Polyethylene glycol, one of the chemical components in Polyether block amide serves what purpose?
Polyether block amide: Polyether block amide or PEBA is a thermoplastic elastomer (TPE). 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).
i don't know