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Ticona Introduces family of antimicrobial acetal copolymers
16
Jan '08
The growing concern over bacterial contamination in many settings has led Ticona, the engineering polymers business of Celanese Corporation, to introduce Anti-Crobe Antimicrobial Polymers, a family of antimicrobial acetal copolymers (POM) that includes two injection molding grades and an extrusion grade.

The line is targeted at applications calling for high-performance polymers in environments where heat, moisture and nutrients foster bacterial and fungal growth.

Evaluation of two Anti-Crobe acetals grades using the Efficacy Test Method JIS Z 2801 for microbe proliferation showed they greatly inhibited microbial growth compared to conventional acetal. The tests indicate that Anti-Crobe AM90S Plus is suitable for rapid bacterial control, while Anti-Crobe AM90S is appropriate in less-demanding situations.

Evaluations of these grades, which are made with the company's Hostaform and Celcon POMs, found they greatly inhibit microbial proliferation compared to conventional acetal. The tests considered bacterial growth at 35°C (99°F) over 24 hours. One of the injection molded grades, Anti-Crobe AM90S Plus, gave a log 4 reduction in bacterial activity within 5 hours.

The other injection molding grade, Anti-Crobe AM90S, had a similar action within 24 hours. These results indicate that Anti-Crobe AM90S Plus is suitable for rapid bacterial control, while Anti-Crobe AM90S is appropriate in less-demanding situations.

"The advanced, inorganic antimicrobial formulation in these grades is present throughout the polymer matrix, not just on the surface, and does not migrate significantly," says Davida Barrett, Technical Marketing.

"This means that Anti-Crobe resins won't abrade or scratch off, so they preserve product performance and service life by deterring bacteria and fungal attack that can cause odors, contamination, stains, biofilms and mechanical property loss."

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