Dndc of pmma in dmf4/29/2023 ![]() GPC Mode Sample Cell: 0.25 µL, GPC Mode Reference Cell: 100 µL Wavelength selection: 620, 535 or 470 nmĭead Volume (Inlet to Cell/Cell to Outlet).The mixture was kept at room temperature. One gram each of the polymers was dissolved in 50 ml of DMF/Acetone each by magnetic stirring for one hour. Acetone was used as a common solvent for the preparation PMMACA polyblends. Most importantly, warm-up time for the BI-DNDC is only one hour, much less than other models on the market. Dimethyl formamide (DMF) was used as a common solvent for preparing polymer solutions of CAP and PMMA. It includes a microprocessor, which allows user-friendly handling of all functions of the instrument, as well as refractive index and temperature data transfer to a personal computer via a standard serial interface. The BI-DNDC can be set using the front panel controls and read using the LED readout or by an external computer. ![]() In GPC/SEC mode, dn/dc is already known, and the instrument is used as a concentration detector for GPC/SEC applications.Īll major features are user programmable in order to achieve the maximum flexibility. This value is required as a parameter in molecular weight measurements using light scattering. ![]() In batch mode, the specific refractive index increment, dn/dc, is determined. The BI-DNDC is a deflection type refractometer that may be purchased for use in either batch or GPC/SEC mode. ![]()
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