Step-growth polymerization Chain-growth polymerization
{"Image DocumentName": "Step-growth polymerization Chain-growth polymerization", "Image ImageDescription": "Differences between step-growth polymerization and chain-growth polymerization. Step-growth polymerization. Chain-growth polymerization. Growth throughout matrix. Growth by addition of monomer only at one end of chain. Rapid loss of monomer early in the reaction. Some monomer remains even at long reaction times. Same mechanism throughout. Different mechanisms operate at different stages of reaction (i.e. Initiation, propagation and termination) Average molecular weight increases slowly at low conversion and high extents of reaction are required to obtain high chain length. Molar mass of backbone chain increases rapidly at early stage and remains approximately the same throughout the polymerization. Ends remain active (no termination) Chains not active after termination. No initiator necessary. Initiator required.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}