A Biodegradable and Sustainable Polymeric Nanocomposite with Enhanced Mechanical Properties Based on Functional Heterocyclic Surfactant and Cellulose Nanofiber
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초록
내용
A series of biodegradable and sustainable polymeric nanocomposites (BSPNs) are prepared, and their mechanical properties are investigated in this study. Poly(butylene succinate) (PBS), functional heterocyclic surfactant (HCS), and cellulose nanofiber (CNF) are used as a matrix, a filler, and a dispersing agent, respectively. While CNFs are highly aggregated with each other due to the strong intermolecular hydrogen bonds, HCS induces effective exfoliation of aggregated CNFs as well as excellent dispersion of CNFs in the PBS matrix during the thermal blending process. The mechanical properties of the prepared BSPNs (PBS/HCS/CNF) outperform those of pure PBS and a PBS/CNF composite, which is attributed to a unique intermolecular interaction between PBS, CNF, and HCS. A computational simulation and FT-IR spectroscopy are also used to propose a mechanism for improved mechanical properties of BSPN in terms of its molecular structure.