PDO
Polydioxanone
Glass Transition (Tg)
-10 °C
Melting Point (Tm)
110–115 °C
Density
1.32 g/cm³
CAS Number
31621-87-1
Recycling Code
♺ 7
Category
Biodegradable
Repeat Unit
–[O–CH₂–CH₂–O–CH₂–CO]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
Ether linkage in the backbone provides flexibility rare among absorbable polyesters; retains strength ~6 weeks in vivo.
Applications
Monofilament absorbable sutures (PDS), cardiovascular scaffolds.