材料科学
韧性
聚合物
聚丙烯
纳米颗粒
聚己内酯
己二酸
聚苯乙烯
聚合物混合物
化学工程
复合材料
高分子化学
共聚物
纳米技术
工程类
作者
Tairong Kuang,Hongxin Guo,Wei Li,Wenxian Liu,Wei Li,Mohammad Reza Saeb,Mohammad Vatankhah‐Varnosfaderani,Sergei S. Sheiko
标识
DOI:10.1002/advs.202407593
摘要
Abstract Mechanically robust and tough polymeric materials are in high demand for applications ranging from flexible electronics to aerospace. However, achieving both high toughness and strength in polymers remains a significant challenge due to their inherently contradictory nature. Here, a universal strategy for enhancing the toughness and strength of polymer blends using ligand‐modulated metal–organic framework (MOF) nanoparticles is presented, which are engineered to have adjustable hydrophilicity and lipophilicity by varying the types and ratios of ligands. Molecular dynamics (MD) simulations demonstrate that these nanoparticles can effectively regulate the interfaces between chemically distinct polymers based on their amphiphilicity. Remarkably, a mere 0.1 wt.% of MOF nanoparticles with optimized amphiphilicity (ML‐MOF (5:5) ) delivered ≈1.1‐ and ≈34.1‐fold increase in strength and toughness of poly (lactic acid) (PLA)/poly (butylene succinate) (PBS) blend, respectively. Moreover, these amphiphilicity‐tailorable MOF nanoparticles universally enhance the mechanical properties of various polymer blends, such as polypropylene (PP)/polyethylene (PE), PP/polystyrene (PS), PLA/poly (butylene adipate‐co‐terephthalate) (PBAT), and PLA/polycaprolactone (PCL)/PBS. This simple universal method offers significant potential for strengthening and toughening various polymer blends.
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