pps proceeding - Abstract Preview
pps proceeding
Symposium: S04 - Functional, Nano and Bio Composites
Oral Presentation
 
 

Layered Double Hydroxide Applications - Industry vs Research

Labuschagne Johan (1)*

(1) University of Pretoria - Gauteng - SouthAfrica

Research on Layered Double Hydroxides (LDH) polymer micro- and nano-omposites has been very active for close to 40 years now. Since the late 1970s, when the first research papers on LDH as heat stabiliser for first were published, the number of publications on LDH based polymer composites increased significantly. Many papers on the possible applications of LDH in polyethylene, polypropylene, ethylene vinyl acetate, ethylene vinyl alcohol, poly vinyl chloride, etc have been published. In these research papers based on LDH materials, functionalities such as thermal (heat) stability, acid scavengers, flame retardants, increase UV resistance, enhanced stiffness, increased impact strength, reduced heat distortion, increased cooling rates, reduced shrinkage, reduced warpage, reduced solvent uptake, increased barrier properties, increase bio-degradability, pigmentation, etc. Yet, only a hand full of companies currently sell any form of LDH (and mainly hydrotalcite) commercially. And the applications for these commercial LDH materials are only as PVC heat stabilisers and polyolefin acid scavengers. From this the question… Why such few commercial applications if research show so many possible applications. We think the answer is simple. Cost! And from here out interest in the commercially viable synthesis of LDH materials for polymer applications. The low cost, environmentally friendly synthesis techniques developed based on green chemistry based synthesis techniques are the focus of our research. We have already proved the comparable performance of our material to the typical materials synthesised in research papers. Some of these will be discussed in this presentation.