Question: Polyethylene glycol, one of the chemical components in Polyether block amide serves what purpose?
Sentence (from "Polyethylene 2,5-furandicarboxylate"): PEF has been described in (patent) literature since 1951, but has gained renewed attention since the US department of energy proclaimed its building block, FDCA, as a potential bio-based replacement for purified terephthalic acid (PTA) in 2004.
Relevant evidence: No