Deterministic Modeling of Degenerative RAFT Miniemulsion Polymerization Rate and Average Polymer Characteristics: Invalidity of Zero–One Nature at Higher Monomer Conversions

2018 ◽  
Vol 51 (23) ◽  
pp. 9442-9461 ◽  
Author(s):  
Dries J. G. Devlaminck ◽  
Paul H. M. Van Steenberge ◽  
Marie-Françoise Reyniers ◽  
Dagmar R. D’hooge
Keyword(s):  
Miniemulsion Polymerization ◽  
Polymerization Rate ◽  
Deterministic Modeling

Decrease of methyl methacrylate miniemulsion polymerization rate with incorporation of plant oils

2015 ◽  
Vol 118 (1) ◽  
pp. 93-103 ◽  
Author(s):  
Cristiane Costa ◽  
Manfred Wagner ◽  
Anna Musyanovych ◽  
Katharina Landfester ◽  
Claudia Sayer ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Miniemulsion Polymerization ◽  
Polymerization Rate ◽  
Plant Oils

scholarly journals On the inverse miniemulsion copolymerization and terpolymerization of acrylamide, N, N′-methylenebis(acrylamide) and methacrylic acid

2003 ◽  
Vol 1 (3) ◽  
pp. 291-304 ◽  
Author(s):  
I. Capek
Keyword(s):  
Methacrylic Acid ◽  
Particle Concentration ◽  
Continuous Medium ◽  
Miniemulsion Polymerization ◽  
Radical Copolymerization ◽  
Polymerization Rate ◽  
Microemulsion Polymerization ◽  
Free Radical Copolymerization ◽  
Rate Of Polymerization ◽  
Kinetics Of

AbstractThe kinetics of free-radical copolymerization and terpolymerization of acrylamide (AAm), N, N′-methylenebis(acrylamide) (MBA) and methacrylic acid (MA) in the inverse water/monomer/cyclohexane/Tween 85 miniemulsion was investigated. Polymerizable sterically-stable miniemulsions were formulated in cyclohexane as a continuous medium. Polymerizations are very fast and reach the final conversion within several minutes. The dependence of the polymerization rate vs. conversion is described by a curve with two nonstationary rate intervals. The maximum rate of polymerization slightly increases with increasing concentration of crosslinking monomer (MBA) and strongly decreases by the addition of MA. The rate of polymerization is inversely proportional to the 0.9th and 1.8th power of the particle concentration without and with MA, respectively. The number of polymer particles is inversely proportional to the 0.18th and 0.13th power of MBA concentration. The kinetic and colloidal parameters of the miniemulsion polymerization are discussed in terms of microemulsion polymerization model.

The effect of electrondonors on the polymerization kinetics of isoprene

1980 ◽  
Vol 45 (12) ◽  
pp. 3338-3346
Author(s):  
Miroslav Kašpar ◽  
Jiří Trekoval
Keyword(s):  
Induction Period ◽  
Ethyl Ether ◽  
Reaction Order ◽  
Propagation Rate ◽  
Reaction Scheme ◽  
Polymerization Kinetics ◽  
Polymerization Rate ◽  
Constant Concentration ◽  
Initial Concentration ◽  
Kinetics Of

The effect of small additions of 1-octene, butyl ethyl ether and triethylamine on the polymerization kinetics of isoprene (2-methyl-1,3-butadiene) in benzene initiated with butyllithium was investigated by employing the GLC analysis. The addition of 1-octane was reflected only in a shorter induction period of the reaction; the effect on the propagation rate was insignificant. With the increasing amount of butyl ethyl ether, the polymerization rate increases linearly, while the reaction order with respect to the concentration of triethylamine is variable and increases from 0.33 to 0.66 with the increasing concentration of the initiator. For a constant concentration of triethylamine, the reaction order with respect to the initial concentration of the initiator was found to vary considerably, reaching even negative values. A reaction scheme was suggested, taking into account the competition between two different solvates of alkyllithium.

