Unique Additives for Polymer Modification

Interfacial Technology

Optimization of interfaces is the key to good polymer composites and blends. Addition of just one or two percent modifier can dramatically improve processability, mechanical properties and aesthetics. Effective modifiers are additives that are able to compatibilize two different materials, for example a filler and a polymer or a blend of two polymers. Normally, different materials have poor compatibility, leading to problems with dispersion, void formation and adhesion. An effective modifier is able to act as a mediator which imparts compatibility and thereby boosts properties. In order to fulfill that role, the interfacial modifier has to first get to the interface and once there, to form a bridge between the two dissimilar materials.
  • The additive has to get to the interface which requires control of the molecular weight
  • The additive must have chemistry that allows it to interact with both surfaces present at the interface, thus the chemistry needs to be tunable to suit different fillers and polymers
Although there are effective modifiers available on the market, they have serious limitations. Firstly, the chemistries are limited, so they may not be effective in your formulation. Secondly, there is little to no control of molecular weight so the additives may not be able to reach the interface in time, for example during an extrusion process. Lastly, the products tend to be standard offerings that are designed to have acceptable performance in a wide range of formulations which means they do not show outstanding performance in any.

Cray Valley takes a very different approach. By offering a wide range of chemistries, it is possible to select additives that match the needs of your material. Close control over molecular weight means that the modifier can be tailored to ensure the additive can reach the interface to do its job. Lastly, Cray Valley has the expertise to create new products to meet your needs. This means you can get better performance but also that you can get an edge over your competitors who are likely to be using a standard, off-the-shelf solution.

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Author
Dr. Chris DeArmitt
President of Phantom Plastics
www.PhantomPlastics.com
Cray Valley Hydrocarbon Specialty Chemicals  |  468 Thomas Jones Way, Suite 100  |  Exton PA 19341  |  USA  |  www.CrayValley.com