TY  - JOUR
A1  - Noack, Sebastian
A1  - Schanzenbach, Dirk
A1  - Koetz, Joachim
A1  - Schlaad, Helmut
T1  - Polylactide-based amphiphilic block copolymers
BT  - Crystallization-Induced Self-Assembly and Stereocomplexation
JF  - Macromolecular rapid communications
N2  - The aqueous self-assembly behavior of a series of poly(ethylene glycol)-poly(l-/d-lactide) block copolymers and corresponding stereocomplexes is examined by differential scanning calorimetry, dynamic light scattering, and transmission electron microscopy. Block copolymers assemble into spherical micelles and worm-like aggregates at room temperature, whereby the fraction of the latter seemingly increases with decreasing lactide weight fraction or hydrophobicity. The formation of the worm-like aggregates arises from the crystallization of the polylactide by which the spherical micelles become colloidally unstable and fuse epitaxically with other micelles. The self-assembly behavior of the stereocomplex aggregates is found to be different from that of the block copolymers, resulting in rather irregular-shaped clusters of spherical micelles and pearl-necklace-like structures.
KW  - crystallization
KW  - polylactide
KW  - self-assembly
KW  - stereocomplexation
Y1  - 2018
U6  - https://doi.org/10.1002/marc.201800639
SN  - 1022-1336
SN  - 1521-3927
VL  - 40
IS  - 1
PB  - Wiley-VCH
CY  - Weinheim
ER  -