We have prepared hydrogen bonded supramolecular polymer melts via modification of soft non-polar hydrogenated poly(ethylene-co-butylene) polymer (HLBH-P 3000) termini groups with hydrogen bonding motifs. These interactions enhance the elastic properties of the material via supramolecular binding in the polymer matrix and result in a structurally dynamic supramolecular polymer network, whose properties could be temperature modulated. We have throughly studied the mechanical properties of the prepared material using oscillatory rheology. This supramolecular polymer exhibited interesting temperature-modulated behavior not seen in the previously reported systems. Namely, it had two switchable states with remarkably different mechanical properties that were achieved via reassembly of hydrogen bonding domains. To enhance the optical properties of these materials, we prepared a series of these supramolecular polymers with different organic and inorganic dyes incorporated into the polymer matrix. Introduction of the chromophores created materials that were capable of self-healing upon external light radiation. The healing rate was controlled by the light radiation power, time, and location as well as the nature of supramolecular interactions in the polymers.

Hydrogen bonding supramolecular polymers with temperature controlled switchable mechanical properties reveal photoheable effects

253rd National Meeting (2017)

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