Chain Branching Low-density polyethylene: >soft and flimsy >highly branched,amorphous structure middle of a polyethylene chain growing end of a chain chain with 2 free radical terminated chain (1°free radical) in the middle H2C=CH2 growing branch CH-CH HHH H HHHHH 、=> new chain growing original chain at the branch point Chapter 26 6 Chain Branching • Low-density polyethylene: ➢soft and flimsy ➢highly branched, amorphous structure =>