Polymer–solvent interactions as a tool to engineer material properties

Polymer single crystals are used as templates to synthesize polymer brushes, known as the "polymer-single-crystal-assisted-grafting-to" (PSCAGT) approach. Polymer brushes with controlled grafting densities and spatial tethering locations are demonstrated. Previous works focused on solution crystallization, which involves large amounts of organic solvent, and the grafting density can only be tuned by varying crystallization temperatures. In this work, thin film crystallization is utilized to fabricate 2D polymer crystals on flat surfaces. Subsequent chemical tethering leads to polymer brushes that retain the original morphology of the crystals with high fidelity. Furthermore, it is shown that the grafting density of the polymer brushes fabricated using this method depends on the chain end distribution on the top/bottom surfaces of the crystal, which can be facilely controlled by annealing the crystals at various nonsolvent media. This work broadens the scope of the PSCAGT method and provides a new route to achieve polymer brushes with controlled structures.

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Fabrication of Surface Polymer Brushes Via Thin Film Crystallization and Solvent Annealing

Wilk

Chancellor

Mei

et al. 2023

Macromol. Rapid Commun.

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Polymer–solvent interactions as a tool to engineer material properties

Abstract: Multi-dynamic polymers exhibit improved and unexpected properties compared to materials with only one class of dynamic bond due to co-operative self-assembly. To tune the properties of multi-dynamic materials an understanding...

Cited by 1 publication

References 28 publications

Fabrication of Surface Polymer Brushes Via Thin Film Crystallization and Solvent Annealing

Fabrication of Surface Polymer Brushes Via Thin Film Crystallization and Solvent Annealing

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