scholarly journals Adhesive Resins with High Shelf-Life Stability Based on Tetra Unsaturated Monomers with Tertiary Amines Moieties

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1944
Author(s):  
Alma Antonia Pérez-Mondragón ◽  
Carlos Enrique Cuevas-Suárez ◽  
Jesús García-Serrano ◽  
Nayely Trejo-Carbajal ◽  
A. Lobo-Guerrero ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Double Bond ◽  
Shelf Life ◽  
Polymerization Rate ◽  
Tertiary Amines ◽  
Adhesive Systems ◽  
Double Bond Conversion ◽  
Initiator System ◽  
Ft Ir ◽  
Shelf Life Stability

This work reports the use of two monomers with two tertiary amines and four methacrylic (TTME) or acrylic (TTAC) terminal groups as co-initiators in the formulation of experimental resin adhesive systems. Both monomers were characterized by FT-IR and 1H NMR spectroscopies. The control adhesive was formulated with BisGMA, TEGDMA, HEMA, and the binary system CQ-EDAB as a photo-initiator system. For the experimental adhesives, the EDAB was completely replaced for the TTME or the TTAC monomers. The adhesives formulated with TTME or TTAC monomers achieved double bond conversion values close to 75%. Regarding the polymerization rate, materials formulated with TTME or TTAC achieved lower values than the material formulated with EDAB, giving them high shelf-life stability. The degree of conversion after shelf simulation was only reduced for the EDAB material. Ultimate tensile strength, translucency parameter, and micro-tensile bond strength to dentin were similar for control and experimental adhesive resins. Due to their characteristics, TTME and TTAC monomers are potentially useful in the formulation of photopolymerizable resins for dental use with high shelf-life stability.

Synthesis of poly(ethylene-co-butylene)-block-poly(ethylene oxide) surfactant and its use in the synthesis of polyhydroxyethyl methacrylate nanoparticles containing azo-dye

RSC Advances ◽  
2014 ◽  
Vol 4 (66) ◽  
pp. 35027-35034 ◽  
Author(s):  
Yee Song Ko ◽  
Monica V. Circu ◽  
Thomas Geiger ◽  
Simon Dünki ◽  
Frank A. Nüesch ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Azo Dye ◽  
Miniemulsion Polymerization ◽  
Hydroxyethyl Methacrylate ◽  
Polyhydroxyethyl Methacrylate ◽  
Inverse Miniemulsion ◽  
Poly Ethylene Oxide ◽  
Disperse Red 1 ◽  
Poly Ethylene

A new poly(ethylene-co-butylene)-block-poly(ethylene oxide) surfactant was synthesized and used in inverse miniemulsion polymerization of 2-hydroxyethyl methacrylate with encapsulated Disperse Red 1.

The Kinetics of Methyl Methacrylate Miniemulsion Polymerization Characterized through a Fluorescence Method

2012 ◽  
Vol 178-181 ◽  
pp. 609-612
Author(s):  
Hai Ke Feng ◽  
Hua Yu Qiu ◽  
Li Yuan Ding ◽  
Cun Jin Xu
Keyword(s):  
Methyl Methacrylate ◽  
Anionic Surfactant ◽  
Sodium Dodecyl Sulphate ◽  
Sodium Dodecyl ◽  
Miniemulsion Polymerization ◽  
Time Measurement ◽  
Fluorescence Method ◽  
Real Time Measurement ◽  
Measurement Results ◽  
Kinetics Of

In this paper, we followed the kinetics of methyl methacrylate (MMA) through a novel fluorescence method. The real-time measurement results show that in the regime of very low monomer contents, such as a solution containing 0.1 wt% of MMA with respect to water and with the anionic surfactant of sodium dodecyl sulphate (SDS), the kinetic of the miniemulsion could be followed by this embed fluorescence method. The processes of changing from emulsion to miniemulsion with different amount of surfactant and cosurfactant also have been monitored.

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