KR101170932B1 - Adulterated gasoline detecting method using polymer sensor fibers including polydiacetylene, and device including the polymer sensor fibers - Google Patents
Adulterated gasoline detecting method using polymer sensor fibers including polydiacetylene, and device including the polymer sensor fibers Download PDFInfo
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- KR101170932B1 KR101170932B1 KR20100025578A KR20100025578A KR101170932B1 KR 101170932 B1 KR101170932 B1 KR 101170932B1 KR 20100025578 A KR20100025578 A KR 20100025578A KR 20100025578 A KR20100025578 A KR 20100025578A KR 101170932 B1 KR101170932 B1 KR 101170932B1
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Abstract
The present invention relates to a pseudo-petrol detection method and detection apparatus using a polymer sensor fiber containing polydiacetylene.
More specifically, in the present invention, when toluene, which is a specific component of pseudo-petroleum, touches the polymer sensor fiber containing polydiacetylene, the color of the sensor fiber is decreased by dissolving the external matrix polymer and reacting with the polydiacetylene inside. The present invention relates to a method of determining whether or not pseudo gasoline is visually changed by changing from blue to red.
Description
The present invention relates to a novel use of a polymer sensor fiber having a polydiacetylene structure in a polyacrylic acid matrix for pseudo-petrol detection and a detection device using the same. In addition, the present invention relates to a pseudo-petrol detection method using a polymer sensor fiber containing polydiacetylene accompanying a color and fluorescence change by recognizing a change in the external environment, and a detection device using the same.
'Pseudo gasoline' is a term that is distinguished from genuine gasoline, and means that it is manufactured for the purpose of using it as a fuel for a vehicle or a machine by mixing petroleum products with other additives, a coagulant, or any chemical substance. , Including those used in the market such as 'petroleum similar' and 'fake gasoline'.
Such gasoline has greatly increased its production and distribution since the 1997 financial crisis, due to fluctuations in oil prices and traffic tax hikes. Due to oil surges and rising oil prices, the production and sales of quasi-petrol are still open.
According to the Korea Petroleum Quality Management Institute, the method of producing pseudo gasoline has been shifted from mixing petrochemicals with petrochemicals to mixing only petrochemicals.
The pseudo gasoline currently on the market is generally manufactured by mixing foreign substances with genuine gasoline, or by mixing thinner, organic solvent, alcohol, toluene, etc. in an appropriate ratio without using genuine gasoline.
Some of the pseudo gasoline are currently sold under the name of fuel additives. Based on indirect estimates based on sales trends of solvents, which are mainly used for the manufacture of quasi-petrol, about 6.7 million barrels of similar petroleum products are distributed a year, which is estimated to account for 11% of total gasoline consumption. do.
Quasi-petrol reduces fuel consumption by about 7% and fuel consumption by about 18%, but it usually shortens the engine life and produces about 62% more aldehydes, which are carcinogens compared to genuine gasoline, and emits large amounts of environmental pollutants while driving. There is this.
The government strictly limits the methanol content of genuine gasoline to less than 0.1%. Methanol is a dangerous substance that is fatal and explosive to the human body when converted into formaldehyde in the liver when absorbed in the human body.
However, pseudo gasoline contains methanol at least 5% and up to 75%, which causes dizziness, vomiting and paralysis in the human body and corrosion of the vehicle fuel system in the vehicle, causing engine failure.
In addition, there is a problem in that, due to the handling of pseudo gasoline in residential areas, fire and explosion accidents may occur, resulting in the loss of life.
Despite the problems of pseudo-petrol, it is known in the oil refining industry that it is manufactured and marketed by mixing thinner, organic solvent, alcohol, toluene and the like. In particular, since it is not easy for ordinary consumers to discriminate such gasoline, it has been detected by requesting from national institutions such as the Petroleum Quality Inspection Center when it is suspected of gasoline.
In addition, the determination of similar products is performed in the field directly when analyzed using large expensive equipment such as HPLC-UV spectroscopy, chromatography, and infrared spectrometer. The problem is that it takes a lot of time when sampling or testing.
