منابع مشابه
Intrinsic Viscosity Of
Data are presented to show that the intrinsic viscosity of hyaluronic acid elaborated into the culture medium supporting human connective-tissue cells in vitro is modulated in a systematic manner by the cells. Intrinsic viscosity is reduced during rapid cell division and by hydrocortisone treatment. Conversely, the initial lag phase of culture growth and colchicine t reatment are attended by fo...
متن کاملElongational Viscosity of Monodisperse and Bidisperse Polystyrene Melts
The startup and steady uniaxial elongational viscosity have been measured for two monodisperse polystyrene melts with molecular weights of 52 kg/mole and 103 kg/mole, and for three bidisperse polystyrene melts. The monodisperse melts show a maximum in the steady elongational viscosity vs. the elongational rate, ǫ̇, of about two times 3η0 whereas the bidisperse melts have a maximum of up to a fac...
متن کاملVarious polystyrene topologies built from tailored cyclic polystyrene via CuAAC reactions.
Rapid CuAAC cross-coupling reactions catalyzed by CuBr/PMDETA in toluene afforded complex architectures from functional polymeric cyclic blocks. Various topologies (from paddle-like to 3-arm stars) rapidly formed with high conversion at 25 °C. Remarkably, this approach overcame significant steric hindrance linking polymeric cyclic structures with high coupling efficiency.
متن کاملA simple model for the anomalous intrinsic viscosity of dendrimers
The intrinsic viscosity of dendrimers in solution shows several anomalous behaviors that have hitherto not been explained within the existing theoretical frameworks of either Zimm or Rouse. Here we propose a simple two-zone model based on the radial segmental density profile of the dendrimers and combine a non-draining core with a free-draining outer region description, to arrive at a simple fo...
متن کاملIntrinsic viscosity of SiO2, Al2O3 and TiO2 aqueous suspensions.
The viscosity of dilute suspensions of several metal oxides (SiO2, Al2O3 and TiO2) was measured at different pH values. The intrinsic viscosity, [eta], was derived from the concentration dependence of the viscosity. This magnitude was pH-dependent. A correlation with the shape of the kinetic unity has been proposed.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Macromolecules
سال: 2017
ISSN: 0024-9297,1520-5835
DOI: 10.1021/acs.macromol.7b01511