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Ecosec hlc 8320

Manufactured by Tosoh
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Sourced in Japan

The EcoSEC HLC-8320 is a high-performance liquid chromatography (HPLC) system designed for the analysis of polymer samples. It provides accurate and reliable molecular weight and size distribution measurements. The EcoSEC HLC-8320 is a versatile instrument suitable for a wide range of applications in polymer research and quality control.

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Lab products found in correlation

Superh3000, by Tosoh (2 mentions) K alpha, by Thermo Fisher Scientific (2 mentions) Sdta851, by Mettler Toledo (1 mentions) Jem 2100f, by JEOL (1 mentions) S 4800, by Hitachi (1 mentions) S 3100, by Scinco (1 mentions) Avio 500, by PerkinElmer (1 mentions)

5 protocols using ecosec hlc 8320

1

Polymer Characterization by GPC

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Example 61

See FIG. 81

The dissolved fragments were dissolved in CHCl3 at a concentration of 2 mg/mL. The material was then filtered through a 0.2 μm Teflon filter before analysis. GPC analysis was performed on a Tosoh EcoSEC HLC-8320 with dual TSKgel SuperH3000 columns and a chloroform mobile phase. Molecular weight calculations were performed using linear polystyrene standards.

US10988491B2. Degradable polymers of a cyclic silyl ether and uses thereof (2021-04-27). Massachusetts Institute of Technology [US]. Inventors: Jeremiah A. Johnson [US], Peyton Shieh [US], Wenxu Zhang [US].
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2

Comprehensive Characterization of Delaminated MXenes

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Scanning electron microscopy (SEM, S-4800, Hitachi, Japan), X-ray diffractometry (XRD, AERIS, Malvern, UK), and Fourier transform infrared spectroscopy (FTIR, Varian 660-IR, VARIAN, USA) were used to characterize the morphology, crystalline properties, and chemical functional groups of the delaminated MXenes. X-ray photoelectron spectroscopy (XPS, Thermo Scientific K-Alpha+, Thermo Fischer Scientific, USA) was used to perform chemical analyses of products obtained after each reaction step to evidence the success of surface modification. Transmission electron microscopy (TEM, JEM-2100F, JEOL, Japan) was used to characterize the morphology of the PE-grafted MXenes. Dynamic light scattering (DLS) and phase analysis light scattering (PALS) were performed to measure the hydrodynamic diameter (dH) and zeta potential of the particles, respectively, using a Zetasizer ZS90 (Malvern, UK). GPC (EcoSEC HLC-8320, Tosoh, Japan) was performed to characterize the Mw of the synthesized PEs. TGA (SDTA851, Mettler Toledo, USA) was used to estimate the amounts of grafted PEs. UV-vis spectroscopy (S-3100, SCINCO, Korea) was used to characterize the particle and dye concentration.
Lim S., Park H., Kim J.H., Yang J., Kwak C., Kim J., Ryu S.Y, & Lee J. (2020). Polyelectrolyte-grafted Ti3C2-MXenes stable in extreme salinity aquatic conditions for remediation of contaminated subsurface environments. RSC Advances, 10(43), 25966-25978.
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3

Characterization of Bottlebrush Polymers

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Example 24

For the PS and PLA-based bottlebrush polymers, 15 μL of the crude ROMP reaction mixture were diluted with 15 μL of dioxane. Next, 7 μL of 1M tetrabutylammonium fluoride in THF were added. The solution was incubated for 15 min before being diluted with 1 mL of chloroform, filtered through a 0.2 μm Teflon filter (A ChemTek), and analyzed by chloroform GPC.

GPC analysis was performed in a Tosoh EcoSEC HLC-8320 with dual TSKgel SuperH3000 columns and a chloroform mobile phase.

US10988491B2. Degradable polymers of a cyclic silyl ether and uses thereof (2021-04-27). Massachusetts Institute of Technology [US]. Inventors: Jeremiah A. Johnson [US], Peyton Shieh [US], Wenxu Zhang [US].
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4

Copolymer Molecular Weight Characterization

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Copolymer
sample (5 mg/mL) was prepared in tetrahydrofuran and analyzed using
GPC (Tosoh Bioscience EcoSEC HLC-8320: modular system with refractive
index and UV detectors) to find retention time and determine weight
average molecular weight, number average molecular weight, and PDI
of the synthesized copolymer.
Lipp L., Sharma D., Banerjee A, & Singh J. (2019). Controlled Delivery of Salmon Calcitonin Using Thermosensitive Triblock Copolymer Depot for Treatment of Osteoporosis. ACS Omega, 4(1), 1157-1166.
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5

PLGA Microspheres Degradation Analysis

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The surface morphology of remaining PLGA microspheres under incubation of 14 and 28 days was characterized using SEM. The microspheres under incubation of 0 and 28 days were dissolved in DMSO and acidized by HCl, and then the content of magnesium in the microspheres was assayed by inductively coupled plasma–atomic emission spectrometer (ICP-AES) (Avio 500, PerkinElmer, Waltham, MA, USA). The pH of supernatants collected from in vitro release assay were tested using electronic pH meter (pH5S, Sanxin, Hainan, China) at 20 °C. The microspheres under incubation of 7, 14, 21, 28 and 35 days were dissolved in tetrahydrofuran (THF) and analyzed by gel permeation chromatography (GPC) (EcoSEC HLC-8320, Tosoh, Tokyo, Japan) (polystyrene as the standard) to show the average molecular weight of degrading PLGA.
Ge Y., Hu Z., Chen J., Qin Y., Wu F, & Jin T. (2021). Exenatide Microspheres for Monthly Controlled-Release Aided by Magnesium Hydroxide. Pharmaceutics, 13(6), 816.
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