Therefore, a non-exposure on-site inspection test system vehicle (Korean Patent Publication No. 2007-008962 [Car-mounted fuel inspection device]) was developed that can determine whether there is an abnormality while lubricating at the site by using a vehicle equipped with test equipment. There is a problem that can not be used by the general public.
On the other hand, a simple discriminating device that can determine the specific gravity and vapor pressure of the solvent or toluene component mainly mixed with pseudo gasoline in comparison with the genuine gasoline in order to determine the pseudo gasoline within a short time (Korean Patent Publication No. 1999-0084046 A simple discriminating device of) has been developed.
However, the simple discriminant device is a high-priced product of more than 2 million won, weighs more than 8 kg, and it is difficult to purchase and use by inexperienced general operators because the operation of the device is complicated because it requires chemical reaction of dangerous oxide such as strong acid at high temperature. There is a problem.
Republic of Korea Patent Publication No. 2009-0083552 [Similar Fuel Discrimination Device], Republic of Korea Patent Publication No. 2009-0005850 [Fuel Oil Inspection System and Method for Testing Fuel Oil Using the Same], Republic of Korea Patent Publication No. 2002-0083046 [Optical Fiber Optical Refractometer Similar gasoline discriminator using the same has been developed, but they are also difficult to use by ordinary consumers in the operation and price of the device to determine the similar gasoline through the analysis using the device.
Meanwhile, Korean Patent Publication No. 2001-0069614 [Similar Gasoline Detection Kit] was developed to determine similar gasoline. There is a problem that can cause problems.
In addition, Korean Patent Publication No. 2004-0092388 [Similar Gasoline Detection Device Using Dyes] was developed, but after the genuine gasoline and pseudo gasoline flowed to the strip sensor, it is necessary to wait for more than a few minutes to see the result. It is difficult to distinguish whether or not the original color of the dye is light, and there is a problem that it is difficult to distinguish the naked eye due to the slight color change.
In order to solve this problem, the inventors of the present invention while studying a method for detecting pseudo-petrol in an easy and safe manner, the composition containing the poly acetylene containing toluene through the color change and fluorescence change properties to toluene It has been found that the similar gasoline can be detected, thus completing the present invention.
An object of the present invention is to provide a method and a detection apparatus using the same that can easily detect pseudo-petrol by the naked eye by detecting the color change and fluorescence change by reacting with the components contained in the pseudo-petrol.
Another object of the present invention is to provide a method and a detection device using the same that can detect a similar gasoline stable and easy to the general public.
Still another object of the present invention is to provide a more competitive detection method and detection apparatus by detecting pseudo gasoline in the shortest time (within 3 seconds) even with a minimum amount of sensor fibers and gasoline in the field.
In particular, the present invention is to provide a method for determining whether or not pseudo-petroleum by the color change and fluorescence change according to the conventional quasi-petroleum containing the toluene and methanol at the same time.
In order to achieve the above object, the present invention provides a pseudo-petrol detection method and detection apparatus using a polymer sensor fiber having a structure containing a polydiacetylene in a polyacrylic acid matrix. In the present invention, the polymer sensor fiber may be represented by a structure in which polyacrylic acid coats and surrounds polydiacetylene.
The mechanism by which the polymer sensor fiber according to the present invention detects pseudo gasoline is as follows.
The polyacrylic acid in the polymer sensor fiber according to the present invention is dissolved in the polyacrylic acid matrix when the alcohol is in contact with the component of the pseudo-petrol. When the polyacrylic acid matrix is dissolved, toluene contained in the pseudopetrol reacts with the polydiacetylene to cause the color change of the polymer sensor fiber from blue to red.
The polymer sensor fiber according to the present invention utilizes the properties of commercially available pseudo gasoline in which alcohol and toluene are present together, and is characterized in that color change cannot be detected unless the alcohol and toluene act simultaneously.
The mechanism of the pseudo gasoline detection method of the present invention is shown schematically in FIG. 1.
