Bestimmung von morphologischen Eigenschaften quellbarer Festkörper durch Ausschluß‐Chromatographie

Halász, I.; Vogtel, Peter

doi:10.1002/ange.19800920106

Cited by 19 publications

(1 citation statement)

References 9 publications

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“…With classical methods, such as adsorption of gases or mercury porosimetry, the portion of pores created by swelling cannot be determined. 6 Using the size-exclusion method, the changes in structure caused by crosslinking with f~rmaldehyde~-~ and by merceri~ation~? lo were investigated; the exclusion limits and internal solvent volumina were only determined by extreme extrapolation of the measured curves.…”

Section: Introductionmentioning

confidence: 99%

HPLC determination of the pore distribution and chromatographic properties of cellulosic textile materials

Grünwald

Burtscher

Bobleter

1990

J of Applied Polymer Sci

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SynopsisHPLC columns packed with cellulosic textile materials as stationary phase were examined with respect to their chromatographic parameters. The interaction of the stationary phase with water-soluble substances (mainly textile chemicals) was also studied. The size-exclusion effects of the porous material were measured for molecules with M W 20-2 X lo6, thus giving further information concerning structural changes during the pretreatment of textile materials. Electrostatic and sorptive interactions were detected simultaneously, but found to exert a minor influence. Using a recently developed mathematical model, the pore volume distribution of swollen celluose could be determined from the size-exclusion data without the introduction of empirical factors. The applied HPLC method of characterizing cellulosic materials offers an alternative to the previously utilized static and chromatographic methods, especially for studies on pretreated textile materials.

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Section: Introductionmentioning

confidence: 99%

HPLC determination of the pore distribution and chromatographic properties of cellulosic textile materials

Grünwald

Burtscher

Bobleter

1990

J of Applied Polymer Sci

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Faserstruktur und Färbeeigenschaften von Cellulosefasern, 1. Zusammenhänge zwischen Veränderungen der Faserstruktur und der Farbstoffadsorption bei Baumwolle durch Mercerisation und Flüssigammoniak‐Behandlungen

Bredereck

Saafan

1981

Angew. Makromol. Chem.

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Porosity determination of poly(trimethylolpropane trimethacrylate) gels

Schmid¹,

Kulin²,

Flodin³

1991

Makromol. Chem.

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Trimethylolpropane trimethacrylate (TRIM) was suspension-polymerized with toluene as poreforming agent. The concentration of the monomer (TRIM) in the porogen was varied between 20 and 50 v01.-' 4' 0 of the organic phase. The poly(TR1M) particles had narrow particle-size distributions. The porosity of the dry gels was studied with scanning electron microscopy, nitrogen adsorption/desorption and mercury porosimetry. All gels had bimodal pore-size distributions.The size distribution of large pores (r > 50 A) of solvent free poly(TR1M) broadened when the amount of TRIM was decreased. The pore-size distributions of the swollen poly(TR1M) gel particles were calculated from size-exclusion chromatography (SEC) results. The separation range for poly(TR1M) particles of polystyrene standards varied with the monomer concentration. A relationship between the pore-size distributions of dry poly(TR1M) gels and those of swollen gels is proposed. Whether or not the structure of poly(TR1M) gels could be described as fractals is discussed. 100 (V(swo1len gel) -V(dry gel) S = gel) CCC 0025-1 16X/91/$03.00 0 1991, Hiithig & Wepf Verlag, Basel 1224 A. Schmid, L.4. Kulin, P. Flodin P A K D Partition coefficient Skeletal density of the dry polymer Area beneath the differential pore-size distribution curve, proportional to the percentage of the total separating volume vR -vR2700000 vR 250 -vR 2700000 K D = R S P Specific resolution R ,Resolution of two peaks HETP Height equivalent to a theoretical plate *) Systematic IUPAC nomenclature: 2-Ethyl-2-hydroxymethyl-1,3-propanediol.

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Bestimmung von morphologischen Eigenschaften quellbarer Festkörper durch Ausschluß‐Chromatographie

Cited by 19 publications

References 9 publications

HPLC determination of the pore distribution and chromatographic properties of cellulosic textile materials

HPLC determination of the pore distribution and chromatographic properties of cellulosic textile materials

Faserstruktur und Färbeeigenschaften von Cellulosefasern, 1. Zusammenhänge zwischen Veränderungen der Faserstruktur und der Farbstoffadsorption bei Baumwolle durch Mercerisation und Flüssigammoniak‐Behandlungen

Porosity determination of poly(trimethylolpropane trimethacrylate) gels

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