KR101968316B1 - Medical container containing biodegradable polymer plastics - Google Patents

Abstract

The present invention relates to a medical container made of biodegradable polymer plastic and, more specifically, to a medical container such as a culture container, a test tube, a syringe, a drug container and the like, made of biodegradable polymer plastic including a mineral-based powder containing fullerene, a woody plant-based powder obtained by crushing wood containing a phytoncide component, a natural resin derived from sugar cane, and additives such as wax and the like. According to the present invention, a medical container such as a culture container, a test tube, a syringe, a drug container, and the like is manufactured by using a polymer natural resin and a natural antimicrobial material, which can be naturally degraded, thereby significantly solving environmental pollution problems caused by wasted medical instruments, having effects such as an antibacterial effect, antioxidation, electromagnetic wave shielding, deodorization, anti-allergy, etc., and preventing decomposition of a drug for a long period of time. Also, raw materials can be easily purchased by utilizing a material which can be easily obtained in nature, and price variation of raw materials is low, thereby reducing production costs.

Description

Technical Field [0001] The present invention relates to a medical container containing biodegradable polymer plastics,

The present invention relates to functional polymer plastics used in medical containers containing biodegradable polymer plastics. More particularly, the present invention relates to biodegradable polymer plastics which can be decomposed spontaneously by using polymeric natural resins and natural antibacterial materials, A culture container, a test tube, a syringe or a drug container.

Medical wastes that cause human infection or environmental pollution are increasing every year, but the actual situation of treatment is pointed out to be very poor. Medical waste, which was 43,000 tons in 2004, has nearly tripled to 124,500 tons in 2011, according to data from the National Assembly Legislative Research Center. During this period, the average annual increase is more than 10,000 tons. As the interest in people's health increases, the use of medical institutions increases and the use of disposable medical devices increases in order to protect patients and medical personnel from infection. In fact.

Glass and petroleum plastic materials used in existing medical containers are widely used for various molded products, packaging materials, industrial materials and consumer goods due to their excellent physical properties, various functions and low price. However, these products are not decomposed naturally in a proper period, It has emerged as a cause of environmental pollution, and released environmental hormones such as bisphenol-A, which has been found to cause harm to the health of people who use it.

As a method for treating such glass and petroleum-based plastic wastes, methods such as landfill, incineration, and recycling have been conventionally employed. However, due to problems with each of these methods, it is possible to completely decompose into water, carbon dioxide and methane gas within several months to several years Research on degradable plastics is proceeding in a variety of ways. The degradable plastics are classified into biodegradable plastic (biodegradable plastic), which is degraded by microorganisms and enzymes, photochemical and thermal Photo-Degradable Plastic where plastic decomposition occurs due to chemical bond cleavage due to reaction, Oxidation-Degradable Plastic where plastic decomposition occurs by oxidation reaction due to temperature, Plastic) and decomposition by hydrolysis reaction Hydrolytically-Degradable Plastics. Among them, researches on biodegradable, photodegradable plastics or composite decomposable plastics thereof have been actively conducted. In order to reduce the use of petroleum plastics, There has been developed a technique for mixing waste such as coffee, rice husks, and wheat husks into plastic, but the physical properties of the final product have deteriorated and recycling after use has been difficult.

Phytoncide is a mixture of chemicals released by plants to combat pests, fungi, and germs, and has antimicrobial and antimicrobial properties. Phytoncide, released from perilla trees, has excellent antibacterial and natural healing power The undiluted solution extracted from cottonwood and the fragments of wood wool are applied to treatment of patients related to the atmosphere such as indoor environment purification and atopy (Korean Patent No. 10-1152684, No. 10-1305384, No. 10-0930317).

Phytoncide is not a single component but a mixture of components with different melting points and solubilities of more than 50 kinds, so it is very difficult to control the components and the release rate. It is difficult to control the release and release rate depending on the ambient environment such as temperature and humidity There is a problem that the direction density of phytoncide is excessively high, which is harmful to the human body.

