Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
The most common backbone is made of crosslinked polystyrene, polyacrylate esters and polymethacrylate esters. These polymers are crosslinked with a poly-functional monomer to give insolubility in solvents, physical and chemical stability. Divinylbenzene is the most common crosslinking agent or crosslinker.
