Gel permeation chromatography of nylon 12

Successful chromatograms were obtained for trifluoroacetylated nylon 12 (N‐TFA‐N) in gel permeation chromatography (GPC) with dichloromethane as eluent. It was confirmed that the method of universal calibration was applicable for N‐TFA‐N and polystyrene. The average molecular weights of nylon 12 were obtained from the chromatogram of N‐TFA‐N by use of the calibration curve for polystyrene. The stability of N‐TFA‐N in solution was examined from various angles. Satisfactory results are obtained, if the sample solution is measured within 48 h after preparation.

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“…The value of Dg for each fraction was calculated using the estimated calibration curve, and Mo was obtained from eq. (1).…”

Section: Experimental Polymermentioning

confidence: 99%

Gel permeation chromatography of polyamide by N‐trifluoroacetylation

Ogawa

Sakai

1988

J. Polym. Sci. A Polym. Chem.

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“…SEC for PET has been carried out using chloroform/HFIP (98/2) [3,4], HFIP [5], and dichloromethane/HFIP (95/5) containing tetraethylammonium chloride [6]. Similarly, polyamides has been analyzed using various mobile phases such as toluene/HFIP (8/2) [7], HFIP containing sodium trifluoroacetate [8,9], or tetraethylammonium nitrate [10]. However, not only HFIP but also the chlorocarbons for HFIP dilution are undesirable for safety and environmental reasons.…”

Section: Introductionmentioning

confidence: 99%

Dichloropentafluoropropanes as solvents for size exclusion chromatography

Isemura¹,

Kakita²,

Kawahara³

2004

Journal of Chromatography A

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Preparative fractionation of nylon 12 by column elution method and gel permeation chromatography

Ogawa

Sakai

1985

J. Polym. Sci. Polym. Chem. Ed.

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Nylon 12 has a low melting point compared with other commercial products like nylons 6 and 66. Nylon 12 was fractionated by the column elution method at 170.8‐C. The same sample was also fractionated by preparative gel permeation chromatography and the molecular weight distribution of the fractions obtained by these methods was similarly determined. The weight‐average molecular weight of the fractions was also found by the light scattering method. Both fractionation methods separate the sample according to molecular weight. The former, however, had narrower fractions in molecular weight distribution than the latter and it was easy to obtain a large number of fractions. It was also generally superior in practical use.

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Gel permeation chromatography of nylon 12

Cited by 5 publications

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Gel permeation chromatography of polyamide by N‐trifluoroacetylation

Gel permeation chromatography of polyamide by N‐trifluoroacetylation

Dichloropentafluoropropanes as solvents for size exclusion chromatography

Preparative fractionation of nylon 12 by column elution method and gel permeation chromatography

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