Chromatography

  • Simplifying Entangled Polymer Synthesis

Simplifying Entangled Polymer Synthesis

Feb 16 2012 Read 1908 Times

University of Houston, USA, researchers have recently developed and verified a new route for synthesising superior forms of entangled or knotted polymers with predesigned characteristics for use in applications such as drug delivery and smart coatings. Using a Viscotek 270max triple detector gel permeation chromatography (GPC) system from Malvern Instruments, the Houston team successfully confirmed the innovative synthesis of interlocking polymer rings (catenanes) by atom transfer radical polymerisation (ATRP) from templated initiators. By combining refractive index (RI), viscosity and light scattering detection, the 270max provides reliable molecular weight data and easy detection of the degree of synthesis throughout the method development, as well as verifying the character of final polymers imaged using atomic force microscopy (AFM). “The Viscotek 270max is critical to verifying this new method
of polymerisation,” explained Professor Rigoberto Advincula, Department of Chemistry, University of Houston. “These are high molecular weight polymers and ring closure is a thermodynamically difficult reaction that must be done under dilute conditions.

Using the triple detection offered by 270max, we were able to effectively characterise the molecular weight of our sample and detect the degree of ring closure versus the amount of non-closed polymer.” The University of Houston’s initial success implies that it will be possible to synthesise superior knotted polymers for applications in coatings, lubricants and surface modifiers, among others. In terms of polymer theory, Professor Advincula’s team also plans to make catenated and knotted block co-polymers. The project has been funded by the National Science Foundation (USA). A paper outlining the new method is being published in Chemical Communication from the Royal Society of Chemistry and is now available online. The Viscotek 270max from Malvern Instruments is a complete, advanced multidetector GPC/SEC system suitable for all macromolecular applications, particularly research.

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment





Digital Edition

Measurement Analysis China 2021 Buyers Guide

November 2020

The following Buyers’ Guide has been produced by International Labmate Ltd. International Labmate have been publishing magazines for over 46 years. We now publish 9 laboratory, environmental and...

View all digital editions

Events

Expomed Eurasia - NEW DATES

Nov 05 2020 Istanbul, Turkey

Pharma Asia - NEW DATES

Nov 10 2020 Karachi, Pakistan

JASIS 2020

Nov 11 2020 Chiba City, Japan

International Solid Waste Management Summit

Nov 12 2020 Shanghai, China

SETAC North America

Nov 15 2020 Virtual event

View all events