Apparatus for measuring biodegradability of sample using non-dispersive infrared spectrometry and method of measuring the same
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A biodegradation, sample technology, applied in color/spectral property measurement, measurement device, biochemical cleaning device, etc., can solve the problems of difficult quantitative measurement and real-time monitoring, low repeatability of results, and long time.
Inactive Publication Date: 2005-10-26
REPUBLIC OF KOREAAGENCY FOR TECH & STANDARDS MOCIE
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[0012] However, as for the above methods, the measured results depend on the technique of each experimenter, thus rendering these results low in reproducibility
In addition, because these experiments are performed manually, the time required for the experiments is long, making it difficult to quantitatively measure and monitor in real time
Method used
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example 1
[0076] Compression pump (coolant pump, YUILAIR INSTRUMENT, Korea), needle valve (air controller, SANYANG AUTO NSTRUMENT, Korea), flow meter (mass flow meter, KOFLOC, Japan), pressure gauge (pressure gauge, SHINYANG AUTO NSTRUMENT, Korea ) and check valves as per figure 2 The sequence shown is connected, after which 3 vessels containing 10N NaOH aqueous solution and equipped with stirrers are connected to each other behind the check valve.
[0077] Subsequently, a filter (chemical deodorization filter, Joul Heater Co. Ltd., Korea) was attached behind the last container filled with 10N NaOH aqueous solution, and a cooling device (bath circulator, JEIO TECH, Korea) was installed to Behind this filter (chemical deodorization filter, Joul Heater Co. Ltd., Korea).
[0078] Two 50L compost containers were connected to the cooling device (bath circulator, JEIO TECH, Korea), one of which was filled with 200 g of compost containing seed compost and 3.5 g of cellulose (SIGMACELL type 2...
example 2
[0085] This example was carried out in the same manner as in Example 1 above, except that PBAT DSE (Ire Chemical Co., Ltd., Korea) was used instead of cellulose (SIGMACELL type 20, SIGMA, USA).
[0086] The results are shown in Table 1 and attached Figure 5 middle.
example 3
[0088] This example was carried out in the same manner as in Example 1 above, except that PBAT MSA (Ire Chemical Co., Ltd., Korea) was used instead of cellulose (SIGMACELL type 20, SIGMA, USA).
[0089] The results are shown in Table 1 and attached Figure 5 middle.
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Abstract
Disclosed is an apparatus for measuring biodegradability of a polymer sample by non-dispersive infrared spectrometry, including a compression pump ( 2 ), a first air controlling unit ( 4 ), carbon dioxide removing devices ( 6 ), a filter ( 8 ), a first cooling device ( 10 ), at least two composting vessels ( 12 ), at least two second cooling devices ( 10 '), at least two second air controlling units ( 14 ), at least two non-dispersive infrared gas analyzers 16 and collection units ( 18 ), connected in order, and a computer ( 34 ) connected to the first air controlling unit, the second air controlling units and the gas analyzers. Using the current apparatus, the amount of carbon dioxide is rapidly, quantitatively and reproducibly measured, and the apparatus is thus used for research and development procedures of biodegradable polymers.
Description
technical field [0001] The present invention relates to devices and methods for measuring the biodegradability of polymers under controlled composting conditions. More particularly, the present invention relates to a device for measuring the biodegradability of a polymer and a method for measuring the biodegradability, which have the advantage of rapidly and quantitatively measuring carbon dioxide emitted from a compost container containing a polymer by non-dispersive infrared spectroscopy amount. Background technique [0002] Generally, the term "biodegradability" means that a specific compound is completely broken down into simple molecules (such as CH by microorganisms and / or under natural environmental conditions). 4 , CO 2 and water) or inorganic salts. Furthermore, the term "degradable polymer" refers to polymeric compounds that are not destroyed by incineration but by simple burial of compounds used in molded articles, packaging materials, hygiene products, agricul...
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