Figure 1 (a) shows the structure of a polymer sensor fiber containing polydiacetylene prepared according to the present invention. When the pseudo-petroleum oil made by mixing toluene, methanol, and thinner is applied thereto, the process of breaking external polyacrylic acid matrix bond and reacting with the polydiacetylene inside to change the color is shown in FIG. As shown.
Thereby, the pseudo gasoline containing alcohol (methanol) and toluene can be detected simultaneously.
Method for producing a polymer sensor fiber according to the present invention,
(Iii) dissolving a polyacetylic acid used as a diacetylene monomer having a structure of
(Ii) electrospinning the solution obtained in step (i) to produce ultrafine fibers containing diacetylene; And
(Iii) exposing the manufactured ultrafine fibers to ultraviolet rays.
[Formula 1]
In Chemical Formula 1,
d + g is 0,1 or 2, e + f is an integer from 2 to 50, e and f are integers greater than 1,
A and B are methyl group, amine group, carboxyl group, hydroxy group, maleimide group, biotin group, N-hydroxysuccinimide group, benzoic acid group or activated ester group,
L 1 and L 2 are the same as or different from each other and are an alkyl group having 2 or more carbon atoms, at least one ethylene oxide group, an amine group, an amide group, an ester group or a carbonyl group.
The polymer sensor fiber according to the present invention may be prepared by electrospinning a polymer solution composed of a diacetylene monomer represented by Formula 1 and a matrix polymer, an organic solvent capable of dissolving the diacetylene monomer and the matrix polymer.
The diacetylene monomer used in step (i) is 10,12-pentacosadiynoic acid (PCDA) represented by the following Chemical Formula 2, 8,10-heneicosadino represented by the following Chemical Formula 3 Ikic acid (8,10-heneicosadiynoic acid, HCDA), 10,12-tricosadinoic acid (10,12-tricosadiynoic acid, TCDA) represented by the following formula (4), the following may be used alone or in combination.
[Formula 2]
CH 3- (CH 2 ) 11 -C≡CC≡C- (CH 2 ) 8 -COOH
(3)
CH 3- (CH 2 ) 9 -C≡CC≡C- (CH 2 ) 6 -COOH
[Formula 4]
CH 3- (CH 2 ) 9 -C≡CC≡C- (CH 2 ) 8 -COOH
The organic solvent used in the preparation method is not particularly limited, but may dissolve the polymer and the diacetylene monomer, and may be chloroform, dichloromethane, dimethylformamide, tetrahydrofuran ( It is preferable to use tetrahydrofuran, acetone, alcohol and the like.
More specifically, a method for producing a polymer sensor fiber containing polydiacetylene in a polyacrylic acid matrix according to the present invention will be described below.
First, the first mixture is prepared by dissolving polyacrylic acid and the diacetylene monomer represented by
In the present invention, the diacetylene monomer may be used as the diacetylene monomer, and 10,12-pentacosadinoic acid (PCDA) and 8,10-heneicosadinoic acid (HCDA) represented by
As the organic solvent that can be used in the present invention, as described above, chloroform, chloroform, dichloromethane, dimethylformamide, di-metylformamide, tetrahydrofuran, acetone, acetone, etc. And it can be used without limitation as long as it can dissolve the diacetylene monomer, it is preferable to use chloroform.
The obtained first mixture can be produced ultrafine fibers containing diacetylene through the electrospinning method.
The ultrafine fibers containing the diacetylene conjugated polymer prepared by the electrospinning may be obtained until separated into a nonwoven fabric and separated from the collector.
Next, the ultrafine fibers containing the diacetylene conjugated polymer may be irradiated with ultraviolet rays of 254 nm to 360 nm for 1 to 30 minutes to prepare polydiacetylene-containing ultrafine fibers.
On the other hand, the method of detecting whether or not pseudo gasoline through the color change of the polymer sensor fiber
(Iii) fixing the polymer sensor fiber containing polydiacetylene onto a solid support;
(Ii) dropping the detection material on the polymer sensor fibers on the solid phase support;
(Iii) monitoring the color change caused by the reaction of the dropped detection material with the polymer sensor fibers on the support of the solid phase.