For this reason, it is required to develop a product capable of maintaining phytoncide performance while easily storing phytoncide and continuously emitting phytoncide.

Fullerene is usually referred to as a third carbon isomer, because it has a different form of carbon, such as graphite or diamond, or graphite or diamond. Fullerene has a carbon ring in which carbon (C) atoms are arranged in a pentagonal or hexagonal shape. These carbon rings are combined in a substantially spherical shape to form a hollow. Generally, fullerene has a carbon number of C60 to C80 or greater. Fullerene, in its structural form, has the shape of a soccer ball, or a shape such as a soccer ball-like shape, and has a hollow-phase structural characteristic. Fullerene has excellent physical and chemical properties due to the above-mentioned carbon ring arrangement and specific structure of the hollow. Specifically, fullerene has a variety of useful physical and chemical properties such as strong antioxidant, adsorptive, catalytic (decomposability of adsorbed material), bactericidal power, electromagnetic wave absorptivity, electrical conductivity, and in some cases higher than diamond Its application value is high.

Generally, fullerene is produced by artificially synthesizing carbon black or graphite as a raw material through an arc discharge method or a continuous combustion method, or by extracting it from natural minerals. Some natural minerals contain fullerene or similar fullerenes. From these natural minerals, fullerene was extracted by using an electrochemical method and a polar solvent extraction method (JP-A-7-315987).

Fullerene is a powerful natural antioxidant that increases the immunity of humans to many diseases. It absorbs various pollutants on the earth in a porous structure, purifies water and air, and decomposes adsorbed contaminants by themselves. Pseudomonas aeruginosa, Staphylococcus aureus, and other harmful bacteria. It is widely used in health functional products because it cuts harmful electromagnetic waves and emits a large amount of far infrared rays. Currently, most of the methods that are widely used include processing gypsum containing a large amount of fullerene into a brick form, stacking it on a wall or floor for use in construction, or finely crushing the water into a water bottle for drinking or finely grinding, It is limited to simple use (Korean Patent No. 10-1515534, and Korean Patent No. 10-1633302).

For this reason, it is required to develop a new material that can maintain the unique performance and function of Fullerene while being easy to use and a product using the new material.

The object of the present invention is to provide a method for producing a phar- maceutical drug, which comprises a mineral-based powder containing fullerene, a neck-base powder obtained by shredding a tree containing phytoncide components, a natural- A test tube, a syringe, a drug container, and the like.

Another object of the present invention is to provide a medical container which has antimicrobial, antioxidant, electromagnetic wave shielding, deodorization, antiallergic effects and can prevent the decay of the drug for a long time and can reduce the manufacturing cost.

In order to attain the above object, the present invention provides a medical container composed of a biodegradable polymer plastic including a mineral base powder containing fullerene, a neck base powder containing phytoncide, and a natural resin derived from sugarcane.

In addition, the present invention relates to a pharmaceutical preparation comprising a biodegradable polymer plastic comprising a mineral base powder containing fullerene, a neck base powder containing phytoncide and a natural resin derived from sugarcane, a culture container, a test tube, a syringe or a drug container Lt; / RTI >

The present invention also relates to a method for producing a hair follicle comprising: i) mixing a mineral powder (first resin) containing fullerene, a neck base powder (second resin) containing phytoncide, and a natural resin derived from sugarcane (third resin); ii) adding a compatibilizer, a lubricant, a biodegradation agent and a bleaching agent to the mixture of step i); iii) extruding the mixture of step ii) at a high temperature and then dry-cooling the mixture; And iv) molding the extrudate of step iii). The present invention also provides a method of manufacturing a medical container comprising the biodegradable polymer plastic.

