CN102393441B - Super absorbent polymer and measuring method of super absorbent polymer in hygienic product - Google Patents
Super absorbent polymer and measuring method of super absorbent polymer in hygienic product Download PDFInfo
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- CN102393441B CN102393441B CN201110359758.0A CN201110359758A CN102393441B CN 102393441 B CN102393441 B CN 102393441B CN 201110359758 A CN201110359758 A CN 201110359758A CN 102393441 B CN102393441 B CN 102393441B
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- super absorbent
- absorbent resin
- absorbent polymer
- magnesium ion
- amenities
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Abstract
The invention discloses a super absorbent polymer and a measuring method of the super absorbent polymer in a hygienic product. The technical scheme is as follows: utilizing inorganic salt ion Mg2+ and the quantitative chelation of the super absorbent polymer for soaking a certain quantity of super absorbent polymer in certain concentration and volume of excessive Mg2+ ion signed solution, and stirring so as to conduct complexation reaction on the super absorbent polymer and salt ions in the mixture, and utilizing EDTA (Ethylene Diamine Tetraacetic Acid) back titration method for measuring the chelation coefficient K of the super absorbent polymer; and soaking the hyginenic product to be measured in the certain concentration and volume of the excessive Mg2+ ion solution, and stirring so as to conduct the complexiation reaction on the super absorbent polymer and the Mg2+ ion, and utilizing the EDTA back titration method for indirectly measuring the quantity m of the Mg2+ ion in complexation with the super absorbent polymer, wherein m/k is the content of the super absorbent polymer in the hyginenic product. The method has the advantages of simple operation, objective and real measured data, good repeatability, low cost and easy operation.
Description
Technical field
The invention belongs to method of testing field, particularly a kind of method that can be used for testing content of super water absorbent resin in disposable sanitary articles.
Background technology
In disposable sanitary articles industry, often by the amount of bleeding back of paper diaper or sanitary napkin, weigh the dry and comfortable performance of product.When test is to the abnormal sample of certain a collection of amount of bleeding back, whether be while because this sample macromolecule content abnormal causing bleed back amount abnormal just have certain difficulty, because did and bleed back the sample that measures examination and can not measure the wherein content of high hydroscopic resin (SAP) by traditional sodium ion electrode method with physiological saline if wanting to understand.For addressing this problem, to develop and a kind ofly new can test amenities, the method for testing tool of particularly having done SAP content in the sample that bleeds back performance test has very important significance.
The method of testing of the amenities SAP content that existing industry is more general is to utilize sodium ion electrode to measure the content of sodion in amenities soak solution, calculates the amount of super absorbent resin in amenities by the quantitative relationship between sodium ions content and super absorbent resin content.The method is complex operation not only, and deviation is larger, particularly for used the sample said method of physiological saline test cannot be suitable at all.
Summary of the invention
The object of the present invention is to provide a kind of
the assay method of super absorbent resin content in super absorbent resin and amenities; Its energyovercome the shortcoming of existing method of testing, for a kind of simple to operate, can accurately test amenities, be specially adapted to physiological saline, to test or used amenities in the assay method of super absorbent resin content.
The present invention realizes by the following technical solutions:
(1) high hydroscopic resin that is m by quality immerses in the magnesium ion extract that contains certain volume and concentration, and the magnesium ion quality in magnesium ion extract is m
0, then stir, soak 60～120min, extract the soak solution of certain volume, with the remaining ion of EDTA titration of demarcating, calculating remaining mass of ion is m
1, by the computing formula k=(m of complexing degree
0-m
1)/m calculates the complexing degree k value of high hydroscopic resin to magnesium ion;
(2) amenities that contains high hydroscopic resin is immersed in the magnesium ion extract that contains certain volume and concentration, the magnesium ion quality in this magnesium ion extract is m
2, stir, soak 60～120min.
(3) soak solution of the certain volume after extraction step (2) immersion, the EDTA titration residue magnesium ion with demarcating, calculates remaining magnesium ion quality m
3;
(4) press the computing formula (m of super absorbent resin content
2-m
3)/k, k=(m
0-m
1)/m, calculates super absorbent resin content in amenities.
