An Agilent Infinity II MDS instrument equipped with differential refractive index (DRI), viscometry (VS), dual-angle light scatter (LS) and variable wavelength UV detectors (set at 309 nm) was used for all SEC analysis. The system was fitted with 2× PLgel Mixed D columns (300 × 7.5 mm) and a PLgel 5 μm guard column. The eluent utilized was DMF with 5 mmol NH4BF4 additive at a flow rate of 1.0 mL·min−1 at 50°C. Poly(methyl methacrylate) standards (Agilent EasyVials) were used for calibration between 955 000 and 550 g·mol−1. Samples were prepared in the mobile phase and passed through a nylon membrane with 0.22 μm pore size prior to injection. Agilent GPC/SEC Software was used to determine experimental molar mass (MnSEC), experimental molecular weight (MwSEC) and dispersity (Đ) of synthesized polymers.
Easyvials
Manufactured by Agilent Technologies
Sourced in United States
EasyVials are a line of laboratory vials designed for convenient sample storage and handling. These vials feature a simple and intuitive design to facilitate easy sample identification and management in a laboratory setting.
Automatically generated - may contain errors
Lab products found in correlation
Gpc sec software, by Agilent Technologies (8 mentions)
Infinity 2 mds instrument, by Agilent Technologies (6 mentions)
Pl 50 instrument, by Polymer Laboratories (3 mentions)
390 lc mds instrument, by Agilent Technologies (2 mentions)
Sil 20ad automatic injector, by Shimadzu (1 mentions)
Agilent gpc sec software, by Agilent Technologies (1 mentions)
Deuterated solvent, by Merck Group (1 mentions)
Triethylamine, by Merck Group (1 mentions)
16 protocols using easyvials
1
SEC Characterization of Synthesized Polymers
2
SEC Analysis of PMMA Polymers
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SEC analysis was performed on an Infinity II MDS instrument (Agilent) equipped with differential refractive index (DRI), viscometry (VS), dual angle light scatter (LS) and variable wavelength UV detectors. The system was equipped with 2 × PLgel Mixed D columns (300 × 7.5 mm) and a PLgel 5 μm guard column. The mobile phase used was dimethylformamide (DMF) HPLC grade containing 5 mM NH4BF4 at 50 °C at flow rate of 1.0 mL min−1. Poly(methyl methacrylate) (PMMA) standards (Agilent EasyVials) were used for calibration between 555–955 000 g mol−1. Analyte samples were filtered through a nylon membrane with 0.22 μm pore size before injection. Number average molecular weights (Mn), weight average molecular weights (Mw) and dispersities (ĐM = Mw/Mn) were determined by conventional calibration using Agilent SEC software.
3
Size Exclusion Chromatography Analysis of Polymers
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Size exclusion chromatography
(SEC) analysis
was performed on two systems: DMF-SEC: Agilent 390-LC MDS instrument
equipped with differential refractive index, viscometry, dual angle
light scatter, and dual wavelength UV detectors. The system was equipped
with 2 × PLgel Mixed D columns (300 × 7.5 mm) and a PLgel
5 μm guard column. The eluent is DMF with 5 mmol NH4BF4 additive. Samples were run at 1 mL min–1 at 50 °C. Poly(methyl methacrylate) standards (Agilent EasyVials)
were used for calibration, MW ranging from 550 to 2.14 × 106 g mol–1. Analyte samples were filtered
through a nylon membrane with 0.22 μm pore size before injection.
Experimental molar mass (Mn,SEC) and dispersity (D̵) values of synthesized polymers were determined
by conventional calibration using Agilent GPC/SEC software.
Dimethylacetamide (DMAC)-SEC was performed on a Shimadzu modular
system comprising an SIL-20AD automatic injector, a RID-10A differential
refractive-index detector, and a 50 × 7.8 mm guard column followed
by three KF-805L columns (300 × 8 mm, bead size: 10 μm,
pore size maximum: 5000 Å). N,N-dimethylacetamide (DMAc, 0.03% LiBr) was used as the eluent with
a flow rate of 1 mL min–1 at 50 °C. Samples
were filtered through 0.45 μm poly(tetrafluoroethylene) filters
before injection. The SEC calibration was performed with polystyrene
standards, ranging from 500 to 2 × 106 g mol–1.