In addition, the present invention relates to a method for producing a hair follicle comprising: i) mixing a mineral powder (first resin) containing fullerene, a necklace powder (second resin) containing phytoncide, and a natural resin derived from sugarcane (third resin); ii) adding a compatibilizer, a lubricant, a biodegradation agent and a bleaching agent to the mixture of step i); iii) extruding the mixture of step ii) at a high temperature and then dry-cooling the mixture; And iv) molding the extrudate of step iii). The method comprises the steps of: (a) forming a container of a drug, a culture container, a test tube, a syringe or a drug container;

The present invention can dramatically solve the environmental pollution problem caused by a lung medical device by producing a medical container such as a culture container, a test tube, a syringe, and a drug container using a natural natural resin and natural antibacterial material.

In addition, it has antimicrobial, antioxidant, electromagnetic wave shielding, deodorization, antiallergic effects, and can prevent drug corruption for a long time.

Further, by utilizing materials readily available in nature, the purchase of raw materials is easy, and the price volatility of the raw materials is low, so that the manufacturing cost can be reduced.

1 is a view showing a manufacturing process of a biodegradable polymer plastic for medical use according to the present invention.

Hereinafter, the present invention will be described in detail.

In the following description of the present invention, a detailed description of known configurations and functions will be omitted.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and should be construed in accordance with the technical meanings and concepts of the present invention.

The present invention provides a medical container composed of a biodegradable polymer plastic including a mineral base powder containing fullerene, a neck base powder containing phytoncide, and a natural resin derived from sugarcane.

The fullerene has a carbon ring in which carbon (C) atoms are connected in a pentagonal or hexagonal manner, and these carbon rings are bonded to form various shapes of spheres or polyhedra, and the number of carbon atoms is not limited. The fullerene may include fullerenes having a carbon number of C ₆₀ to C ₅₄₀ , as well as pseudoline fullerenes having a carbon number smaller or larger than this. In particular, buckminster flourine (C ₆₀ ) and its variants C ₇₀ , C ₇₂ , C ₇₆ , C ₈₀ , C ₁₈₀ , C ₂₄₀ and C ₅₄₀ are preferred.

The natural mineral containing fullerene is not particularly limited as long as it contains fullerene. The content may be from 20 wt% to 99 wt%, and the balance is an inorganic matter. The natural minerals may be selected, for example, from clay minerals and shungite minerals. That is, the natural minerals may be pure whiteness minerals or pure natural minerals may be mixed with other natural minerals. The pure-earth mineral is mainly composed of a silicon compound (silicate) such as silicate, and has a high content of carbon components, particularly a content of fullerene, which is useful in the present invention. That is, the pure minerals contain 25% or more, more specifically 25 to 50% by weight of fullerene.

The mineral powders can be prepared by pulverizing natural minerals containing fullerene, preferably pure minerals, to an appropriate size. Natural minerals can be ground by widening the surface area, so that the extraction rate of carbon components in the extraction process can be improved. For example, it may be milled to a size of 200 to 400 mesh and is preferably milled to a size of 300 mesh. At this time, if the particle size of natural minerals is too small, it may be difficult to handle, and if it is too large, the extraction rate of carbon components may be lowered.

At this time, the pulverizing method is not limited. The pulverization method can be selected from a variety of methods commonly used in the field of powder technology. The pulverization can be carried out by, for example, a ball mill, an attrition mill, a jet mill, a rotary mill, and a vibration mill, But is not limited thereto.

The tree system containing the phytoncide may be any one of pine, fir, coniferous tree, cedar, Japanese white bark, and white flour, or a mixture thereof. Any tree containing a large amount of phytoncide Available.

The neck base powder can be prepared by pulverizing a wood containing a large amount of phytoncide to an appropriate size. For example, it may be milled to a size of 200 to 400 mesh and is preferably milled to a size of 300 mesh. At this time, if the particle size of the wood powder is too small, it may be difficult to handle, and if it is too large, the extraction rate of the phytoncide component may be lowered.

