Exploration of biodegradable materials for conventional application has taken a rising interest across the world. The presented work primarily focused on exploring the effectiveness of isolated CNCs from marine de-oiled green algae biomass residue (Dunaliella tertiolecta) in synthesized poly(ɛ-caprolactone) (PCL). The washed algae biomass residue (WABR) and algae derived CNCs were explored as two different bio-fillers incorporated into PCL for comparison and development of biodegradable and flexible bio-composites with varying bio-filler loading. FTIR, XRD, TGA, UTM, DSC, POM, and SAXS characterized the developed PCL/WABR and PCL/CNC bio-composites. Improved thermal stability was observed in PCL/CNC bio-composites by ~10 °C rise. Besides, increased modulus of 18.38 MPa and tensile strength was obtained in PCL/CNC/1 bio-composites. However, the isothermal kinetics study (at 45 °C) revealed the reduction in the degree of crystallinity of bio-composites, and the axialite formation was visualized via POM. Moreover, CNCs was found as an excellent nucleating agent and effective bio-filler as compared to WABR.

探索用于常规应用的可生物降解材料在世界范围内引起了越来越大的兴趣。所提出的工作主要集中在探索从海洋脱油绿藻生物质残渣中分离CNCs 的有效性( Dunaliella tertiolecta) 在合成的聚 (ɛ-己内酯) (PCL) 中。将洗涤后的藻类生物质残留物 (WABR) 和藻类衍生的 CNC 作为两种不同的生物填料并入 PCL 进行了探索，以比较和开发具有不同生物填料负载的可生物降解和柔性生物复合材料。FTIR、XRD、TGA、UTM、DSC、POM 和 SAXS 表征了开发的 PCL/WABR 和 PCL/CNC 生物复合材料。在 PCL/CNC 生物复合材料中观察到热稳定性提高约 10 °C。此外，在 PCL/CNC/1 生物复合材料中获得了 18.38 MPa 的增加的模量和拉伸强度。然而，等温动力学研究（在 45 °C 下）显示生物复合材料的结晶度降低，轴岩的形成通过可视化聚甲醛。此外，与 WABR 相比，CNC 被发现是一种出色的成核剂和有效的生物填料。