Question: Polyethylene glycol, one of the chemical components in Polyether block amide serves what purpose?
Sentence (from "Polyether block amide"): It is a block copolymer obtained by polycondensation of a carboxylic acid polyamide (PA6, PA11, PA12) with an alcohol termination polyether (Polytetramethylene glycol PTMG), PEG).
Relevant evidence: Yes