Letter to the Editor: Wall slip in dispersion rheometry

TL;DR

This paper emphasizes the importance of recognizing wall slip in dispersion rheometry, highlighting the need for better measurement practices and awareness of slip phenomena to improve experimental accuracy.

Contribution

It advocates for increased awareness and detailed reporting of wall slip effects in dispersion rheometry to enhance measurement reliability.

Findings

Wall slip is often overlooked in dispersion rheometry studies.

Proper measurement of wall slip requires experience and judgment.

Improved awareness can lead to more accurate rheological measurements.

Abstract

Whereas our understanding of the role and mechanism of wall slip has improved substantially over the last decade or two, it is still common to see papers on disperse systems appear wherein scant details of the measurement methods are given and wherein no mention of the possibility (probability?) of slip is made. It is argued that there is a need to raise awareness. It takes experience, judgement and skill to make meaningful measurements on disperse systems and it is suspected that the nature of the experimental challenge is under-estimated grossly by too many workers even now.