If nanocomposite is synthesisedby physical mixing of metal nanoparticles and polymer so which bonding is present between them generally ?
Dear friend Rohit Kumar
The bonding between metal nanoparticles and polymer in a nanocomposite synthesized by physical mixing is generally **van der Waals forces**¹. Van der Waals forces are weak intermolecular forces that arise from the interaction between two or more atoms or molecules. They are the weakest of all intermolecular forces and are responsible for many properties of molecular compounds such as boiling and melting points, solubility, and surface tension (Polymer-supported metals and metal oxide nanoparticles........).
Source:
(1) Polymer-supported metals and metal oxide nanoparticles: synthesis .... https://link.springer.com/article/10.1007/s11051-011-0715-2.
(2) Green Synthesis of Metal, Metal Oxide Nanoparticles, and ... - Springer. https://link.springer.com/referenceworkentry/10.1007/978-3-319-68255-6_115.
(3) Metal Oxide Based Nanomaterials and Their Polymer Nanocomposites. https://www.sciencedirect.com/science/article/pii/B9780128146156000047.
(4) Nanomaterials: a review of synthesis methods, properties, recent .... https://pubs.rsc.org/en/content/articlelanding/2021/ma/d0ma00807a.
(5) 8 - Polymer Composites With Metal Nanoparticles - ScienceDirect. https://www.sciencedirect.com/science/article/pii/B9780128140642000081.
(6) Metal nanoparticles synthesis: An overview on methods of preparation .... https://www.sciencedirect.com/science/article/pii/S1773224718308189.
@ Rohit, beside van der Walls forces it may also be covalent and hydrogen bonds.