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Total result(s) found: 12
  • Viscosity of Ring Polymer Melts
    R.Pasquino, C. Vasilakopoulos, Y.C. Jeong, H. Lee, S. Rogers, G. Sakellariou, J. Allgaier, A. Takano, A. R. Brás, T.  Chang, S. Gooßen, W. Pyckhout-Hintzen, A. Wischnewski, Nikos Hadjichristidis, D. Richter, M. Rubinstein, D. Vlassopoulos
    ACS Macro Lett. 2013, 2, 874−878​​​​​
Keywords:
Linear Rheolodgy, Polyisoprene, Polystyrene, Polyethylenoxides,
  • Start-up and relaxation of well-characterized comb polymers in simple shear
    F. Snijkers, D. Vlassopoulos, H. Lee, J. Yang, T. Chang, P. Driva, and N. Hadjichristidis
    Journal of Rheology, Volume 57, Issue 4, Pages 1079-1100, (2013)
Keywords:
Comb polymers, Cone partitioned-plate, Entanglements, Shear flow, Start-up stress, Stress relaxation
  • ​Uniaxial extensional rheology of well-characterized comb polymers
    H. Lentzakis, D. Vlassopoulos, D.J. Read, H. Lee, T. Chang, P. Driva and N. Hadjichristidis
    Journal of Rheology, Volume 57, Issue 2, Pages 605-625, (2013)
Keywords:
Comb polymer, Dynamic dilution, Strain hardening, Stretch time, Uniaxial extension
  • Viscosity of ring polymer melts
    R. Pasquino, T.C. Vasilakopoulos, Y.C. Jeong, H. Lee, S. Rogers, G. Sakellariou,  J. Allgaier, A. Takano, A.R. Bras, T. Chang, S. Goossen, W. Pyckhout-Hintzen, A. Wischnewski, N. Hadjichristidis, D. Richter, M. Rubinstein, D. Vlassopoulos
    ACS Macro Letters, Volume 2, Issue 10, Pages 874-878, (2013)​​
Keywords:
Ring polymer melts
  • Microscopic relaxation processes in branched-linear polymer blends by rheo-SANS
    N. Ruocco, L. Dahbi, P. Driva, N. Hadjichristidis, J. Allgaier, A. Radulescu, M. Sharp, P. Lindner, E. Straube, W. Pyckhout-Hintzen, D. Richter
    Macromolecules, Volume 46, Issue 22, Pages 9122-9133, (2013)
Keywords:
Dynamic dilution, Equilibration time, Macroscopic flow, Random phase approximations, Relaxation time spectrum, Scattering data, Second generation, Sensitive probe
  • Synthesis and characterization of well-defined regular star polyisoprenes with 3, 4, 6 and 8 arms
    K.R. Ratkanthwar, N. Hadjichristidis, P. Zubaidha
    Chemistry Journal, Volume 3 Issue 3, (2013)
Keywords:
High vacuum techniques, Star-branched polymers, Star polyisoprene, SEC
  • Anionic polymerization and polyhomologation: an ideal combination to synthesize polyethylene-based block copolymers
    H. Zhang, N. Alkayal, Y. Gnanou, N. Hadjichristidis 
    Chemical Communications, Volume 49, Issue 79, Pages 8952-8954, (2013)
Keywords:
Copolymer, Polyethylene derivative
  • Synthesis and characterization of an exact comb polyisoprene with three branches having the middle branch twice the molecular weight of the other two identical external branches
    K. Ratkanthwar, N. Hadjichristidis, S. L.ee, T. Chang, Z. Pudukulathan, D. Vlassopoulos
    Polymer Chemistry, Volume 4, Issue 23, Pages 5645-5655, (2013)
Keywords:
Anionic site, Chlorosilanes, Double bonds, High vacuum, Synthesis and characterizations, Synthetic approach, Temperature gradient interaction chromatography, Three-branch
  • ​Influence of (1,3-phenylene)bis(3-methyl-1-phenyl pentylidene)dilithium initiator concentration on the modality of polybutadiene
    T.C. Vasilakopoulos and N. Hadjichristidis
    Journal of Polymer Science, Part A: Polymer Chemistry, Volume 51, Issue 4, Pages 824-835, (2013)
Keywords:
Anionic polymerization, bimodality, Ddilithium initiator concentration, Gel permeation chromatography (GPC), High vacuum techniques, Lithium s-butoxide, Polybutadiene
  • Morphologies of ABC triblock terpolymer melts containing poly(cyclohexadiene): effects of conformational asymmetry
    R. Kumar , S.W. Sides , M. Goswami , B.G. Sumpter, K. Hong , X. Wu, T.P. Russell, S.P. Gido , K. Misichronis, S. Rangou, A. Avgeropoulos, T. Tsoukatos, N. Hadjichristidis, F.L. Beyer and J.W. Mays
    Langmuir, Volume 29, Issue 6, Pages 1995-2006, (2013)
Keywords:
ABC triblock, Cyclohexadienes, Group contribution method, Poly (1 , 3cyclohexadiene), Repulsive interactions, Self-consistent-field theory, Small angle X-ray scattering, Solubility parameters, Transmission electron microscopy (TEM), Triblock terpolymers
  • Viscoelasticity, nonlinear shear start-up, and relaxation of entangled star polymers
    F. Snijkers, K. Ratkanthwar, D. Vlassopoulos and N. Hadjichristidis
    Macromolecules, Volume 46, Issue 14, Pages 5702-5713, (2013)
Keywords:
Convective constraint release, Entangled polymers, Entangled star polymers, Experimental errors, Linear relaxations, Linear viscoelastic, Steady shear viscosity, Weissenberg number
  • A facile metal-free grafting-from route from acrylamide-based substrate toward complex macromolecular combs
    J. Zhao, H. Alamri and N. Hadjichristidis
    Chemical Communications, Volume 49, Issue 63, Pages 7079-7081, (2013)
Keywords:
1,2 epoxybutane, Acetic Acid, Acrylamide, Amide, Carbonic acid derivative, Copolymer, Cyclopropane derivative, Epoxide, Ester, Ether, Ethylene oxide, Hydroxyl group, Lactam, Macrogol, Metal, Methacrylic acid, Monomer, Nitroxide, Oxide, Polyacrylamide