Abstract
AbstractPolyetherimides have been evaluated as non‐toxic and steam‐sterilizable and are therefore potentially suited for biomedical applications. To enable a broader range of potential applications, polyetherimides with lower Tg, higher elasticity at room temperature and better processability are required. Our concept was to explore, whether the incorporation of 3‐methoxy‐1,2‐propanediol moieties in the main chain lead to a reduction of Tg and increase the elastic properties of the polymer compared to commercially available polyetherimides from 4,4′‐(4,4′‐isopropylidenediphenoxy)bis(phthalic anhydride) and 1,3‐diaminobenzene. Two different monomers were synthesized and co‐condensated with each other or using 4,4,4′‐(4,4′‐isopropylidenediphenoxy)bis(phthalic anhydride), respectively. The results proofed the successful synthesis and polymerization leading to polymers with molecular weights up to Mn = 6,400 g/mol. The polymers showed lowered Tg, resistance to heat up to 400 °C, tendencies to reduced contact angles and partially reduced E‐moduli in comparison to the commercial polyetherimide ULTEM 1000.
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