SU1679295A1 - Method for determination of distribution of pores on sizes of microfiltration polymer hydrophibic membranes - Google Patents
Method for determination of distribution of pores on sizes of microfiltration polymer hydrophibic membranes Download PDFInfo
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- SU1679295A1 SU1679295A1 SU894766147A SU4766147A SU1679295A1 SU 1679295 A1 SU1679295 A1 SU 1679295A1 SU 894766147 A SU894766147 A SU 894766147A SU 4766147 A SU4766147 A SU 4766147A SU 1679295 A1 SU1679295 A1 SU 1679295A1
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- USSR - Soviet Union
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- pore size
- microfiltration
- distribution
- size distribution
- membranes
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Изобретение относитс к способам определени структуры капилл рно-пористых тел, в частности к способам распределени пор по размерам микрофильтрационных полимерных мембран, и может быть использовано в област х техники, где разрабатываютс , производ тс и примен ютс полимерные мембраны . Цель изобретени - повышение точности измерени . Дл этого в качестве смачивающей жидкости используетс водный раствор сульфонола с концентрацией 0,08-0,2%, а распределение пор по размерам рассчитывают по формуле D, о cos в Pi где DI - распределение пор по размерам; PI - рабочее давление; С- поверхностное нат жение смачивающей жидкости; в- контактный угол смачивани , принимаемый равным 0. (Л СThe invention relates to methods for determining the structure of capillary-porous bodies, in particular, to methods for the distribution of pore size of microfiltration polymer membranes, and can be used in the fields of technology where polymer membranes are developed, manufactured and used. The purpose of the invention is to improve the measurement accuracy. For this, an aqueous solution of sulfonol with a concentration of 0.08-0.2% is used as a wetting fluid, and the pore size distribution is calculated using the formula D, о cos in Pi where DI is the pore size distribution; PI - working pressure; C is the surface tension of the wetting fluid; in - contact wetting angle, taken equal to 0. (Л С
Description
Изобретение относитс к способам определени структуры капилл рно-пористых тел, в частности распределени пор по размерам микрофильтрационных полимерных мембран, и может быть использовано в област х техники, где разрабатываютс , производ тс и примен ютс полимерные мембраны.The invention relates to methods for determining the structure of capillary-porous bodies, in particular the pore size distribution of microfiltration polymeric membranes, and can be used in the fields of technology where polymeric membranes are developed, manufactured and used.
Цель изобретени - повышение точности измерени распределени пор по размерам микрофильтрационных полимерных гидрофильных мембран.The purpose of the invention is to improve the accuracy of measuring the pore size distribution of microfiltration polymer hydrophilic membranes.
Пример. Образец мембраны на основе полиамида 66 с размером пор 0,2 мкм и диаметром 47 мм закрепл ют в корпусе фильтродержател , заливают в фильтродер- жатель 50 мл свежеприготовленного водного раствора сульфонола с концентрацией 0,08% и провод т фильтрацию при (20+ 1)°С и давлении 0,3 бар. Затем постепенно повышают давление PI и с помощью расходомера измер ют скорость воздушного потока на выходной стороне влажной мембраны Vei. По достижении соотношением VWpi посто нного значени (,5 бар) начинают уменьшать давление и измер ют скорость воздушного потока через сухую мембрану Vci. На основании полученных значений Уы и Vci стро т зависимость Vi f(Pi) и по уравнению Example. A sample of a membrane based on polyamide 66 with a pore size of 0.2 µm and a diameter of 47 mm is fixed in the housing of the filter holder, poured into the filter holder 50 ml of freshly prepared aqueous solution of sulfonol with a concentration of 0.08% and filtering is carried out at (20+ 1) ° C and a pressure of 0.3 bar. Then, the pressure PI is gradually increased and the air flow rate on the outlet side of the wet Vei membrane is measured using a flow meter. When the VWpi ratio reaches a constant value (, 5 bar), the pressure begins to decrease and the air flow rate through the dry Vci membrane is measured. Based on the obtained values of Vy and Vci, the dependence Vi f (Pi) is constructed and according to the equation
PiPi
рассчитывают расоcalculate raso
Х|X |
Ч)H)
N3 Ч СПN3 H SP
пределение пор по размерамpore size
DI (а 34,4 10 3 Н/м, где а - поверхностное нат жение смачивающей жидкости).DI (a 34.4 10 3 N / m, where a is the surface tension of the wetting fluid).
Искомые значени диаметров пор испытуемой мембраны составл ют Омакс - 0,34 мкм и DCp 0,22 мкм.The required pore diameters of the test membrane are Omax - 0.34 µm and DCp 0.22 µm.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894766147A SU1679295A1 (en) | 1989-12-08 | 1989-12-08 | Method for determination of distribution of pores on sizes of microfiltration polymer hydrophibic membranes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894766147A SU1679295A1 (en) | 1989-12-08 | 1989-12-08 | Method for determination of distribution of pores on sizes of microfiltration polymer hydrophibic membranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1679295A1 true SU1679295A1 (en) | 1991-09-23 |
Family
ID=21483160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894766147A SU1679295A1 (en) | 1989-12-08 | 1989-12-08 | Method for determination of distribution of pores on sizes of microfiltration polymer hydrophibic membranes |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1679295A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282380A (en) * | 1992-06-30 | 1994-02-01 | Millipore Corporation | Integrity test for membranes |
-
1989
- 1989-12-08 SU SU894766147A patent/SU1679295A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Брок Т. Мембранна фильтраци .-М.: Мир, 1987, с. 464. Biswas S. and ather. Comparison of measurement methods for pore size evaluation of nonwoven filter media. Transaction of the American society of Mechanical Engineer. - J.Energy Resour, Technol., 1988. v.116, № 1. p.23-26. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282380A (en) * | 1992-06-30 | 1994-02-01 | Millipore Corporation | Integrity test for membranes |
| US5457986A (en) * | 1992-06-30 | 1995-10-17 | Millipore Corporation | Process for evaluating solute retention characteristics of membranes |
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