Advantage of the present invention is: the present invention utilizes inorganic ion Mg
2+with the quantitative chelation of super absorbent resin, a certain amount of super absorbent resin is soaked in to the excessive Mg of finite concentration and volume
2+ion mark solution, stirs, and makes super absorbent resin and salt ion wherein that complex reaction fully occur, and measures the chelating coefficient k of super absorbent resin by EDTA back titration; Amenities to be measured is soaked in to the excessive Mg of finite concentration and volume
2+solion, stirs, and makes super absorbent resin and Mg wherein
2+fully there is complex reaction in ion, with the Mg of EDTA back titration indirect determination and super absorbent resin complexing
2+the amount m of ion, m/k is the content of super absorbent resin in amenities.The method is simple to operate, and the data of test are objective, true, favorable reproducibility; Cost is low, easy operating.Owing to adopting physiological saline test or baby to use, in amenities process, from the external world, introduced inorganic salts sodion, and the accuracy of the existence meeting severe jamming sodium ion electrode method test result of sodion.For these reasons, the invention provides a kind of simple to operate, can accurately test the super absorbent resin content in amenities, be specially adapted to physiological saline, to test or used amenities in the mensuration of super absorbent resin content, when having overcome amenities test performance or usability and extremely need to review wherein content of super water absorbent resin, the difficult problem that cannot use sodium ion electrode method to test, described amenities is sanitary napkin, paper diaper and pet sanitary belt etc.This assay method is fast and convenient, accurate, result favorable reproducibility, and selectivity is high, and strong interference immunity has overcome the problem that sodium ion electrode method is easily disturbed.This method is the difficult problem running in product development and production run for current sanitary goods industry specially and further investigate and develop, and yet there are no relevant documents and materials report.
Embodiment
Below by embodiment, the present invention is described in detail.
Embodiment 1
(1) solution preparation
The concentration of preparation magnesium chloride solution is 0.2mol/L, and concentration of sodium hydroxide solution is 3mol/L, and EDTA solution concentration is 1mol/L.
(2) mensuration of super absorbent resin (SAP) to magnesium ion complexing degree
The quality m that takes super absorbent resin is 1.0g, is soaked in the magnesium chloride solution of 150ml magnesium ion quality m
0for 0.72g, stir it is fully expanded.Standingly treat that macromolecule sinks, and gets supernatant liquor during test.Pipette soak solution 10ml, add water 40ml, sodium hydroxide solution and indicator, immediately with the EDTA titration of demarcating, write down the EDTA volume V of consumption after mixing
1for 60ml, calculate remaining magnesium ion quality m
1for 0.46g.
Complexing degree k equals to soak the amount of magnesium ion in front extract and not by the ratio of the difference of the amount of complexing magnesium ion and super absorbent resin quality, i.e. the computing formula k=(m of complexing degree
0-m
1)/m, calculates complexing degree k=0.26.
(3) content of high hydroscopic resin in test paper urine pants core body
Get 1, paper diaper sample, take in the magnesium chloride solution that core body fully impregnated in 3000ml magnesium ion quality m apart
2for 14.4g, fully stir and allow the complete complexing of ion, shake up, standing, get supernatant liquor as specimen.Pipette soak solution 10ml, add water 40ml, sodium hydroxide solution and indicator, after mixing, immediately with the EDTA titration of having demarcated, the EDTA volume V that writes down consumption is 80ml, calculates remaining magnesium ion quality m
3for 10.1g.
According to the EDTA volume of complexing agent and consumption, in computation paper urine pants, SAP content is 16.6g.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited to this, can carries out various changes to the present invention without departing from the present invention.
Claims (1)
1. one kind
the assay method of super absorbent resin content in super absorbent resin and amenities, its step is as follows:
(1) high hydroscopic resin that is m by quality impregnated in contain certain volume and concentration can with the magnesium ion solution of high hydroscopic resin complexing in, the magnesium ion quality in described magnesium ion solution is m
0, then after stirring, soaking, extract the soak solution of certain volume, with in the EDTA complexing agent titration soak solution of having demarcated not by the remaining magnesium ion quantity of high hydroscopic resin complexing, calculating after immersion is not m by the quality of the magnesium ion of complexing
1, the described complexing agent of having demarcated for can with the complexing agent of magnesium ion complexing;
(2) testing sample that contains high hydroscopic resin be impregnated in the magnesium ion extract that contains certain volume and concentration, the magnesium ion quality in this magnesium ion solution is m
2, the soak solution of the certain volume after extract soaking, with in the complexing agent titration soak solution of demarcating not by the remaining magnesium ion quantity of high hydroscopic resin complexing, calculating after immersion is not m by the quality of the salt ion of complexing
3;
(3) by the computing formula (m of content of super water absorbent resin
2-m
3)/k, k=(m
0-m
1)/m, the content of high hydroscopic resin in calculating testing sample.
