Channels

 

Special Offers & Promotions

 

 

Latest News

 

 

View Channel

New Products

 

 

View Channel

Video Presentations

 

 

View Channel

Separation Science

 

 

View Channel

Microscopy & Image Analysis

 

 

View Channel

Laboratory Automation & IT Solutions

 

 

View Channel

 

Fast Measurement of Nanocrystal Length & Thickness

publication date: Sep 25, 2018
 | 
author/source: Postnova Analytics GmbH

Asymmetrical Flow Field Flow Fractionation


Postnova Analytics reports on how Asymmetrical Flow Field Flow Fractionation coupled to Multi Angle Light Scattering (AF4-MALS) has been successfully used to characterise a polydisperse cellulose nanocrystal for size and thickness in just 40 minutes analysis time.

Nanocrystals research has been an area of significant interest lately, due to a growing range of applications in advanced materials, biomedical, environmental, optical and semiconductor fields. Thorough size characterization of these nanocrystals is important since their rheological and control processing properties can be affected by their size, shape and surface area.

The authors of this new study propose AF4-MALS as an alternative to bulk characterization techniques such as Transmission Electron Microscopy (TEM), Atomic Force Microscopy (AFM) and Dynamic Light Scattering (DLS). The main advantages of AF4-MALS over the bulk characterization techniques are high resolution and fast analysis time.

Due to attractive properties including low thermal expansion, optical transparency, renewability, biodegradability, low toxicity and low cost - Cellulose nanocrystals are used in a range of industrial applications. In this study a Cellulose nanocrystal sample, isolated from softwood sulphite pulp, was analysed by AF4-MALS to measure the length and thickness of the crystals as a function of size. The cellulose nanocrystal length distribution was found to be in a good agreement with the result of the AFM analysis. Cellulose nanocrystal Rh (obtained from AF4) and R.M.S radii (obtained from MALS) were used to calculate cellulose nanocrystal thickness. The Cellulose nanocrystal thickness profile showed a broad distribution suggesting aggregation of single crystals at the larger end of the distribution.


more news from postnova analytics



If you have not logged into the website then please enter your details below.



 

Subscribe to any of our newsletters for the latest on new laboratory products, industry news, case studies and much more!

Newsletters from Lab Bulletin

 

Request your free copies HERE

 

 

 

Popular this Month

Top 10 most popular articles this month

 

 

Today's Picks

 


 

Looking for a Supplier?

Search by company or by product

 


Company Name:

Product:


 

 

 

 

Please note Lab Bulletin does not sell, supply any of the products featured on this website. If you have an enquiry, please use the contact form below the article or company profile and we will send your request to the supplier so that they can contact you directly.

Lab Bulletin is published by newleaf marketing communications ltd.


 

Media Partners

 

Exhibitions & Events