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Self-Assembly Investigations of Sulfonated Poly(methyl methacrylate-block-styrene) Diblock Copolymer Thin Films

Advances in Polymer Technology Journal

Poly(methyl methacrylate-block-styrene) block copolymers (BCs) of low dispersity were selectively sulfonated on the styrenic segment. Several combinations of degree of polymerization and volume fraction of each block were investigated to access different self-assembled morphologies. Thin films of the sulfonated block copolymers were prepared by spin-coating and exposed to solvent vapor (SVA) or thermal annealing (TA) to reach equilibrium morphologies. Atomic force microscopy (AFM) was employed for characterizing the films, which exhibited a variety of nanometric equilibrium and nonequilibrium morphologies. Highly sulfonated samples revealed the formation of a honeycomb-like morphology obtained in solution rather than by the self-assembly of the BC in the solid state. The described morphologies may be employed in applications such as templates for nanomanufacturing and as cover and binder of catalytic particles in fuel cells.

For details: Self-Assembly Investigations of Sulfonated Poly(methyl methacrylate-block-styrene) Diblock Copolymer Thin Films

Claudia Piñón-Balderrama 1, César Leyva-Porras 2, Roberto Olayo-Valles 3, Javier Revilla-Vázquez 4, Ulrich S. Schubert 5,6, Carlos Guerrero-Sanchez 5,6, and José Bonilla-Cruz 1

1 Advanced Functional Materials & Nanotechnology Group, Polymer Science and Nanotechnology Lab, Centro de Investigación en Materiales Avanzados S.C. (CIMAV-Unidad Monterrey), Av. Alianza Norte # 202, PIIT, Autopista Monterrey- Aeropuerto Km 10, C.P. 66628, Apodaca, NL, Mexico

2 Centro de Investigación en Materiales Avanzados S. C. (CIMAV), Miguel de Cervantes # 120, Complejo Industrial Chihuahua, C.P. 31136, Chihuahua, Chih, Mexico

3 Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, C.P. 09340, Mexico City, Mexico

4 Departamento de Ingeniería y Tecnología, División Ciencias Químicas, Facultad de Estudios Superiores Cuautitlán-UNAM, Av. Primero de Mayo s/n Cuautitlán Izcalli, C.P. 54740, Estado de México, Mexico

5 Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany

6 Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany

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Advances in Polymer Technology

Volume 2019, Article ID 4375838, 11 pages

https://doi.org/10.1155/2019/4375838

For details please contact [email protected]

November 1, 2019