PMSE Alshakim Nelson, Matthew Becker, Sergio Granados-Focil, Christopher Stafford  Sunday, March 16, 2014 

46 - Supramolecular elastomers based on oligo(β-alanine) crosslinking platform

Li Jia,, Department of Polymer Science, The University of Akron, Akron, Ohio 44325, United States

Poly(β-alanine), or Nylon 3, is a highly crystalline polymer that decomposes before it melts and only dissolves in acids. In the crystalline state, neighboring poly(β-alanine) chains associate via hydrogen bonds to result in supramolecular sheets reminiscent of the β-structure of natural peptides (Figure 1).

The sheets stack over each other to constitute the 3rddimension of the

crystal structure. Very short oligo(β-alanine)s retain the strong propensity of forming β-sheet-type supramolecular structure and can melt below the decomposition temperature. The high polarity of the molecular structure and the high propensity of self-association suggest that oligo(β-alanine)s would readily phase-separate from hydrocarbon polymers and serve as physical crosslinkers when covalently attached to the hydrocarbon polymers.

In this presentation, we will report our preliminary results in exploring the supramolecular crosslinking platform. The structures of the thermoplastic elastomers at the molecular, supramolecular, and morphological levels will be discussed. The mechanical and dynamic mechanical properties will be described. Application of the thermoplastic elastomers as fillers in thermoset rubbers will be also be discussed.

Sunday, March 16, 2014 02:30 PM
Supramolecular Assembly and Gelation in Organic Solvents (01:30 PM - 05:20 PM)
Location: Hyatt Regency Dallas
Room: Reunion Blrm A


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