An Agilent Technologies 1260 Infinity II High Temperature GPC System (GPC 220, Agilent Technologies, Inc, Santa Clara, USA) equipped with a refractive index detector was used and operated at 50 °C in m-cresol as eluent. Twenty milligrams of a PEF sample were dissolved in a 20 mL m-cresol solution at 80–120 °C for 0.5–3 hours. Three consecutive PLgel Olexis columns (0.013 Å pore size) and one precolumn were used while applying a flow rate of 0.4 mL·min−1. For the recording and evaluation of the chromatograms, the GPC/SEC (size exclusion chromatography) software of Agilent Technologies (Santa Clara, USA) was used. Narrow distributed polystyrene standards with molar masses from 1681 to 2,000,000 g·mol−1 were used for calibration.
1260 infinity 2 high temperature gpc system
Manufactured by Agilent Technologies
Sourced in United States
The 1260 Infinity II High Temperature GPC System is a laboratory instrument designed for gel permeation chromatography (GPC) analysis at high temperatures. It is capable of performing size-exclusion chromatography (SEC) measurements on polymeric samples up to 220°C.
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Lab products found in correlation
2 protocols using 1260 infinity 2 high temperature gpc system
1
High Temperature GPC Analysis of PEF
2
PAEK-Based Membrane Characterization
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1H NMR and Fourier transform infrared (FT-IR) spectra of PAEK, PAEK–COOH, and PAEK-g-PEG were obtained with a Varian DLG400 using CDCl3, DMSO and a Bruker Equinox 55 spectrometer, respectively. Molar masses were determined via gel permeation chromatography (GPC) with an Agilent 1260 infinity II high-temperature GPC system at 80 °C and run in NMP and calibrated against polystyrene standards. Thermal properties of MPEs were analyzed using thermogravimetric analysis (TGA). All membranes were fully dried under vacuum at 80 °C for 48 h before measurements. TGA was performed with a Mettler TGA/SDTA851 TGA thermal analyzer within 30–700 °C in nitrogen flow at a heating rate of 10 °C min−1.
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1H NMR and Fourier transform infrared (FT-IR) spectra of PAEK, PAEK–COOH, and PAEK-g-PEG were obtained with a Varian DLG400 using CDCl3, DMSO and a Bruker Equinox 55 spectrometer, respectively. Molar masses were determined via gel permeation chromatography (GPC) with an Agilent 1260 infinity II high-temperature GPC system at 80 °C and run in NMP and calibrated against polystyrene standards. Thermal properties of MPEs were analyzed using thermogravimetric analysis (TGA). All membranes were fully dried under vacuum at 80 °C for 48 h before measurements. TGA was performed with a Mettler TGA/SDTA851 TGA thermal analyzer within 30–700 °C in nitrogen flow at a heating rate of 10 °C min−1.
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