The sugarcane-derived natural resin is produced by cultivating and harvesting sugarcane, pulverizing sugarcane to form a sugar solution, separating and extracting sugar from the sugar solution, fermenting molasses with acetic acid to produce alcohol (C ₂ H ₅ OH) and the configuration process, the process for the dehydration of water in the alcohol constituting the ethylene (C ₂ H ₄₎ and, by polymerization of the ethylene to CH _{3 - [- CH 2 -CH 2]} n-CH 3 and Can be produced by a process of forming polyethylene having the same molecular structure. For example, it is preferable that the juice of sugar cane be composed of 50 to 150 mesh, preferably 100 mesh powder, which is fermented and dried at a high room temperature (27 to 34 ° C).

Preferably, the mixture comprises 15 to 30 parts by weight of the mineral powder, 10 to 20 parts by weight of the neck base powder, and 50 to 70 parts by weight of the natural resin derived from sugar cane, based on 100 parts by weight of the whole plastic. This is a proper mixing ratio to optimize the biodegradable polymer plasticity and the performance of phytoncide and fullerene. At this time, when the mixing ratio of the natural resin is high, the phytoncide and fullerene performances are deteriorated. If the mixing ratio of phytoncide and flourine is high, molding is difficult and the product quality can not be excellent.

The biodegradable polymer plastic may include an additive including wax, and the additive preferably includes 1 to 10 parts by weight based on 100 parts by weight of the total plastic.

Concretely, as additives other than wax, a compatibilizer may be added for the surface activity of the mixture, a lubricant which constitutes the fluidity of the molding well during the molding of the mixture, an oxidizing agent which facilitates the decomposition of the plastic and a decoloring agent, .

The compatibilizer is a material which imparts compatibility by removing a releasing property between a nonpolar natural resin and a polar powder, and examples thereof include glycidyl methacrylate, ethylene vinyl alcohol, polyvinyl alcohol and ethylene vinyl acetate Or a polyolefin-based or polyolefin-derived polymer may be used, and any of those conventionally used in the art can be used without limitation. Such a compatibilizing agent is preferably mixed with 2 to 4 parts by weight based on 100 parts by weight of the whole plastic.

The above-mentioned plastic lubricant may be a mixture containing the first resin and the second resin, strengthening bonding or affinity between the first resin and the second resin, reducing frictional heat generated during extrusion and preventing thermal decomposition, As a component to be added to perform the work, the physical property is configured to be able to provide smooth workability while keeping similar to the base material. The lubricant is preferably mixed in an amount of 1 to 2 parts by weight based on 100 parts by weight of the whole plastic.

The lubricant may be one or a mixture of two or more selected from the group consisting of natural materials such as stearates, palmitates and laurates. More preferably, calcium stearate, zinc stearate or a mixture thereof can be used.

The oxidizing agent for biodegradation may be added to decompose the polymer chains and may be used without limitation as long as it is an oxidizing oxidant for plastic decomposition commonly used in the art. As a general oxidation promoting agent, iron (Fe ), Zinc (Zn), manganese (Mn), and titanium (Ti). It is preferable that 0.5 to 1 part by weight of the oxidizing agent is mixed with 100 parts by weight of the whole plastic.

The bleaching agent may be a mixture of one or more selected from the group consisting of a sulfite bleaching agent, sodium chlorite, and hydrogen peroxide. In order to construct various colors with polymer plastic, it is necessary to decolorize the original color so that another color can be formed, so that decolorizing agent is added. It is preferable that 1 to 2 parts by weight of the decolorizing agent is mixed with 100 parts by weight of the whole plastic.

The biodegradable polymer plastic may further include an antibacterial component. Examples of the antimicrobial component include inorganic antimicrobial agents (antimicrobial zeolite, metal ion-containing glass powder, ceratite, diatomaceous earth and the like), metallic antibacterial agents (silver, copper, zinc, titanium oxide, aluminum, metal oxides and chlorides) Antimicrobial agents such as guanidine antibiotics, copper compound antimicrobial agents (regenerated cellulose sulfide-containing cellulose, fluoroacrylonitrile copper sulfide complexes), organic antimicrobial agents (amidazole derivatives, sulfone derivatives and phenol derivatives) Chitosan, tea, bamboo, wasabi, etc.) are all available. Particularly, the antimicrobial components include silver (Ag), silver nitrate, calcium phosphate substituted with silver ion, chitosan, shell, gelatin, ceratite, diatomaceous earth, loess, clay, It is preferably one or a mixture of two or more selected from the group consisting of zirconium, calcium phosphate, benomyl, nisin, organic acids such as propionate, benzoate and sorbate Do.