(SEC) analysis
was performed on two systems: DMF-SEC: Agilent 390-LC MDS instrument
equipped with differential refractive index, viscometry, dual angle
light scatter, and dual wavelength UV detectors. The system was equipped
with 2 × PLgel Mixed D columns (300 × 7.5 mm) and a PLgel
5 μm guard column. The eluent is DMF with 5 mmol NH4BF4 additive. Samples were run at 1 mL min–1 at 50 °C. Poly(methyl methacrylate) standards (Agilent EasyVials)
were used for calibration, MW ranging from 550 to 2.14 × 106 g mol–1. Analyte samples were filtered
through a nylon membrane with 0.22 μm pore size before injection.
Experimental molar mass (Mn,SEC) and dispersity (D̵) values of synthesized polymers were determined
by conventional calibration using Agilent GPC/SEC software.
Dimethylacetamide (DMAC)-SEC was performed on a Shimadzu modular
system comprising an SIL-20AD automatic injector, a RID-10A differential
refractive-index detector, and a 50 × 7.8 mm guard column followed
by three KF-805L columns (300 × 8 mm, bead size: 10 μm,
pore size maximum: 5000 Å). N,N-dimethylacetamide (DMAc, 0.03% LiBr) was used as the eluent with
a flow rate of 1 mL min–1 at 50 °C. Samples
were filtered through 0.45 μm poly(tetrafluoroethylene) filters
before injection. The SEC calibration was performed with polystyrene
standards, ranging from 500 to 2 × 106 g mol–1.
4
Size Exclusion Chromatography of Polymers
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A Polymer Laboratories
PL-50 instrument equipped with a differential refractive index (DRI)
was used for size exclusion chromatography (SEC) analysis. The system
was fitted with 2× PLgel Mixed D columns (300 mm × 7.5 mm)
and a PLgel 5 μm guard column. The eluent used was DMF with
0.1% LiBr. Samples were run at 1 mL min–1 at 50
°C. Poly(methyl methacrylate) standards (Agilent EasyVials) were
used for calibration between 955,500 and 550 g mol–1. Analyte samples were filtered through a membrane with a 0.22 μm
pore size before injection. Experimental molar mass (Mn,SEC) and dispersity (D̵) values
of synthesized polymers were determined by conventional calibration
using Cirrus GPC software.
PL-50 instrument equipped with a differential refractive index (DRI)
was used for size exclusion chromatography (SEC) analysis. The system
was fitted with 2× PLgel Mixed D columns (300 mm × 7.5 mm)
and a PLgel 5 μm guard column. The eluent used was DMF with
0.1% LiBr. Samples were run at 1 mL min–1 at 50
°C. Poly(methyl methacrylate) standards (Agilent EasyVials) were
used for calibration between 955,500 and 550 g mol–1. Analyte samples were filtered through a membrane with a 0.22 μm
pore size before injection. Experimental molar mass (Mn,SEC) and dispersity (D̵) values
of synthesized polymers were determined by conventional calibration
using Cirrus GPC software.
5
Polymer molar mass and dispersity analysis
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SEC was used for measurement
of the molar mass and dispersity of the polymers and collected on
an Agilent Infinity II MDS instrument using CHCl3 containing
2% TEA (triethylamine) as the mobile phase at 30 °C. The equipment
was fitted with a differential refractive index (DRI), dual angle
UV and viscometry detectors, 2 PLgel mixed C columns (300 mm ×
7.5 mm), and a PLgel 5 μm guard column for separation and an
autosampler for sample injection. Narrow molar mass poly(methyl methacrylate)
and polystyrene standards (Agilent EasyVials) were used for calibration
of the DRI trace. Ethanol was added to the eluent and used as a flow
rate marker. Analyte samples were filtered through a GVHP membrane
with 0.22 μm pore size before injection, and all samples were
passed through 0.2 μm PTFE filter before analysis.
of the molar mass and dispersity of the polymers and collected on
an Agilent Infinity II MDS instrument using CHCl3 containing
2% TEA (triethylamine) as the mobile phase at 30 °C. The equipment
was fitted with a differential refractive index (DRI), dual angle
UV and viscometry detectors, 2 PLgel mixed C columns (300 mm ×
7.5 mm), and a PLgel 5 μm guard column for separation and an
autosampler for sample injection. Narrow molar mass poly(methyl methacrylate)
and polystyrene standards (Agilent EasyVials) were used for calibration
of the DRI trace. Ethanol was added to the eluent and used as a flow
rate marker. Analyte samples were filtered through a GVHP membrane
with 0.22 μm pore size before injection, and all samples were
passed through 0.2 μm PTFE filter before analysis.
