Alexium International Group Ltd. said its chief executive officer, Dirk Van Hyning, resigned this week for personal reasons. He was appointed CEO in June 2017.
Robert Brookins, Alexium’s executive vice president of research and development, has been appointed interim CEO. Alexium, based in Greer, S.C., and Perth, Australia, makes flame-retardant and PCM-enhanced fabric treatments.
In April, Alexium announced that it had developed an "innovative thermal analytical testing methodology" to measure the cooling capacity of PCM-enhanced products used on pillows, sheets and mattresses.
In an April 23 news release, the company said:
"Alexium developed a testing protocol using a standard industry tool to quantify the cooling capacity, or enthalpic cooling, of PCM products when applied to pillows and other bedding fabrics. As a result, using this testing protocol, pillows treated with Alexium’s Alexicool PCM solution were shown to deliver over 500% greater cooling capacity than commercially available pillows treated with other PCM products.
"Testing was conducted on microencapsulated octadecane-based PCM in a controlled lab environment using a differential scanning calorimetry method developed by Alexium scientists with a TA Instrument DSC 250. The method was developed to be applicable across a wide range of fiber composition, fabric construction, and types of PCM."
Alexium said the protocol allows for "facile adoption by the industry." But the company has not responded to questions about whether a detailed description of the protocol would be made public so that results can be replicated and a new industry standard established. It is not clear how the protocol compares to other known methods used for quantifying cooling capacity, such as ASTM Standard D7984.