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Upgrading research capacities

Malvern Zetasizer Nano

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Within the work package WP4 – Upgrading research capacities, the Malvern Zetasizer Nano, with Multi-purpose titration has been purchased from the Malvern Instruments UK and installed at the Department of Materials Engineering (DEMATEN), Novi Sad, Serbia. Young researchers have already been trained by an expert from Hemtek Company.
Malvern Zetasizer Nano system is based on dynamic light scattering (measures Brownian motion and relates it to the particle size), which enables the measurement of size, molecular weight and zeta potential of dispersed particles and molecules in solution. Thus, using the technique of Non-Invasive Back-Scatter detection it is possible to measure size of particles dispersed in solution in the range 0.6 – 6000 nm, with higher concentrations of samples without negative effect of multiple scattering. This system also can measure zeta potential of small particles (with size range 5 – 10000 nm) and molecular weight in relatively broad range (103 – 2×107 Daltons) by using Laser Doppler Velocimerty combined with Phase Analysis Light Scattering. In addition, operating sophisticated equipment as described above requires proper training at customer site after installation, as well as warranty and post – warranty maintenance and service when needed.

 

Gel Performance Chromatography (GPC) system

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Within the work package WP4 – Upgrading research capacities, the Gel Performance Chromatography (GPC), Waters Breeze System, has been purchased and installed at the Department of Materials Engineering (DEMATEN), Novi Sad, Serbia. Young researchers have already been trained by an expert from Hemtek Company.
Gel Performance Chromatography (GPC) system measures molecular weight of dispersed molecules in solution (range for molecular weight 103 – 107 Daltons). GPC requires an HPLC system that delivers precise flow. In GPC, the retention time is plotted against the log of the molecular weight, thus, flow rate variations become magnified exponentially in the calculated molecular weight distributions. Calculated molecular weights are obtained from an elution volume calibration curve generated using standards and plotted on a log scale. Any change in flow (elution volume as plotted on the linear X axis) will result in a large deviation in molecular weight (plotted as a log function on the Y axis). For a linear calibration curve, a 1% change in flow rate translates to a 10% change in calculated molecular weight. Waters Breeze System for GPC analyses offer flow precision of better than 0.10% (e.g. Retention time relative standard deviation (RSD) for polystyrene standards = 0.03% or better). This level of performance ensures excellent molecular weight reproducibility, producing weight average and number average RSD of below 1.5%.
Gel Performance Chromatography (GPC), Waters Breeze System (presented at figure bellow), consists of: isocratic manual RI workstation (isocratic pump, rheodyne manual injector, RI-detector, HPLC/GPC station), columns, column heater and support parts.

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Upgrading research capacities

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The objectives of the proposed project are reinforcement of research potential of DEMATEN and strengthening partnerships among centers of excellence established in the EU and the Western Balkan Countries (WBC). Thus, upgrading and renewal of S&T research equipment is one of the most important activities, which should be realized through WP 4.
The following deliverables would provide the information regarding the activities of WP 4 throughout the project:
• Tender documentation for equipment, (download PDF)
• Report - Selection of the best offer for equipment, (download PDF)
• Report - Equipment: purchase, installation, training.

The plan for the first Project year was completely realized – Malvern Zetasizer Nano ZS and Waters Gel Permeation Chromatograph were purchased and delivered to the Department of Materials Engineering, at Faculty of Technology, University of Novi Sad.