Open AccessCover Image, Volume 54, Issue 19
Publication year - 2016
Publication title -
journal of polymer science part a: polymer chemistry
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.768
H-Index - 152
eISSN - 1099-0518
pISSN - 0887-624X
DOI - 10.1002/pola.28250
Subject(s) - cover (algebra) , copolymer , polymer science , polystyrene , polymer , block (permutation group theory) , polymer chemistry , volume (thermodynamics) , ethylene , materials science , computer science , chemistry , catalysis , physics , combinatorics , mathematics , composite material , organic chemistry , engineering , thermodynamics , mechanical engineering
On page 3110 (DOI: 10.1002/pola.28212 ), Bun Yeoul Lee and colleagues discuss a sequential operation of coordinated and anionic polymerizations in one pot. Two representative bulk polymers, polyolefin and polystyrene, are molecularly connected to form block copolymers. Poly(ethylene‐ co ‐1‐octene) and PS chains are consecutively grown from a dialkylzinc site by using a coordination catalyst rac ‐[Me 2 Si(2‐methylindenyl)] 2 ZrCl 2 and an anionic initiator nBuLi · (tmeda), respectively. The figure shows thin film TEM images prepared using poly(ethylene/1‐octene)‐ block ‐PS and a corresponding blend of poly(ethylene/1‐octene) and PS (lower left).