Anionic Living Polymerization of Macromonomers:  Preparation of (A)n-star-(B)1Star Block Copolymers and Some Properties of the Products Obtained

2007 ◽  
Vol 40 (3) ◽  
pp. 429-437 ◽  
Author(s):  
Kazunori Se ◽  
Yasunari Hayashino
Keyword(s):  
Block Copolymers ◽  
Living Polymerization

Regioselective living polymerization of allylcyclohexane and precise synthesis of hydrocarbon block copolymers with cyclic units

2018 ◽  
Vol 9 (9) ◽  
pp. 1109-1115 ◽  
Author(s):  
Jie Gao ◽  
Zonghang Ying ◽  
Liu Zhong ◽  
Heng Liao ◽  
Haiyang Gao ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Nickel Catalyst ◽  
Living Polymerization ◽  
Sequential Monomer Addition

Regioselective living polymerization of allylcyclohexane was catalyzed by a bulky α-diimine nickel catalyst. Well-defined hydrocarbon block copolymers with cyclic units were constructed by sequential monomer addition.

Supramolecular Block Copolymers by Seeded Living Polymerization of Perylene Bisimides

2019 ◽  
Vol 141 (30) ◽  
pp. 12044-12054 ◽  
Author(s):  
Wolfgang Wagner ◽  
Marius Wehner ◽  
Vladimir Stepanenko ◽  
Frank Würthner
Keyword(s):  
Block Copolymers ◽  
Living Polymerization ◽  
Perylene Bisimides

Recent Advances in Thermoplastic Elastomer Synthesis

1991 ◽  
Vol 64 (3) ◽  
pp. 450-468 ◽  
Author(s):  
Roderic P. Quirk ◽  
Jungahn Kim
Keyword(s):  
Block Copolymers ◽  
Anionic Polymerization ◽  
Structural Control ◽  
Thermoplastic Elastomer ◽  
Living Polymerization ◽  
Controlled Synthesis ◽  
Living Anionic Polymerization ◽  
Recent Advances ◽  
Living Polymerizations

Abstract A variety of living polymerization systems are now available for the controlled synthesis of block copolymers. Although living anionic polymerization remains as the method of choice for the most precise structural control, living polymerizations proceeding via other mechanistic types provide extremely useful extensions of this methodology to a wider variety of monomers.

Palladium-Complex-Promoted Living Polymerization of 2-Alkoxy-1-methylenecyclopropanes. Synthesis of Linear and Cyclic Polymers and Block Copolymers Having Alkoxy and Vinylidene Groups

2006 ◽  
Vol 25 (17) ◽  
pp. 4062-4064 ◽  
Author(s):  
Daisuke Takeuchi ◽  
Akihisa Inoue ◽  
Kohtaro Osakada ◽  
Minoru Kobayashi ◽  
Kentaro Yamaguchi
Keyword(s):  
Block Copolymers ◽  
Palladium Complex ◽  
Living Polymerization ◽  
Cyclic Polymers

Novel Thermoplastic Elastomers: Star-Blocks Consisting of Eight Poly(Styrene-b-Isobutylene) Arms Radiating from a Calix[8]Arene Core

1998 ◽  
Vol 71 (4) ◽  
pp. 708-721 ◽  
Author(s):  
Sunny Jacob ◽  
Istvan Majoros ◽  
Joseph P. Kennedy
Keyword(s):  
Nmr Spectroscopy ◽  
Block Copolymers ◽  
Rheological Properties ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
High Strength ◽  
Living Polymerization ◽  
Thermoplastic Elastomers ◽  
Molecular Weights ◽  
Star Block Copolymers

Abstract The first synthesis by a core-first strategy of novel star-block copolymers consisting of eight poly(styrene-b-isobutylene) (PSt-b-PIB) arms radiating from a calix[8]arene core is described. An octafunctional methoxy calix[8]arene derivative was used to initiate the living polymerization of isobutylene (IB) to desirable molecular weights, then styrene (St) was added to obtain the sought star-blocks. Molecular weights and PSt contents were determined by triple-detector GPC and 1H NMR spectroscopy. Star-block thermoplastic elastomers containing 17–32% PSt showed high strength and elongation (up to ∼26 MPa and >500%) and relatively low melt viscosities. The mechanical and rheological properties of these star-blocks are superior to those of linear PSt-b-PIB-b-PSt triblocks. PIB-based thermoplastic elastomers may be of use as novel biomaterials.

Sign in / Sign up

Export Citation Format

Share Document