PEtOx
Poly(2-ethyl-2-oxazoline)
Glass Transition (Tg)
55–60 °C
Melting Point (Tm)
— (amorphous)
Density
~1.14 g/cm³
CAS Number
25805-17-8
Recycling Code
♺ 7
Category
Functional & Smart
Repeat Unit
–[N(CO–C₂H₅)–CH₂–CH₂]ₙ–
The repeating unit is the smallest structural fragment whose repetition builds the whole chain. Subscripts show the relative share of each unit in copolymers.
Key Properties
A leading PEG alternative ("PEGylation without PEG"): stealth behaviour, low toxicity and living cationic ring-opening polymerisation giving precise architectures; LCST tunable by side chain.
Applications
Drug-delivery conjugates, hydrogels for nerve repair, antifouling coatings.