6
Polymer Characterization by SEC-MALS
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Size exclusion chromatography (SEC) analysis was performed on an Agilent Infinity II MDS instrument equipped with differential refractive index (DRI), viscometry (VS), dual angle light scatter (LS) and variable wavelength UV detectors. The system was equipped with 2× PLgel Mixed D columns (300 × 7.5 mm) and a PLgel 5 μm guard column. The mobile phase used was DMF (HPLC grade) containing 5 mM NH4BF4 at 50 °C at flow rate of 1.0 ml min−1. Poly(methyl methacrylate) (PMMA) standards (Agilent EasyVials) were used for calibration between 955 000–550 g moL−1. Analyte samples were filtered through a nylon membrane with 0.22 μm pore size before injection. Number average molecular weights (Mn), weight average molecular weights (Mw) and dispersities (ĐM = Mw/Mn) were determined by conventional calibration and universal calibration using Agilent GPC/SEC software.
7
SEC Analysis of Synthetic Polymers
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A Polymer Laboratories PL‐50 instrument equipped with differential refractive index (DRI) was used for SEC analysis. The system was fitted with 2× PLgel Mixed D columns (300 × 7.5 mm) and a PLgel 5 µm guard column. The eluent used was DMF with 0.1% LiBr. Samples were run at 1 mL min−1 at 50 °C. Poly(methyl methacrylate) standards (Agilent EasyVials) were used for calibration between 955,500 and 550 g mol−1. Analyte samples were filtered through a membrane with 0.22 µm pore size before injection. Experimental molar mass (Mn,SEC) and dispersity (Đ) values of synthesized polymers were determined by conventional calibration using Cirrus GPC software.
8
SEC Characterization of Synthesized Polymers
9
SEC Analysis of Synthetic Polymers
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A Polymer Laboratories PL-50 instrument equipped with differential refractive index (DRI) was used for SEC analysis. The system was fitted with 2 × PLgel mixed D columns (300 × 7.5 mm) and a PLgel 5 μm guard column. The eluent used was DMF with 0.1% LiBr. Samples were run at 1 mL min−1 at 50 °C. Poly(methyl methacrylate) standards (Agilent EasyVials) were used for calibration between 955 500–550 g mol−1. Analyte samples were filtered through a membrane with 0.22 μm pore size before injection. Experimental molar mass (Mn, SEC) and dispersity (Đ) values of synthesised polymers were determined by conventional calibration using Cirrus GPC software.
10
Characterization of Synthetic Polymers
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An
Agilent Infinity II MDS instrument equipped with differential refractive
index, viscometry, dual angle light scatter, and variable wavelength
UV detectors was used. The system was equipped with 2× PLgel
Mixed D columns (300 × 7.5 mm) and a PLgel 5 μm guard column.
The eluent was DMF with 5 mmol NH4BF4 additive.
Samples were run at 1 mL min–1 at 50 °C. Poly(methyl
methacrylate) standards (Agilent EasyVials) were used for calibration
between 955,000 and 550 g mol–1. Analyte samples
were filtered through a nylon membrane with 0.22 μm pore size
before injection. The experimental molar mass (Mn, SEC) and dispersity (D̵) values of
the synthesized polymers were determined by conventional calibration
and universal calibration, respectively, using Agilent GPC/SEC software.
Agilent Infinity II MDS instrument equipped with differential refractive
index, viscometry, dual angle light scatter, and variable wavelength
UV detectors was used. The system was equipped with 2× PLgel
Mixed D columns (300 × 7.5 mm) and a PLgel 5 μm guard column.
The eluent was DMF with 5 mmol NH4BF4 additive.
Samples were run at 1 mL min–1 at 50 °C. Poly(methyl
methacrylate) standards (Agilent EasyVials) were used for calibration
between 955,000 and 550 g mol–1. Analyte samples
were filtered through a nylon membrane with 0.22 μm pore size
before injection. The experimental molar mass (Mn, SEC) and dispersity (D̵) values of
the synthesized polymers were determined by conventional calibration
and universal calibration, respectively, using Agilent GPC/SEC software.
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