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@ARTICLE{Mandlule:643154,
author = {Mandlule, Armando and Liu, Yue and Schwanz, Susanne and
Pieper, Yvonne and Scharf, Heike and Iskhakova, Kamila and
Coelho Conceicao, Andre Luiz and Wieland, D. C. Florian and
Zeller-Plumhoff, Berit and Toma, Francesca M. and Neffe,
Axel T.},
title = {{C}orrelative characterization of stereocomplex formation
in blends of aliphatic polyester {P}({PCL} m - b -{PLLA} n )
multiblock-copolymers and {PDLA}},
journal = {Materials advances},
volume = {x},
issn = {2633-5409},
address = {Cambridge},
publisher = {Royal Society of Chemistry},
reportid = {PUBDB-2026-00052},
pages = {10.1039.D5MA00886G},
year = {2026},
note = {cc-byonline first},
abstract = {In phase-separating multiblock copolymers it is a challenge
to quantify the relationship between molecular structure and
functional properties, yet this quantification is crucial
for processing and applications. Here, we describe the
molecular structure and phase behavior-properties
relationships for a modular system of
poly[(ε-caprolactone)-b-poly(L-lactide)] multiblock
copolymers with well-defined long/short block lengths and
their blends with poly(D-lactide) (PDLA) of varying lengths.
The formation of crystallite types and sizes as well as
absolute and relative crystallinities of PCL, PLA
homocrystallites (HC), and PLA stereocrystallites (SC) were
studied by DSC and WAXS, and visualized by TEM, POM, and
AFM. We reveal that SC formation occurs in blends containing
a ratio between 1 : 1 and 1 : 4 ratio of PDLA and
PLLA. In systems with much longer PCL than PLLA sequence
length (113 : 18), SC formation is inhibited. Blend
crystallinity was highest for a medium PDLA length. SC
formation is preferred over HC formation, and SCs act as
nucleation points for PCL crystallization. In our work the
segment length had a trend to correlate with crystallite
sizes. Tensile strength (from 0.5 to 8 MPa) and elongation
at break (from $10\%$ to $>750\%$ at room temperature) could
be increased simultaneously by allowing SC formation, which
in the studied blends correlated with low overall
crystallinity. Our study shows strategic polymer synthesis
and blending for the precise control of stereocomplex
formation and fine-tuning in high-performance PLA-based
materials. These findings support the knowledge-based choice
of blend composition and segment length to tailor versatile
materials with tunable mechanical and thermal properties.},
cin = {FS-PETRA-D / Hereon},
ddc = {540},
cid = {I:(DE-H253)FS-PETRA-D-20210408 /
I:(DE-H253)Hereon-20210428},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3},
experiment = {EXP:(DE-H253)P-P62-20221101},
typ = {PUB:(DE-HGF)16},
doi = {10.1039/D5MA00886G},
url = {https://bib-pubdb1.desy.de/record/643154},
}