Polydispersed Detonation Nanodiamond and Approaches for its Fractioning

摘要

While primary particles of detonation nanodiamond (DND) are within the 2-10nm size range, during the synthesis and purification processes DND aggregates up to several microns are typically formed. Tightly- and loosely-bond aggregates originate from chemical and Van-der-Waals types of bonding between primary particles. In this paper, industrial methods of disaggregating DND product using specific ultrasonic treatment followed by fractioning will be discussed. Importantly, the demonstrated approach of combining ultrasonic treatment with centrifugation avoids contamination of the final DND product.