Publication: Erratum: Characterizing the yielding processes in pluronic-hyaluronic acid thermoreversible gelling systems using oscillatory rheology (Journal of Rheology (2019) 63:2 (215-228) DOI: 10.1122/1.5045073)
Date
01-05-2021
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Abstract
The authors wish to make a correction in the DLS data reported in [1] and its supplementary material. The delay time (i.e., x-axis) for all the DLS results is measured in “μs” and not “s.” Therefore, the fast and slow timescales in the two-mode decay of the Pl-HA systems in the solidlike state (at 37C temperature) might be related to diffusive in-cage and out-of cage relaxation of the micelles, respectively, as observed for colloidal glassy systems [2–4]. These are very different from the ultraslow micellar and inter-micellar level processes reported for block copolymer gels, respectively [5]. Specific changes related to this discussion are as follows: 1. Sections III A and V: Replace “polymer exchange between micelles” and “dynamic arm exchange” with “diffusive out-of cage relaxation of the micelles.” Likewise, replace “coupled dynamics of chains in the core” and “micellar core chain dynamics” with “diffusive in-cage relaxation of the micelles.” Also, replace “micellar and inter-micellar level” with “cage level micellar processes.” 2. Figure 3(c): Relaxation time, λDLS (i.e., y-axis) is in “μs” and not “s.” 3. Figure 13(b) is modified to Fig. 1. It can be observed that while DLS probes faster diffusive cage level relaxation processes, rheology seems to probe the comparatively slower relaxation processes corresponding to cage dynamics. The match at higher shear rates is intuitive owing to the continuous intracycle breaking and reformation of cages. 4. Section IV: Replace the point “From DLS,.....” with “From DLS, it is evident that the presence of HA affects diffusive cage level micellar processes, i.e., slower in-cage relaxation and faster out-of cage relaxation of micelles at lower HA content and vice versa at higher HA content.” (Figure Presented).