The present invention provides a pseudo gasoline detecting device comprising a polymer sensor fiber containing polydiacetylene in a polyacrylic acid matrix. The type of the device may be a simple kit, but is not limited thereto. Any device capable of detecting pseudo-petroleum using a polydiacetylene-containing polymer sensor fiber may be applied regardless of the type.
The
The
The present invention has the effect of detecting pseudo-petrol by detecting alcohol and toluene in pseudo-petroleum using polymer sensor fiber containing polyacetylene in the polyacrylic acid matrix.
In addition, the present invention can detect the similar gasoline easily and easily for the general public, and can detect the similar gasoline within the shortest time (within 3 seconds) with only a small amount of sensor fibers and gasoline in the field to provide a more competitive detection method. Has the effect to provide.
1 is a schematic diagram showing a process of color change by toluene and alcohol of a polymer sensor fiber containing polydiacetylene in a polyacrylic acid matrix.
Figure 2 is a photograph showing the color change after applying the genuine gasoline (A) and pseudo gasoline (B) to the sensor fiber produced in Example 1.
Figure 3 shows a SEM photograph when the thinner (B), toluene (C) and methanol (D) is applied to the polymer sensor fiber (A) according to the present invention.
Figure 4 is a photograph showing the color change by applying (a) genuine gasoline (b) methanol (c) enamel thinner (d) toluene to the polydiacetylene-containing polymer sensor fiber prepared in Example 1.
FIG. 5 is a photograph showing color change by mixing and applying enamel thinner, toluene and methanol in various ratios (enamel thinner: toluene: methanol ratio) to the polydiacetylene-containing polymer sensor fiber prepared in Example 1. FIG.
6 is a photograph showing a color change by applying a mixture of genuine gasoline and toluene in various ratios (general gasoline: methanol) to the polydiacetylene-containing sensor fiber prepared in Example 1. It can be seen that the color changes in proportion to the toluene ratio.
7 is a view showing the configuration of a diagnostic kit which is an example of the pseudo gasoline detecting device according to the present invention.
Hereinafter, preferred examples are provided to aid the understanding of the present invention, but the following examples are merely for exemplifying the present invention, and various changes and modifications within the scope and spirit of the present invention will be apparent to those skilled in the art. It is natural that modifications and variations fall within the scope of the appended claims.
Example
Example One: Polyacrylic acid In matrix Polydiacetylene Preparation of Containing Sensor Fibers
20 wt% polyacrylic acid (PAA) was dissolved based on 2 wt% PCDA (10,12-pentacosadiynoic acid) based on polyacrylic acid polymer solution and chloroform solvent weight. This mixed solution was prepared by using an electrospinning device to produce a polymer polymer fiber containing diacetylene (ultrafine fiber). The prepared ultrafine fiber was exposed to ultraviolet rays at 254 nm for 20 minutes (1 mW / cm 2) to obtain a polymer sensor fiber containing blue polydiacetylene.
Test Example 1: Color change according to the application of pseudo gasoline
The color change was observed by applying a genuine gasoline or pseudo gasoline to the polydiacetylene-containing polyacrylic acid sensor fiber (ultrafine fiber) prepared in Example 1 (dropping). FIG. 2 is a photograph showing the color change after applying genuine gasoline (A) and pseudo gasoline (B) to the polydiacetylene-containing polymer sensor fiber prepared according to Example 1. FIG. Pseudo gasoline was prepared by mixing toluene, methanol and thinner in a known manner.
As a result, the color change from blue did not occur when applied to genuine gasoline, and the color change from blue to red when applied to pseudo gasoline. As a result, the sensor fiber according to the present invention was able to distinguish the genuine gasoline and the pseudo gasoline to recognize the color change clearly with the naked eye.
Test Example 2: color change by application of pseudo-petrol components
The color change was observed by applying genuine gasoline, enamel thinner, methanol, and toluene to the polydiacetylene-containing sensor fiber (ultrafine fiber) prepared in Example 1, and to determine which of the components caused the color change. Confirmed.
