Use of a Poly(ethylene oxide) MacroRAFT Agent as Both a Stabilizer and a Control Agent in Styrene Polymerization in Aqueous Dispersed System

2009 ◽  
Vol 42 (4) ◽  
pp. 946-956 ◽  
Author(s):  
A. Martins dos Santos ◽  
T. Le Bris ◽  
C. Graillat ◽  
F. D’Agosto ◽  
M. Lansalot
Keyword(s):  
Ethylene Oxide ◽  
Control Agent ◽  
Styrene Polymerization ◽  
Dispersed System ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Amphiphilic Poly(ethylene oxide) Macromolecular RAFT Agent as a Stabilizer and Control Agent in ab Initio Batch Emulsion Polymerization

2008 ◽  
Vol 41 (12) ◽  
pp. 4065-4068 ◽  
Author(s):  
Jutta Rieger ◽  
François Stoffelbach ◽  
Chuong Bui ◽  
David Alaimo ◽  
Christine Jérôme ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Ab Initio ◽  
Emulsion Polymerization ◽  
Control Agent ◽  
Raft Agent ◽  
Poly Ethylene Oxide ◽  
Macromolecular Raft Agent ◽  
Poly Ethylene ◽  
And Control

The Structure of Radiation Cross-Linked Poly (ethylene oxide) Gels

1971 ◽  
Vol 29 ◽  
pp. 76-77
Author(s):  
C. E. Cluthe ◽  
G. G. Cocks
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Parallel Plate ◽  
Average Molecular Weight ◽  
Radical Reaction ◽  
Free Radical Reaction ◽  
Nitrogen Gas ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Initial Viscosity

Aqueous solutions of a 1 weight-per cent poly (ethylene oxide) (PEO) were degassed under vacuum, transferred to a parallel plate viscometer under a nitrogen gas blanket, and exposed to Co60 gamma radiation. The Co60 source was rated at 4000 curies, and the dose ratewas 3.8x105 rads/hr. The poly (ethylene oxide) employed in the irradiations had an initial viscosity average molecular weight of 2.1 x 106.The solutions were gelled by a free radical reaction with dosages ranging from 5x104 rads to 4.8x106 rads.

High-Frequency Heating of a Multiply Protonated Poly(ethylene oxide) Chain in a Vacuum

2020 ◽  
Vol 62 (5) ◽  
pp. 578-587
Author(s):  
S. A. Dubrovskii ◽  
N. K. Balabaev
Keyword(s):  
Ethylene Oxide ◽  
High Frequency ◽  
Poly Ethylene Oxide ◽  
Ethylene Oxide Chain ◽  
Poly Ethylene ◽  
Frequency Heating

Preparation of Organized Mesoporous Silica from Sodium Metasilicate Solutions in Alkaline Medium Using Nonionic Surfactants

2003 ◽  
Vol 68 (10) ◽  
pp. 2019-2031 ◽  
Author(s):  
Markéta Zukalová ◽  
Jiří Rathouský ◽  
Arnošt Zukal
Keyword(s):  
Mesoporous Silica ◽  
Ethylene Oxide ◽  
Sodium Metasilicate ◽  
Spherical Particles ◽  
Structure Directing Agent ◽  
Inorganic Species ◽  
Poly Ethylene Oxide ◽  
Acidic Conditions ◽  
Poly Ethylene ◽  
Hydrolysis Of

A new procedure has been developed, which is based on homogeneous precipitation of organized mesoporous silica from an aqueous solution of sodium metasilicate and a nonionic poly(ethylene oxide) surfactant serving as a structure-directing agent. The decrease in pH, which induces the polycondensation of silica, is achieved by hydrolysis of ethyl acetate. Owing to the complexation of Na+ cations by poly(ethylene oxide) segments, assembling of the mesostructure appears to occur under electrostatic control by the S0Na+I- pathway, where S0 and I- are surfactant and inorganic species, respectively. As the complexation of Na+ cations causes extended conformation of poly(ethylene oxide) segments, the pore size and pore volume of organized mesoporous silica increase in comparison with materials prepared under neutral or acidic conditions. The assembling of particles can be fully separated from their solidification, which results in the formation of highly regular spherical particles of mesoporous silica.

Effect of pressure on hydrodynamic properties of poly(ethylene oxide) in deuterated and in non-deuterated solvents

Polymer ◽  
1991 ◽  
Vol 32 (5) ◽  
pp. 904-908 ◽  
Author(s):  
B. Nyström ◽  
K. Olafsen ◽  
J. Roots
Keyword(s):  
Ethylene Oxide ◽  
Hydrodynamic Properties ◽  
Effect Of Pressure ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Interactions between fenoprofen sodium and poly (ethylene oxide)

1998 ◽  
Vol 46 (1) ◽  
pp. 51-59 ◽  
Author(s):  
T Rades ◽  
C.C Mueller-Goymann
Keyword(s):  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Boosting CO2 transport of poly (ethylene oxide) membranes by hollow Rubik-like “expressway” channels with anion pillared hybrid ultramicroporous materials

2021 ◽  
pp. 130845
Author(s):  
Niu Liu ◽  
Jun Cheng ◽  
Leiqing Hu ◽  
Wen Hou ◽  
Xiao Yang ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Co2 Transport ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Oxide Membranes
Sign in / Sign up

Export Citation Format

Share Document