The medical container may be any one selected from the group consisting of a drugstore, a culture container, a test tube, a syringe, and a drug container, but is not limited thereto and is applicable to all plastic containers used for medical treatment.

In addition,

(i) mixing a mineral base powder (first resin) containing fullerene, a neck base powder (second resin) containing phytoncide, and a natural resin derived from sugarcane (third resin);

ii) adding a compatibilizer, a lubricant, a biodegradation agent and a bleaching agent to the mixture of step i);

iii) extruding the mixture of step ii) at a high temperature and then dry-cooling the mixture; And

iv) molding the extrudate of step iii). < IMAGE >

In the above manufacturing method, it is preferable that 15 to 30 parts by weight of the mineral powder, 10 to 20 parts by weight of the natural base powder and 50 to 70 parts by weight of the natural resin derived from cane sugar are contained in 100 parts by weight of the total plastic in the step i) . This is a proper mixing ratio for optimizing the physical properties and degradability of biodegradable polymer plastics.

The step (i) may include a step of coating the wood base powder with a coating agent. The neck base powder is made of a porous material, so that the coating agent is deposited on the porous material to form a coating body, thereby preventing moisture reabsorption of the neck base powder and facilitating compatibility with the natural resin during the mixing process. At this time, it is preferable to gradually increase the coating temperature from 70 ° C to 110 ° C over 15 to 30 minutes when the coating agent is applied.

In the above production method, the step ii) may be carried out at the same time as the step i) or sequentially.

In the above production method, the antibacterial component may additionally be contained in step i) or ii). Examples of the antibacterial component include inorganic antimicrobial agents (antibacterial zeolite, metal ion-containing glass powder, ceratite, diatomaceous earth and the like), metal antimicrobial agents (silver, copper, zinc, titanium oxide, aluminum, metal oxides and chlorides) Antimicrobial agents such as guanidine antibiotics, copper compound antimicrobial agents (regenerated cellulose sulfide-containing cellulose, fluoroacrylonitrile copper sulfide complexes), organic antimicrobial agents (amidazole derivatives, sulfone derivatives and phenol derivatives) Chitosan, tea, bamboo, wasabi, etc.) are all available. Particularly, the antimicrobial components include silver (Ag), silver nitrate, calcium phosphate substituted with silver ion, chitosan, shell, gelatin, ceratite, diatomaceous earth, loess, clay, It is preferably one or a mixture of two or more selected from the group consisting of zirconium, calcium phosphate, benomyl, nisin, organic acids such as propionate, benzoate and sorbate Do.

In the above production process, it is preferable to mix at a temperature of 70 to 100 ° C in the above steps i) and ii), and more preferably to mix at a temperature of 80 to 90 ° C. The mixing time is preferably gradually mixed for 15 to 35 minutes. When the mixing time is less than 15 minutes, it is difficult to mix thoroughly. When the mixing time is more than 35 minutes, oxidation reaction occurs and yellowing may occur in the mixture.

2 to 4% by weight of a compatibilizing agent is mixed to facilitate the mixing when the resins are mixed, 1 to 2% by weight of a lubricant is mixed to improve fluidity of the resin mixture, In order to facilitate biodegradation of the mixture, 0.5 to 1% by weight of an oxidizing agent may be mixed, and 1 to 2% by weight of a decoloring agent may be mixed so as to realize various colors of the polymer natural resin as a resin mixture.

