Crystallization in polyamide 11 (PA11) / cellulose nanocrystals (CNC) composites is characterized using fast scanning chip calorimetry and differential scanning calorimetry. The CNC nanocrystals nucleate and enhance crystallization in the heterogeneous regime, between 95 and 155 °C. The nanocrystals had no effect on isothermal crystallization below 95 °C, confirming that the bimodal isothermal halftime curve for PA11 is attributed to the prominence of homogeneous nucleation at high supercooling. Cooling studies indicate the CNC influence the non-isothermal crystallization behavior, particularly at higher cooling rates. Results are discussed in light of CNC particle dispersion as observed in environmental scanning electron microscopy (ESEM) and related mechanical properties.

Crystallization of polyamide 11 / cellulose nanocrystalline composites across a broad range of supercooling

256th National Meeting (2018)

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