PORE-SIZE DISTRIBUTION MEASUREMENTS OF POLY(METHYL METHACRYLATE) HYDROGEL MEMBRANES FOR ARTIFICIAL-KIDNEYS USING DIFFERENTIAL SCANNING CALORIMETRY

被引:30
作者
ISHIKIRIYAMA, K [1 ]
TODOKI, M [1 ]
KOBAYASHI, T [1 ]
TANZAWA, H [1 ]
机构
[1] TORAY INDUSTRIES LTD,OTSU,SHIGA 520,JAPAN
关键词
POLY(METHYL METHACRYLATE); HYDROGEL; ARTIFICIAL KIDNEY; HOLLOW-FIBER MEMBRANE; PORE SIZE DISTRIBUTION; THERMOPOROSIMETRY; DIFFERENTIAL SCANNING CALORIMETRY; PORE WATER; WATER PERMEABILITY; HYDRODYNAMICS;
D O I
10.1006/jcis.1995.1342
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The freezing and melting behavior of water in 15 types of poly (methyl methacrylate) (PMMA) hydrogel-hollow-fiber membranes utilized in artificial kidneys for ordinary hemodialysis, high flux hemodialysis, hemofiltration, and protein permeable hemofiltration, etc., was investigated using a differential scanning calorimeter, The freezing and melting temperatures of freezable water in the PMMA hydrogels were lower than those of bulk water, although the freezable water had almost the same mobility as that of bulk water, indicating that the freezable water was assigned to free water confined in the pores, i.e., freezable pore water, Pore size distribution curves regarding the PMMA membranes were then calculated from the melting endotherms and the freezing exotherms of the pore water via thermoporosimetry. The average pore radii of the membranes were also calculated from the pore size distribution curves, and they were found to be in good theoretical agreement with the average pore radii obtained from the water permeability, The number of pores was also found to correlate with the number obtained from the water permeability. (C) 1995 Academic Press, Inc.
引用
收藏
页码:419 / 428
页数:10
相关论文
共 40 条
[1]  
ANTONIU AA, 1964, J PHYS CHEM-US, V68, P2745
[2]  
BARRALL EM, 1970, THERMAL CHARACTERIZA
[3]   NEW METHOD FOR SIMULTANEOUS DETERMINATION OF SIZE AND SHAPE OF PORES - THERMOPOROMETRY [J].
BRUN, M ;
LALLEMAND, A ;
QUINSON, JF ;
EYRAUD, C .
THERMOCHIMICA ACTA, 1977, 21 (01) :59-88
[4]   DETERMINATION OF AMOUNT OF BOUND WATER WITHIN CELLULOSIC GELS BY NMR-SPECTROSCOPY [J].
CARLES, JE ;
SCALLAN, AM .
JOURNAL OF APPLIED POLYMER SCIENCE, 1973, 17 (06) :1855-1865
[5]   STRUCTURE OF WATER NEAR SOLID INTERFACES [J].
DROSTHANSEN, W .
INDUSTRIAL AND ENGINEERING CHEMISTRY, 1969, 61 (11) :10-+
[6]   FREEZING AND NONFREEZING WATER IN CELLULOSE-ACETATE MEMBRANES [J].
FROMMER, MA ;
LANCET, D .
JOURNAL OF APPLIED POLYMER SCIENCE, 1972, 16 (05) :1295-&
[7]   EFFECT OF RESTRICTED GEOMETRIES ON THE STRUCTURE AND THERMODYNAMIC PROPERTIES OF ICE [J].
HANDA, YP ;
ZAKRZEWSKI, M ;
FAIRBRIDGE, C .
JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (21) :8594-8599
[8]   DIELECTRIC-RELAXATION SPECTRA OF WATER ADSORBED ON LYSOZYME [J].
HARVEY, SC ;
HOEKSTRA, P .
JOURNAL OF PHYSICAL CHEMISTRY, 1972, 76 (21) :2987-&
[9]   Thermal and Nuclear Magnetic Relaxation Studies of Water-Sodium Polystyrene Sulfonate Systems [J].
Hatakeyama, T. ;
Hatakeyama, H. .
POLYMERS FOR ADVANCED TECHNOLOGIES, 1990, 1 (5-6) :305-310
[10]   DETERMINATION OF BOUND WATER-CONTENT IN POLYMERS BY DTA, DSC AND TG [J].
HATAKEYAMA, T ;
NAKAMURA, K ;
HATAKEYAMA, H .
THERMOCHIMICA ACTA, 1988, 123 :153-161