Topic macromolecules

Products macromolecules

Break-through in High Temperature Polymer Separation Technology

The AF2000 HT Series is the world's first commercial HTFFF instrument available and was invented and patented by Postnova Analytics. High Temperature Field-Flow Fractionation is a brand new technology ideally suited for the advanced separation of high molar mass polymers, such as polyethylene and polypropylene. more

News macromolecules

• Safer, easier system for remote explosive detection

  Detecting roadside bombs may become easier, thanks to chemical sensors being developed at the University of Michigan. A team led by chemistry professor Theodore Goodson III has created materials that sniff out TNT and give off signals that can be detected remotely - from a moving Humvee, for example more

• FEI and Scripps Research Institute Provide Open Source Code

  FEI and The Scripps Institute have announced that the Leginon(TM) software system, an advanced solution for automated control and image acquisition from a transmission electron microscope (TEM), will now be available to the global scientific community as open source code. The Leginon software was de more

• Max Planck Innovation Concludes Licensing Agreement for Technology Providing Unlimited Resolution in Microscopy

  Max Planck Innovation GmbH, the technology transfer agency of the Max Planck Society, has signed a co-exclusive license agreement with Leica Microsystems and Carl Zeiss MicroImaging GmbH for the RESOLFT (reversible saturable optical fluorescent transitions) technology, a method providing molecular s more

White papers macromolecules

• Field-Flow Fractionation - The Universal Separation Principle for Particle and Macromolecule Characterization
  

  High molecular weight polymers, bio molecules or particles in a range of a few nanometers up to several microns are more and more important in science and technology. Many applications are based on the specific properties of these materials. For this reason, an exact knowledge of the molar mass or particle sizes distribution is essential for later application as well as for optimization of the production processes or quality control. In addition the knowledge about the chain structure of macromolecules or biopolymers as well as about the shape of particles is often necessary. For this reason those samples, which often can be very complex systems, have to be separated according to parameters such as e.g. hydrodynamic volume or molecular weight. After the separation process the resulting narrow dispersed fractions are detected with different techniques. more

• Polyolefins: Determination of Molecular Weight and Branching Structure by GPC/SEC

  Polyethylene and Polypropylene are so-called Polyolefins. They are produced in large amounts every year. Depending on the process and catalyst used linear or branched polymers can be produced. In case of e. g. Polyethylene there are at least three polymer types: HDPE (High Density Polytheylene), LDPE (Low Density Polyethylene) and LLDPE (Linear Low Density Polytehylene). HDPE and LLDPE are made of linear or only slightly branched macromolecules with a high level of crystallinity. They form a dense structure in the final product. LDPE is made of highly branched molecules that form a final structure with low density due to a low degree of crystallinity. more

• Innovative column technology for liquid chromatography
  

  Fast, efficient and cost saving chromatography of various samples by application of a liquid stationary phase. Termination of disadvantages of the solid phase material used in classical chromatography. more

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