Results 261 to 270 of about 50,873 (302)

Kinetics of living radical polymerization

Progress in Polymer Science, 2000
Abstract This review covers fundamental kinetic features of living radical polymerization (LRP). Theories on polymerization rate R p and polydispersity index (PDI) and experimental investigations into individual LRP systems are summarized. The presence of bimolecular termination, which is unavoidable in LRP as well as in conventional radical ...
Goto, A, Fukuda, T
openaire   +1 more source

Living carbocationic polymerization

Polymer Bulletin, 1988
Summary Rapid living carbocationic polymerization of p-methylstyrene pMeSt is readily induced by a variety of esters i.e., cumyl acetate (CumOAc), cumyl propionate (CumOPr), l(2,4,6trimethylphenyl)ethyl acetate (TMePhEtOAc) and l(4-methylphenyl)ethyl acetate (pMePhEtOAc) in the presence of BC~ in CHIC1 and C2HsCI solvents at -30 ~ and -50~ using both ...
Rudolf Faust, Joseph P. Kennedy
  +4 more sources

Living carbocationic polymerization

Polymer Bulletin, 1989
The living polymerization of isobutylene (IB) by the trans-2,5-diacetoxy-2,5-dimethyl-3-hexene (DiOAcDMH~)/BCla initiating system in 1,2-dichloroethane (DCE) in the -30 to +21~ range has been investigate~. Well-dEfined tert-chlorine terminated polyisobutylenes (--CI-PIB-Cl-) have b-~n obtained at suitably low IB and DiQAcDMH~ concentrations in the -30 ~
M. Zsuga, R. Faust, J. P. Kennedy
  +4 more sources

Toward Living Radical Polymerization

Accounts of Chemical Research, 2008
Radical polymerization is one of the most widely used processes for the commercial production of high-molecular-weight polymers. The main factors responsible for the preeminent position of radical polymerization are the ability to polymerize a wide array of monomers, tolerance of unprotected functionality in monomer and solvent, and compatibility with ...
Graeme, Moad, Ezio, Rizzardo, San H, Thang   +2 more
openaire   +2 more sources

Polyhomologation. A Living C1 Polymerization

Accounts of Chemical Research, 2010
The physical properties of synthetic macromolecules are strongly coupled to their molecular weight (MW), topology, and polydispersity index (PDI). Factors that contribute to their utility include the control of functionality at the macromolecule termini and copolymer composition.
Jun, Luo, Kenneth J, Shea
openaire   +2 more sources

Living carbocationic polymerization

Polymer Bulletin, 1986
Reaction en presence du complexe tetramethyl-2,4,4,6 heptane diacetate-2,6•BCl 3 dans CH 2 Cl 2 et C 2 H 5 Cl, entre −12 et −20 ...
A. Nagy, R. Faust, J.P. Kennedy
openaire   +2 more sources

Living Polymerization Methods

Science, 1991
Living polymerization techniques can be used to achieve a high degree of control over polymer chain architecture. Examples of the type of polymers that can be synthesized include block copolymers, comb-shaped polymers, multiarmed polymers, ladder polymers, and cyclic polymers.
openaire   +2 more sources

Controlled/“living” radical precipitation polymerization: A versatile polymerization technique for advanced functional polymers

European Polymer Journal, 2013
As an emerging new polymerization technique, controlled/“living” radical precipitation polymerization (CRPP) involves the introduction of controlled/“living” radical polymerization (CRP) mechanism into the precipitation polymerization system and can be ...
Huiqi Zhang
exaly   +2 more sources

Living anionic polymerization

Current Opinion in Solid State and Materials Science, 1999
For about 40 years living anionic polymerization has been the premier technique for the synthesis of model polymers of controlled architecture and narrow molecular weight distribution (MWD). Nowadays, despite the continuing development of new strategies for the synthesis of well-defined polymers and copolymers (e.g.
Kunlun Hong, David Uhrig, Jimmy W Mays
openaire   +1 more source

Living carbocationic polymerization

Polymer Bulletin, 1987
Reaction a −80°C dans CH 3 Cl/nC 6 H 14 .
G�bor Kasz�s, Judit Pusk�s, JosephP. Kennedy   +2 more
  +4 more sources