Abstract
In this work two biodegradable poly(ethylene adipate) (PEA) based nanocomposites containing the same low loading of cellulose nanocrystals (CNC) and carboxyl-functionalized multi-walled carbon nanotubes (f-MWCNT) were prepared through a solution and casting method, respectively. The crystallization behavior and dynamic mechanical properties of neat PEA and the nanocomposites were studied in detail and compared with each other. Both CNC and f-MWCNT finely dispersed in PEA matrix. The addition of CNC or f-MWCNT not only increased the melt crystallization peak temperature but also decreased the crystallization half-time of PEA, suggesting that the crystallization of PEA was apparently enhanced by CNC or f-MWCNT due to the heterogeneous nucleating agent effect. Both CNC and f-MWCNT increased the storage modulus and glass transition temperature of PEA matrix in the nanocomposites. As a nucleating agent, f-MWCNT was more efficient than CNC, while CNC was stronger than f-MWCNT as a reinforcer.
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