 At this time, the compatibilizing agent may be any one of commercially available glycidyl methacrylate, ethylene vinyl alcohol, polyvinyl alcohol, and ethylene vinyl acetate. The lubricant may be commercially available stearate, The biodegradable agent may be any one of metals such as iron, zinc, manganese and titanium which is an oxidizing agent. The bleaching agent may be selected from the group consisting of a sulfurous acid bleach, sodium hypochlorite, , Hydrogen peroxide may be used.

In the above manufacturing method, the extrusion in step iii) is preferably performed at a temperature of 200 to 300 ° C. When the respective resins are mixed and the mixture of the additives is mixed, the mixture is gradually mixed at a temperature of 80 to 90 DEG C, and the mixture is plasticized at a temperature of 200 to 300 DEG C and a pressure of 5 kg / And is extruded in a molding machine.

In the above manufacturing method, the medical container may be any one selected from the group consisting of a drugstore, a culture container, a test tube, a syringe, and a drug container, but is not limited thereto and is applicable to all plastic containers used for medical treatment.

Hereinafter, the present invention will be described in detail with reference to Examples and Experimental Examples. However, the following Examples and Experimental Examples are merely illustrative of the present invention, and the present invention is not limited to the following Examples and Experimental Examples.

≪ Example 1 >

In the case of mineral powders, pure natural minerals from Russia were used as the natural minerals, which were analyzed to contain silicate (SiO ₂ ) as the main component and to contain about 28 wt% of carbon (C). The pure minerals were milled using a ball mill to prepare a powder having a size of 300 mesh.

In the case of tree - based powder, a tree composed of pine, fir, and perilla trees mixed at the same ratio was lyophilized at a temperature of minus 50 ° C and then pulverized using a ball mill to prepare a powder having a size of 300 mesh.

In the case of natural resin, polyethylene derived from sugar cane was used.

20 weight% of mineral powder, 15 weight% of neck base powder, 60 weight% of natural resin derived from cane sugar, 2 weight% of olefin derived polymer as compatibilizing agent, 1 weight% of calcium stearic acid as lubricant, 1 weight% 1% by weight of sodium chlorite as a decoloring agent was slowly mixed at a temperature of 85 캜 for 25 minutes. The mixture was plasticized at a temperature of 250 캜 and extruded at a pressure of 5 kg / cm 2 in a molding machine, After cooling, the polymer pellets were cut into 1 to 3.5 mm thickness and 1 to 3.5 mm length when they were completely cured at room temperature.

≪ Example 2 >

15 mass% of the mineral powder, 10 mass% of the neck base powder, and 70 mass% of the natural resin derived from sugar cane were mixed and the remaining process was performed in the same manner as in Example 1 to prepare polymer pellets.

≪ Example 3 >

The polymer pellets were prepared in the same manner as in <Example 1> except that 30 wt% of the mineral powder, 20 wt% of the neck base powder and 50 wt% of the natural resin derived from sugar cane were mixed.

<Example 4>

10 mass% of the mineral powder, 5 mass% of the neck base powder, and 80 mass% of the natural resin derived from sugar cane. The remaining process was the same as that of Example 1 to prepare polymer pellets.

&Lt; Example 5 >

The polymer pellets were prepared by mixing 35 wt% of the mineral powder, 25 wt% of the neck base powder, and 40 wt% of the natural resin derived from cane sugar, and the remaining steps were performed in the same manner as in <Example 1>.

&Lt; Comparative Example 1 &

The polymer pellets were prepared by mixing 35% by weight of mineral powder and 60% by weight of a natural resin derived from cane sugar, except for the neck base powder, and the remaining process was the same as in <Example 1>.

&Lt; Comparative Example 2 &

The polymer pellets were prepared in the same manner as in <Example 1> except that the mineral base powder was mixed with 35 wt% of the neck base powder and 60 wt% of the natural resin derived from sugar cane.

<Experimental Example>

<1-1> Biodegradability test

The biodegradability of the prepared polymer pellets was measured.

For the measurement of biodegradability, tests were conducted according to KS M ISO 14855-1 (Determination of aerobic biodegradability and decay of plastics under composting conditions - Determination of carbon dioxide generated by titration).

