Basic definition: Graft copolymer: A copolymer of a side chain of a polymer segment that is different from the main chain chemical structure on certain atoms of the polymer backbone, referred to as a graft copolymer, Such as grafted neoprene, SBS graft copolymer. Description: The so-called graft copolymerization refers to the macromolecule chain through the chemical bond to the appropriate branch or functional side of the reaction, the formation of the product is called graft copolymer. The properties of the graft copolymer are determined by the composition, structure, length and number of branches of the backbone and branches. The long branches of the grafted counterparts are similar to the blends, the branches are short and the larger grafts are similar to the random copolymers. By copolymerization, two different properties of the polymer can be grafted together to form a special graft. Therefore, the graft modification of the polymer has become a simple and effective method to expand the application of polymer and improve the performance of polymer materials.
The graft copolymerization reaction first forms an active graft site, and the various polymerization initiators or catalysts can provide the active species for graft copolymerization, and then produce the grafting point. The active site is at the end of the chain and the block copolymer will form after polymerization. The active site is in the middle of the segment and the graft copolymer is formed after polymerization.
Graft copolymer: A copolymer of a side chain of a polymer segment that is different from the main chain chemical structure on certain atoms of the polymer backbone.
