. 2022 Jul 30;89:106108. doi: 10.1016/j.ultsonch.2022.106108

Table 1.

Particle size and ζ-potential of PPI and treated PPI samples.

Samples	PPI	UPPI	PPI-10	UPPI-10	PPI-12	UPPI-12
Particle size (nm)	1218.30 ± 251.31^c	1322.67 ± 110.02^c	666.93 ± 76.02^b	154.13 ± 0.42^a	137.07 ± 1.35^a	71.88 ± 2.14^a
ζ-potential (mV)	−36.23 ± 0.71^a	–32.98 ± 1.47^bc	–33.47 ± 0.59^bc	–33.66 ± 0.78^b	−31.60 ± 0.41^c	−27.26 ± 1.62^d