The test was carried out in dark or diffused light, with no gas that could maintain a constant temperature of 58 ± 2 ° C and inhibit microbial activity. Standard composts complying with KS M ISO 14855-1 were used and compost was produced in a properly operated aerobic composting plant and used sufficiently aerated compost as inoculum. The total dry solids content should not exceed 50-55% of the wet solids content and the volatile solids content should not exceed 15% of the wet solids and 30% of the dry solids content. The water content was maintained at approximately 50% and the inoculum was allowed to generate 50 to 150 mg of carbon dioxide per gram of volatile solids during the first 10 days of the test. TLC (thin film chromatography) grade cellulose having a particle size of 20 mu m or less was used as the standard material used for the test.

0.4 N potassium hydroxide aqueous solution and 2.0 N barium chloride aqueous solution were mixed at a ratio of 5: 1 in order to collect carbon dioxide generated in the composting process. To capture the captured carbon dioxide, the capture bottle was separated at regular intervals. The separation time was determined according to the rate of biodegradation. The separated collecting bottles were sufficiently agitated, and then 12 mL was taken, placed on a magnetic stirrer, and 2 to 3 drops of phenolphthalein aqueous solution were dropped. The solution was titrated with a 0.2N hydrochloric acid aqueous solution until the pink color became colorless while stirring.

The end of the test was incubated for 6 months until reaching a stasis. After the end of the test, the biodegradability was calculated. The biodegradability was calculated as follows. First, the theoretical carbon dioxide emission was calculated, the generated carbon dioxide was calculated, and the biodegradability was calculated according to the following formula.

(1) Calculation of theoretical CO2 emission

ThCO ₂ = M _TOT x C _TOT x 44/12

M _TOT : Amount of total dry solids in the test material added to the compost at the start of the test (g)

C _TOT : Percentage of organic carbon contained in the total dry solids of the test substance (g / g)

44, 12: molecular weight of carbon dioxide and atomic weight of carbon

(2) Calculation of generated carbon dioxide

Xmg of CO ₂ = 44 x 1/2 x (20 - mL HCL) x 0.2 moles

The amount of hydrochloric acid used in the titration with 0.2N hydrochloric acid is taken as mL HCL and the amount of carbon dioxide generated is calculated using the above formula.

(3) Calculation of biodegradability

D _t = [(CO ₂ ) _T - (CO ₂ ) _B / ThCO ₂ ] × 100

(CO ₂ ) _T : Cumulative amount of carbon dioxide generated from the composting container containing the test substance (g)

(CO ₂ ) _B : Average of the amount of carbon dioxide accumulation from the inoculation vessel (g)

ThCO ₂ : Theoretical amount of carbon dioxide generated by the test substance in the container (g)

As a result, in the process in which cellulose (standard test substance) was 37% decomposed for 18 days, the polymer plastics produced in Examples 1 to 3 decomposed to about 33 to 35%, respectively, The polymer plastics showed about 25 to 28% decomposition and somewhat lower biodegradability. On the other hand, the polymer plastics prepared in Comparative Examples 1 and 2 were decomposed by about 22 to 23%, respectively, showing lower biodegradability.

<1-2> Maximum bending load test

The maximum flexural load (unit N) of the prepared polymer pellets was measured.

Flexural loads were measured according to the American Society for Testing and Materials (ASTM) method.

As a result, the polymer plastics produced in Examples 1 to 3 exhibited a maximum flexural load of about 895 to 910 N, respectively, and the polymer plastics produced in Examples 4 to 5 showed about 805 to 815 N, respectively , And the polymer plastics prepared in Comparative Examples 1 and 2 exhibited about 765 to 775 N, respectively.

