Malvern Presents Proven Strategies for Successful GPC/SEC Analysis of Lignin

色谱专家Malvern Alachyticalwill present a reliable optimized solution for lignin characterization at a series of upcoming conferences in 2015, the first of which is Nordic Polymer Days, Denmark, June 1 – 3.

利用多探测器GPC/SEC的潜力进行木质素分析。

Lignin is a vital industrial polymer but presents significant challenges when it comes to measurement of the properties that define its performance. Through experimental study Malvern Panalytical has identified the best strategy to apply when using gel permeation/size exclusion chromatography (GPC/SEC) to secure reliable information.

The results of this work will also be presented at the 13th Annual UNESCO/IUPAC Conference on Macromolecules and Materials, South Africa, September 8 – 10; and the 18th International Symposium on Wood, Fiber and Pulping Chemistry, Austria, September 9 – 11.

Lignin is a natural polymer, derived from wood and other vascular plants, that finds application as, for example, a biofuel, a dispersant in high performance cement, and oilfield additive. GPC/SEC is used to measure the molecular weight (MW), MW distribution, viscosity and structural properties that control its performance. However, lignin has an unusual molecular structure in solution which compromises data accuracy when conventional, single detector, calibration-based GPC/SEC is applied.

Malvern Alachytical’s solution exploits the capabilities of multi-detector GPC/SEC. This involves the use of a light scattering detector to directly measure MW without any requirement for calibration. Here though, the tendency for lignin to fluoresce in solution, thereby distorting light scattering data, can be problematic. The data from Malvern Panalytical shows how careful choice of experimental conditions and methods can overcome challenges in the measurement of lignins and provide reliable results. A comparison of lignins from different sources, using a Mark-Houwink plot generated from the resulting data, highlights the robustness of the method in obtaining valuable insight into the structure of these polymers.

For more information on Malvern Panalytical GPC/SEC systems visitwww.malvern.com/OMNISEC

Malvern Alachyticaland Malvern Panalytical are registered trademarks of Malvern Panalytical

关于Malvern Alachytical

Malvern Panalytical提供了材料和生物物理表征技术亚博网站下载和专业知识,使科学家和工程师能够理解和控制分散系统的特性。这些系统范围从溶液,颗粒和纳米颗粒悬浮液和乳液中的蛋白质和聚合物到喷雾剂和气溶胶,工业散装粉末以及高浓度浆。Malvern Panalytication的材料表征在研究,开发和制造的所有阶段使用,提供了关键信息,可帮助加速研究和产品开发,增强和维护产品质量并优化过程效率。亚博网站下载

Our products reflect Malvern Panalytical’s drive to exploit the latest technological innovations and our commitment to maximizing the potential of established techniques. They are used by both industry and academia, in sectors ranging from pharmaceuticals and biopharmaceuticals to bulk chemicals, cement, plastics and polymers, energy and the environment.

Malvern Alacytical Systems用于测量粒径,颗粒形,Zeta电位,蛋白质电荷,分子量,质量,大小和构象,纳米颗粒的大小和计数,流变学特性和化学识别,并促进对许多不同工业的分散系统的理解和申请。

Malvern Panalytical总部位于英国的Malvern Panalytict,在所有主要欧洲市场,北美,墨西哥,中国,日本和韩国都有子公司组织,这是印度的合资企业,全球分销商网络和全球应用程序实验室。www.malvern.com

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