron beam,
A spraying step of continuously spraying the aqueous polymer solution in the form of fine water particles; And
A synthesis step of continuously synthesizing polymer nanoparticles by irradiating the polymer aqueous solution present in the form of fine water particles with an electron beam;
Wherein the polymer nanoparticles are synthesized by electron beam irradiation.
The method according to claim 6,
In the aqueous polymer solution in the form of fine water particles,
Wherein the diameter of the polymer nanoparticles is from several nanometers to several tens nanometers.
The method according to claim 6,
The electron beam irradiated in the synthesizing step may be,
Wherein the intensity of the electron beam is in the range of 1 kGy to 50 kGy.

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