2. according to claim 1
the assay method of super absorbent resin content in super absorbent resin and amenities, the volume that it is characterized in that magnesium ion solution used is 3000～5000ml.
3. according to claim 1 and 2
the assay method of super absorbent resin content in super absorbent resin and amenities, the concentration that it is characterized in that magnesium ion solution is 0.2～1.0mol/L.
4. according to claim 1 and 2
the assay method of super absorbent resin content in super absorbent resin and amenities, it is characterized in that the complexing agent of having demarcated is EDTA solution titrant.
5. according to claim 1 and 2
the assay method of super absorbent resin content in super absorbent resin and amenities, it is characterized in that described testing sample is the disposable sanitary articles that contains high hydroscopic resin.
6. according to claim 4
the assay method of super absorbent resin content in super absorbent resin and amenities, the concentration that it is characterized in that titrant is 1.0～1.5mol/L.
7. according to claim 5
the assay method of super absorbent resin content in super absorbent resin and amenities, it is characterized in that disposable sanitary articles is sanitary napkin, paper diaper or pet sanitary belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110359758.0A CN102393441B (en) | 2011-11-15 | 2011-11-15 | Super absorbent polymer and measuring method of super absorbent polymer in hygienic product |
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|---|---|---|---|
| CN201110359758.0A CN102393441B (en) | 2011-11-15 | 2011-11-15 | Super absorbent polymer and measuring method of super absorbent polymer in hygienic product |
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| Publication Number | Publication Date |
|---|---|
| CN102393441A CN102393441A (en) | 2012-03-28 |
| CN102393441B true CN102393441B (en) | 2014-01-22 |
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| CN201110359758.0A Active CN102393441B (en) | 2011-11-15 | 2011-11-15 | Super absorbent polymer and measuring method of super absorbent polymer in hygienic product |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109983332B (en) * | 2016-09-30 | 2021-10-08 | 株式会社日本触媒 | Method for measuring content of water-absorbent resin, and method for producing sanitary material or absorbent article using same |
| CN109724900A (en) * | 2017-10-30 | 2019-05-07 | 山东爸爸的选择健康科技有限公司 | For detecting the device and detection method of the macromolecule distribution that absorbs water in paper diaper |
| IT202000009085A1 (en) * | 2020-04-27 | 2021-10-27 | Fater Spa | PROCEDURE FOR QUANTIFYING THE CONTENT OF SUPER ABSORBENT POLYMERS IN ABSORBENT SANITARY PRODUCTS |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204665A (en) * | 1997-07-03 | 1999-01-13 | 花王株式会社 | Superabsorbent resin composition |
| JP2001194360A (en) * | 2000-01-14 | 2001-07-19 | Nippon Shokubai Co Ltd | Method for measuring content of water-absorbent resin of absorbent |
-
2011
- 2011-11-15 CN CN201110359758.0A patent/CN102393441B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204665A (en) * | 1997-07-03 | 1999-01-13 | 花王株式会社 | Superabsorbent resin composition |
| JP2001194360A (en) * | 2000-01-14 | 2001-07-19 | Nippon Shokubai Co Ltd | Method for measuring content of water-absorbent resin of absorbent |
Non-Patent Citations (4)
| Title |
|---|
| 倪靖滨等.高吸水性树脂在卫生用品上的应用.《化学工程师》.2009,(第04期), |
| 吸水树脂吸附分离研究进展;谢建军等;《高分子通报》;20070915(第09期);第52-58页 * |
| 谢建军等.吸水树脂吸附分离研究进展.《高分子通报》.2007,(第09期), |
| 高吸水性树脂在卫生用品上的应用;倪靖滨等;《化学工程师》;20090425(第04期);第46-48页 * |
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|---|---|
| CN102393441A (en) | 2012-03-28 |
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