Next Article in Journal
Cyclodextrin Monomers and Polymers for Drug Activity Enhancement
Next Article in Special Issue
Precise Tuning of Polymeric Fiber Dimensions to Enhance the Mechanical Properties of Alginate Hydrogel Matrices
Previous Article in Journal
Interfacial Binding Energy between Calcium-Silicate-Hydrates and Epoxy Resin: A Molecular Dynamics Study
Previous Article in Special Issue
Patchy Micelles with a Crystalline Core: Self-Assembly Concepts, Properties, and Applications
Article

Self-Seeding Procedure for Obtaining Stacked Block Copolymer Lamellar Crystals in Solution

1
Physikalisches Institut, Albert-Ludwigs-Universität, 79104 Freiburg, Germany
2
Freiburg Materials Research Center (FMF), Albert-Ludwigs-Universität, 79104 Freiburg, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Holger Schmalz
Polymers 2021, 13(11), 1676; https://doi.org/10.3390/polym13111676
Received: 4 May 2021 / Revised: 17 May 2021 / Accepted: 18 May 2021 / Published: 21 May 2021
We examined the formation of self-seeded platelet-like crystals from polystyrene-block-polyethylene oxide (PS-b-PEO) diblock copolymers in toluene as a function of polymer concentration (c), crystallization temperature (TC), and self-seeding temperature (TSS). We showed that the number (N) of platelet-like crystals and their mean lateral size (L) can be controlled through a self-seeding procedure. As (homogeneous) nucleation was circumvented by the self-seeding procedure, N did not depend on TC. N increased linearly with c and decayed exponentially with TSS but was not affected significantly by the time the sample was kept at TSS. The solubility limit of PS-b-PEO in toluene (c*), which was derived from the linear extrapolation of Nc 0 and from the total deposited mass of the platelets per area (MCc0), depended on TC. We have also demonstrated that at low N, stacks consisting of a (large) number (η) of uniquely oriented lamellae can be achieved. At a given TC, L was controlled by N and η as well as by c=cc. Thus, besides being able to predict size and number of platelet-like crystals, the self-seeding procedure also allowed control of the number of stacked lamellae in these crystals. View Full-Text
Keywords: crystal morphologies; polymer crystallization; nucleation mechanism; scaling relations crystal morphologies; polymer crystallization; nucleation mechanism; scaling relations
Show Figures

Figure 1

MDPI and ACS Style

Bessif, B.; Pfohl, T.; Reiter, G. Self-Seeding Procedure for Obtaining Stacked Block Copolymer Lamellar Crystals in Solution. Polymers 2021, 13, 1676. https://doi.org/10.3390/polym13111676

AMA Style

Bessif B, Pfohl T, Reiter G. Self-Seeding Procedure for Obtaining Stacked Block Copolymer Lamellar Crystals in Solution. Polymers. 2021; 13(11):1676. https://doi.org/10.3390/polym13111676

Chicago/Turabian Style

Bessif, Brahim, Thomas Pfohl, and Günter Reiter. 2021. "Self-Seeding Procedure for Obtaining Stacked Block Copolymer Lamellar Crystals in Solution" Polymers 13, no. 11: 1676. https://doi.org/10.3390/polym13111676

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop