scholarly journals Measuring Interfacial Polymerization Kinetics Using Microfluidic Interferometry

2018 ◽  
Vol 140 (9) ◽  
pp. 3173-3176 ◽  
Author(s):  
Arash Nowbahar ◽  
Vincent Mansard ◽  
Jodi M. Mecca ◽  
Mou Paul ◽  
Tina Arrowood ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Polymerization Kinetics

The mechanism of the anionic coordination polymerization of isoprene

1980 ◽  
Vol 45 (9) ◽  
pp. 2391-2399 ◽  
Author(s):  
Miroslav Kašpar ◽  
Jiří Trekoval
Keyword(s):  
Chromatographic Method ◽  
Initial Period ◽  
Reaction Scheme ◽  
Polymerization Kinetics ◽  
Coordination Polymerization ◽  
Initial Concentration ◽  
The Cross ◽  
Gas Chromatographic Method ◽  
Kinetics Of

The polymerization kinetics of isoprene (2-methyl-1,3-butadiene) in benzene with butyllithium as the initiator was investigated by the gas chromatographic method. After completion of the initial period of the reaction, its order with respect to the initial concentration of initiator is negative at the concentrations of the latter between 0.01 and 0.25 mol/l, and positive at higher concentrations. A reaction scheme has been suggested with respect to the "cross" association of butyllithium and of the "living" oligoisoprene.

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 Interfacial Polymerization at the Alkane/Ionic Liquid Interface

2021 ◽  
Author(s):  
Chang Liu ◽  
Jing Yang ◽  
Bian‐Bian Guo ◽  
Seema Agarwal ◽  
Andreas Greiner ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Interfacial Polymerization ◽  
Liquid Interface

scholarly journals Synthesis and Polymerization Kinetics of Rigid Tricyanate Ester

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1686
Author(s):  
Andrey Galukhin ◽  
Roman Nosov ◽  
Ilya Nikolaev ◽  
Elena Melnikova ◽  
Daut Islamov ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Single Step ◽  
Polymerization Kinetics ◽  
Scanning Calorimetry ◽  
Modulated Differential Scanning Calorimetry ◽  
Diffusion Controlled ◽  
Polymerization Product ◽  
The One ◽  
Kinetics Of

A new rigid tricyanate ester consisting of seven conjugated aromatic units is synthesized, and its structure is confirmed by X-ray analysis. This ester undergoes thermally stimulated polymerization in a liquid state. Conventional and temperature-modulated differential scanning calorimetry techniques are employed to study the polymerization kinetics. A transition of polymerization from a kinetic- to a diffusion-controlled regime is detected. Kinetic analysis is performed by combining isoconversional and model-based computations. It demonstrates that polymerization in the kinetically controlled regime of the present monomer can be described as a quasi-single-step, auto-catalytic, process. The diffusion contribution is parameterized by the Fournier model. Kinetic analysis is complemented by characterization of thermal properties of the corresponding polymerization product by means of thermogravimetric and thermomechanical analyses. Overall, the obtained experimental results are consistent with our hypothesis about the relation between the rigidity and functionality of the cyanate ester monomer, on the one hand, and its reactivity and glass transition temperature of the corresponding polymer, on the other hand.

Synthesis of Shape-Controllable Anisotropic Microparticles and “Walnut-like” Microparticles via Emulsion Interfacial Polymerization

Langmuir ◽  
2021 ◽  
Author(s):  
Haohong Sun ◽  
Shaohui Lin ◽  
Flora T. T. Ng ◽  
Sushanta K. Mitra ◽  
Qinmin Pan
Keyword(s):  
Interfacial Polymerization

Transmissive to blackish-green NIR electrochromism in a Co(II)-based interfacial co-ordination thin-film

2021 ◽  
Author(s):  
Susmita Roy ◽  
Chanchal Chakraborty
Keyword(s):  
Thin Film ◽  
Interfacial Polymerization ◽  
Solvent Solvent

Herein, a Co(II)-based metallo-polymer (Co-tpy-L ) with three armed non-conjugated terpyridine ligand is synthesized using solvent-solvent interfacial polymerization. The thin-film exhibits a durable transmissive-to-blackish green electrochromism, selectively covering the both...

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