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Investigations into the potential abrasive release of nanomaterials due to material stress conditions. Pt.A: Carbon black nano-particulates in plastic and rubber composites

: Bott, Johannes; Franz, Roland

Fulltext ()

Applied Sciences 9 (2019), No.2, Art. 214, 14 pp.
ISSN: 2076-3417
Journal Article, Electronic Publication
Fraunhofer IVV ()

Plastic and rubber based composites containing carbon black (CB) were investigated for the potential to release CB nano-particulates under stress conditions into food simulants. Nanocomposites were exposed to thermal, chemical, and mechanical stress, followed by mechanical abrasion of their surface. Particle sensitive asymmetric flow field-flow fractionation (AF4) with multi angle laser light scattering (MALLS) detection was used to detect and quantify CB nano-particulates. This study demonstrates that, even under dynamic stress conditions, CB nano-particulates are not released from the plastic or rubber compounds into food. This study intends also to propose a general nano-release stress test protocol for plastic materials coming into contact with foodstuff.