Same as in the case of the homopolymers, the terminal Boc moiety was used for end group analysis by values. After dialysis and lyophilisation, the triblock copolymers were analysed by GPC (Fig. ). GPC elugrams of all copolymers exhibited a narrow molar mass distribution with a reasonably low dispersity (Đ <1.2). Thermally, the ABA triblock copolymers were slightly more stable than their respective homopolymers, the extrapolated onset temperature of major mass loss was at Td >370 °C (compared to Td of the homopolymers ≈350 °C) (Fig. , Table ). Again, a minor weight loss step corresponding the loss of the Boc group is observed at around 220 °C. In comparison to the homopolymers, this first mass loss step is less pronounced because of the lower relative weight percentage.