graft copolymer meaning in Hindi

Examples

1. There are many different approaches to synthesizing graft copolymers.
2. The material may be a blend or a two-phase block or graft copolymer.
3. While there exist others ( alternating copolymers, graft copolymers, and stereoblock copolymers ), these three are more common in the scientific literature.
4. The formation of the graft copolymer originates from the coupling reaction between the functional backbone and the end-groups of the branches that are reactive.
5. As the reaction proceeds, the concentrations of monomer to macromonomer change causing random placement of branches and formation of graft copolymers with different number of branches.
6. High viscosity, thermal stability, biodegradability, good film forming properties and water absorption capacity are some of the properties shown by the graft copolymers of starch.
7. Starch-graft copolymers are synthesized by the free radical initiated reaction of starch with acrylic monomers in presence of a free radical initiator such as ceric ammonium nitrate.
8. These addition fragmentation chain transfer agents do form graft copolymers with styrenic and acrylate species however they do so by first forming block copolymers and then incorporating these block copolymers into the main polymer backbone.
9. These addition fragmentation chain transfer agents do form graft copolymers with yields of macromonomers are possible with methacrylate monomers, low yields are obtained when using catalytic chain transfer agents during the polymerization of acrylate and styrenic monomers.
10. Sherman and Smith received on April 13, 1971, for " invention of block and graft copolymers containing water-solvatable polar groups and fluoroaliphatic groups . " Sherman holds 13 patents with Smith in flurochemical polymers and polymerization processes.