Design of melt-recyclable poly(ε-caprolactone)-based supramolecular shape-memory nanocomposites.

ABSTRACT: A novel poly(epsilon-caprolactone) (PCL) supramolecular network exhibiting shape-memory behavior was successfully constructed with pendant UPy units that are highly able to dimerize. The dynamic network was obtained by a simple and versatile strategy consisting of chain-extension reaction between α,ω-dihydroxyoligoPCL and hydroxylated UPy units in the presence of hexamethylene diisocyanate as a coupling agent and further intermolecular dimerization of the UPy along the polyurethane backbone. ¹H NMR analyses confirmed the dynamic features of the system, and DMTA in tensile mode was investigated to assess the SMP properties. Recyclability was also assessed by taking advantage of these supramolecular networks. Further addition of cellulose nanocrystals into the polymer network enab

SUBMITTER: Pilate F 

PROVIDER: S-EPMC9083248 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature