The mechanical properties of polymers are highly dependent on the inter and intramolecular interactions between the chains, resulting in different chain dynamics. Single chain polymer nanoparticles (SCPNs) are macromolecules in which strong intramolecular bonds can be added in different amounts, creating semi-permanent chain folding. On one hand, this chemical change leads to segment proximity, increasing Tg; and, on the other, they limit chain entanglement and movement, leading to the formation of plastic materials with completely different and more importantly, tunable mechanical response. SCPNs have structures equivalent to disordered proteins, and therefore, thermoplastic bulk materials assembled from SCPNs can present properties similar to protein-derived materials. By balancing the intra and intermolecular interactions, materials with improved properties such as concurrent high modulus and toughness, two properties which tend to be mutually exclusive in synthetic materials, can be obtained. In this presentation, we will show how changing the number of intramolecular cross-links, different properties are enhanced or degraded.

Bulk thermoplastics from intramolecular cross-linked polymers

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.