Nylon-6 (N6) composites were incorporated with cellulose nanocrystals (CNCs) extracted from sugarcane bagasse via solvent dissolution. The effect of the CNC content was estimated at 0, 1, 3, 5 and 7 wt%. Atomic force microscopy images showed that the diameter and length of the obtained CNCs were 52.4 ± 14.8 and 400.38 ± 104.8 nm, respectively. Fourier transform infrared analysis illustrated the increasing dominant peak intensity of cellulose in the composites with a higher CNC content. X-ray diffraction and mechanical analysis determined the optimum improvement in crystallinity index and Young’s modulus in loading 1 wt% of CNCs, with values of 64.37 ± 0.12% and 675.27 MPa, respectively. The highest opacity value of the N6/CNC composites was 8.592 ± 0.062 for N6/CNC-7%. Moreover, CNCs decreased the thermal property of the N6 composites. These results suggested that CNCs have great potential to reinforce N6 polymers.

中文翻译：

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溶剂溶解法制备尼龙-6 /纤维素纳米晶复合膜

尼龙6（N6）复合材料与通过溶剂溶解从甘蔗渣中提取的纤维素纳米晶体（CNC）结合在一起。CNC含量的影响估计为0、1、3、5和7 wt％。原子力显微镜图像显示，所获得的CNC的直径和长度分别为52.4±14.8和400.38±104.8 nm。傅里叶变换红外分析表明，具有较高CNC含量的复合材料中纤维素的主峰强度增加。X射线衍射和力学分析确定了在装载1 wt％的CNC时，结晶度指数和杨氏模量的最佳改进，其值分别为64.37±0.12％和675.27 MPa。对于N6 / CNC-7％，N6 / CNC复合材料的最高不透明度值为8.592±0.062。此外，CNC降低了N6复合材料的热性能。