Polymer SourceTM
Analytical services
| Molecular weight determination | |
|---|---|
| Molecular weights, number (Mn) and weight average (Mw) and distribution (Mw/Mn) by size exclusion chromatography (SEC) is performed in THF, DMF, or in aqueous solvent. The SEC equipments are linked to on-line triple detectors: a Varian RI-4 refractive index, Viscotek 270 dual detector laser scattering and viscosity differential pressure (DP). |  |
| Sample Requirments: 100-200 mg | Prices: US$ 250/sample soluble in THF US$ 300/sample soluble in CHCl3, or water or DMF Results are delivered within 2-3 working days. |
| 1H NMR Analysis | |
|---|---|
| 1H NMR analysis is carried out on Varian 500MHz instrument |  |
| Sample Requirments: 100-200 mg | |
| Prices: US$ 50/sample soluble in deuterated THF/ CHCl3/water/DMF/DMSO | |
| Fourier Transform Infrared Spectroscopy (FTIR) | |
|---|---|
| Nicolet spectrophotometer (Avatar 330) connected to a computer with OMNIC software for the acquisition of spectra. |  |
| Sample Requirments: 50-100 mg | |
| Prices: 35 US$/Sample Results are delivered within 2-3 working days |
|
| Thermal Analysis | |
|---|---|
| TA Q100 Differential Scanning Calorimeter (DSC) is used to measure Tg, Tm, Tc, heat capacity and enthalpy at temperature range of -90 to 400 oC.. |  |
| Sample Requirments: 20-50 mg | Prices: US $50/sample US $225/5 samples Results are delivered within 2-3 working days. |
| Rheological measurement | |
|---|---|
| AR2000Ex Rheometer (TA Instruments) can measure oscillatory and steady state rheology of polymers as function of frequency and temperature. We can provide steady flow, viscoelastic characterization and mathematical modeling of unknown sample. |  |
| Sample Requirments: 5 ml or 5 g | |
| Prices: US$ 150/sample Results are delivered within 2-3 working days. | |