SEM images of the fiber structure after applying the enamel thinner (B), toluene (C) and methanol (D) to the fiber sensor (A) prepared in Figure 3, respectively. After the application of methanol (D) it can be seen that the polyacrylic acid matrix is dissolved.
Figure 4 shows the color change after applying (a) genuine gasoline (b) enamel thinner (c) methanol (d) toluene. As a result, it can be seen that the color change is not induced by the enamel thinner and toluene, which are known as pseudo-petroleum components, and the color is slightly changed by methanol in the pseudo-petroleum components. That is, it was confirmed that pseudo gasoline containing a methanol component can be detected.
Test Example 3: Color change according to the content of pseudo gasoline
The color change was observed after application to the polydiacetylene-containing sensor fiber (ultrafine fiber) prepared in Example 1 by adjusting the content of the component of pseudo-petrol.
Figure 5 shows the color change after applying different enamel thinner: toluene: methanol ratio, respectively. As confirmed in Test Example 2, it was confirmed that when methanol or toluene was contained, the sensor fiber which was blue was reddened, and in particular, the higher the toluene content was, the easier it became to be identified by the naked eye. When methanol and toluene are included together, it is confirmed that the red color is different although it is different depending on the ratio.
Test Example 4: Color change of pseudo-petrol with methanol added to genuine gasoline
The color change was observed by applying a mixture of genuine gasoline and methanol at various ratios to the polydiacetylene-containing sensor fiber (ultrafine fiber) prepared in Example 1. Figure 5 shows the result of applying after mixing the genuine gasoline: toluene ratio 10: 0 ~ 0:10.
The color began to change when the methanol content was more than 10%, and the color became red until 80% was contained, and black when the content of genuine gasoline was less than 10% when the content was over 10%. Genuine gasoline contains some toluene, so when methanol breaks the matrix bond sufficiently, the toluene in the gasoline reacts with the polydiacetylene of the sensor fiber and becomes red. However, in the absence of methanol, color change did not occur because toluene did not play a role of breaking the polymerization bond, and in the case of only methanol and no toluene (zero gasoline content), the sensor fiber was black.
Through this, it can be seen that the pseudo gasoline detection method according to the present invention can detect pseudo gasoline that is prepared by mixing methanol with genuine gasoline.
Claims (7)
(Iii) immobilizing the polydiacetylene-containing polymer sensor fiber on the solid phase support;
(Ii) dropping the detection material on the polymer sensor fibers on the solid phase support;
(Iii) observing the color change of the polymer sensor fiber on the support of the solid phase.
And wherein said polymer sensor fibers have a structure in which polyacrylic acid covers and surrounds polydiacetylene.
The reagent pad unit pseudo-petrol detection kit, characterized in that the polymer sensor fibers of the structure containing the poly acetylene contained in the polyacrylic acid matrix.
The reagent gasoline detection kit, characterized in that the one-piece integral with the reagent pad unit.
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| KR20150057511A (en) | 2013-11-19 | 2015-05-28 | 한국전자통신연구원 | Optical-circuit type device for detecting reformulated fuel and method for manufacturing sensor element thereof |
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| KR100779986B1 (en) | 2006-12-30 | 2007-11-28 | 한양대학교 산학협력단 | Pr°cess for preparing polydiacetylene-embedded micro/nano fibers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100779986B1 (en) | 2006-12-30 | 2007-11-28 | 한양대학교 산학협력단 | Pr°cess for preparing polydiacetylene-embedded micro/nano fibers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150057511A (en) | 2013-11-19 | 2015-05-28 | 한국전자통신연구원 | Optical-circuit type device for detecting reformulated fuel and method for manufacturing sensor element thereof |
| US9335314B2 (en) | 2013-11-19 | 2016-05-10 | Electronics And Telecommunications Research Institute | Optical circuit-type reformulated fuel detecting sensor device and method for manufacturing sensor element thereof |
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