Highly cis-1,4-selective coordination polymerization of polar 2-(4-methoxyphenyl)- 1,3-butadiene and copolymerization with isoprene using a β-diketiminato yttrium bis(alkyl) complex
作者：Changguang Yao, Na Liu, Shiyu Long, Chunji Wu and Dongmei Cui
關(guān)鍵字：cis-1,4 selective; polar monomer; contact angle; monomer feed ratio
論文來源：期刊
具體來源：http://pubs.rsc.org/en/content/articlepdf/2016/py/c5py01801c
發(fā)表時(shí)間：2015年
The
unprecedented highly cis-1,4 selective (>99%) coordination–insertion
polymerization of the polar monomer 2-(4-methoxyphenyl)-1,3-butadiene (2-MOPB)
has been achieved using a β-diketiminato yttrium bis(alkyl) complex to afford a
hydrophilic plastic polymer P(2-MOPB) with a water contact angle of 87.7° and
glass transition temperature of 34.2 °C. The copolymerization of polar 2-MOPB
and non-polar isoprene has also been successfully realized for the first time
to produce a type of highly modified cis-1,4 polyisoprene with a wide range of
2-MOPB content (8.2%–88.5%). The composition was adjusted by regulating the
monomer feed ratio according to the copolymerization kinetics. Hydrogenation of
P(2-MOPB) provided an unusual alternating copolymer,
poly(4-methoxystyrene-alt-ethylene) that could not be obtained via any other
methods.