Claims (17)

A mineral base powder containing fullerene, a neck base powder containing phytoncide, and a natural resin derived from sugarcane,
here,
15 to 30 parts by weight of a mineral base powder, 10 to 20 parts by weight of a neck base powder, 50 to 70 parts by weight of a natural resin derived from cane sugar and 1 to 10 parts by weight of an additive,
The additive is any one or two or more selected from the group consisting of a compatibilizing agent, a lubricant, a biodegradation agent and a bleaching agent,
Wherein the medical container is any one selected from the group consisting of a drug pack, a culture container, a test tube, a syringe, and a drug container.
Medical container made of biodegradable polymer plastic.
delete The method according to claim 1,
Wherein the mineral-based powder containing fullerene is a mineral-based powder comprising one kind or a mixture of two or more kinds selected from the group consisting of buckminster fullerene (C ₆₀ ) and its variants C ₇₀ to C ₅₄₀ Vessel.
The method according to claim 1,
Wherein the phytoncide-containing tree-base powder is a powder obtained by disintegrating one or more kinds selected from the group consisting of pine, fir, coniferous tree, cedar, Japanese white lime, and plain tree.
delete The method according to claim 1,
Wherein the compatibilizer is any one or a mixture of two or more selected from the group consisting of glycidyl methacrylate, ethylene vinyl alcohol, polyvinyl alcohol, and ethylene vinyl acetate.
The method according to claim 1,
Wherein said lubricant is any one or a mixture of two or more selected from the group consisting of stearate, palmitate and laurate.
The method according to claim 1,
Wherein the biodegradation agent is any one or a mixture of two or more selected from the group consisting of iron, zinc, manganese, and titanium.
The method according to claim 1,
Wherein the bleaching agent is any one or a mixture of two or more selected from the group consisting of sulfuric acid bleaching agent, sodium chlorite, and hydrogen peroxide.
The method according to claim 1,
Further comprising an antimicrobial component.
11. The method of claim 10,
Wherein the antimicrobial component is selected from the group consisting of silver (Ag), silver nitrate, calcium phosphate substituted with silver ion, chitosan, shell, gelatin, ceratite, diatomaceous earth, clay, clay, acantoic acid, hinokitiol, zinc oxide, zeolite, Wherein the pharmaceutical composition is any one or a mixture of two or more selected from the group consisting of calcium, benomyl, nisin, organic acids such as propionate, benzoate and sorbate. Vessel.
delete i) Mixing a mineral base powder containing fullerene, a neck base powder containing phytoncide, and a natural resin derived from sugarcane,
Mixing 15 to 30 parts by weight of the mineral powder, 10 to 20 parts by weight of the neck base powder and 50 to 70 parts by weight of the natural resin derived from sugar cane with respect to 100 parts by weight of the whole plastic;
ii) adding a compatibilizing agent, a lubricant, a biodegradation agent and a bleaching agent to the mixture of step i)
Adding 1 to 10 parts by weight of the compatibilizing agent, the lubricant, the biodegradation agent and the bleaching agent to 100 parts by weight of the whole plastic;
iii) extruding the mixture of step ii) at a high temperature and then dry-cooling the mixture; And
iv) molding the extrudate of step iii)
here
Wherein the medical container is any one selected from the group consisting of a drug pack, a culture container, a test tube, a syringe, and a drug container.
A method of manufacturing a medical container comprising a biodegradable polymeric plastic.
14. The method of claim 13,
A method for manufacturing a medical container comprising the biodegradable polymer plastic characterized in that an antibacterial component is further added in the step i) or ii).
15. The method of claim 14,
Wherein the antimicrobial component is selected from the group consisting of silver (Ag), silver nitrate, calcium phosphate substituted with silver ion, chitosan, shell, gelatin, ceratite, diatomaceous earth, clay, clay, acantoic acid, hinokitiol, zinc oxide, zeolite, Wherein the biodegradation is one or a mixture of two or more selected from the group consisting of calcium, benomyl, nisin, organic acids such as propionate, benzoate and sorbate. A method of manufacturing a medical container comprising a polymeric plastic.
14. The method of claim 13,
Wherein said step (i) and (ii) are carried out at a high temperature at a temperature of 70 to 100 ° C.
delete

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