Propagation Kinetics of Isoprene Radical Homopolymerization Derived from Pulsed Laser Initiated Polymerizations

Büren, Brian van; Brandl, Florian; Beuermann, Sabine

doi:10.1002/mren.201900030

Cited by 7 publications

(3 citation statements)

References 50 publications

(102 reference statements)

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“…However, it allows us to generally interpret the CVD of PI deposition kinetic. A similar relationship between the temperature and the polymerization rate was observed in PI synthesized via pulsed laser-initiated polymerization, 33 where the activation energy was found to be 40 kJ/mol.…”

Section: Mjsupporting

confidence: 67%

Vapor deposition polymerization of synthetic rubber thin film in a plasma enhanced chemical vapor deposition reactor

Gürsoy

2020

J of Applied Polymer Sci

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Rubber is one of the most commonly used industrial materials worldwide. However, there is a gap in the literature on the production of rubber thin films in nanoscale. When the rubber thin films are produced in nanoscale, they can be used in high-tech applications where bulk rubbers have never been used before. This study is one of the first investigations to focus on the vapor-based production of the polyisoprene (PI), which is an important member of the synthetic rubber class. For this purpose, a single-step, rapid and environmentally friendly method based on plasma enhanced chemical vapor deposition (PECVD) was employed to produce PI thin films using 2-methyl-1,3-butadiene (isoprene). The high-vapor pressure of isoprene makes it a promising monomer for the production of chemical vapor deposition polymers. The effect of plasma processing parameters on the PI deposition rate was investigated. The deposition rate of PI thin film as high as 40 nm/min was achieved and the contact angle of PI coated bamboo surface was found to be 146.8. The mechanical durability and laundering tests of PI thin films were performed. Based on this study results, PI thin films produced by PECVD can be used in a number of potential applications.

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Section: Mjsupporting

confidence: 67%

Vapor deposition polymerization of synthetic rubber thin film in a plasma enhanced chemical vapor deposition reactor

Gürsoy

2020

J of Applied Polymer Sci

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“…[ 44 ] Later, k p,isoprene by bulk radical polymerization measured with pulsed laser initiated polymerization (PLP) was reported as 99 L mol −1 s −1 at 50 °C. [ 45 ] By PLP, the GMA homopropagation rate constant k p,GMA = 1230 L mol −1 s −1 at 50 °C. [ 46 ] This order of magnitude difference influences the faster rate of consumption of the methacrylate versus diene and was reflected in the composition.…”

Section: Resultsmentioning

confidence: 99%

Development of Myrcene‐Based Resins with Amine Ended Poly(Propylene Glycol) Side Chains Bonded Through Hydroxyurethane Linkages

Farkhondehnia

Younes

Marić

2022

Macro Reaction Engineering

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Hybrid non‐isocyanate poly(urethanes) (HNIPUs) are designed from a precursor whose carbonate functionality is derived from epoxy‐functional statistical copolymers. Specifically, a bio‐based diene (β‐myrcene) is copolymerized via conventional free radical polymerization with glycidyl methacrylate (GMA) at different molar ratios, producing flexible copolymers with epoxy pendant groups, which are then reacted with carbon dioxide to yield the precursors with cyclic carbonate functionality. Subsequent addition of an amine‐terminated telechelic poly(propylene glycol) (PPG) forms urethane linkages in the side chains, whose concentration is tuned by varying the GMA initial molar fraction. The NIPUs are end‐capped with silanes to enable moisture curing, resulting in HNIPUs with elongations at break up to 150%, and relatively low elastic moduli varying from 32 kPa to 50 kPa as the number of urethane side linkages increases from 6 to 22. The swelling ratio of the NIPUs is also measured in tetrahydrofuran (THF). As the number of urethane side chains increases, the swelling ratio of the NIPUs decreases (710% to 620%), indicating a higher crosslinking density. All samples have gel contents higher than 50% in THF, indicating non‐crosslinked species in the hybrid samples which confirms the relatively low reported tensile moduli.

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“…For details the reader is referred to, for example, reference. [63] Following the guidelines reported, BA solution polymerizations at 20 and 40°C were carried out using an XeF laser (details reported 2.0-4.0 2.0-4.0 1.5-3.5 1.0-3.0 elsewhere [64] ) operated at a pulse repetition rate of 500 Hz and with a DMPA concentration of 5 mmol•L −1 . For BA bulk polymerization at 40°C a k p value of 23 200 L•mol −1 •s −1 was determined, which is in excellent agreement with the literature value of 22 800 L mol −1 s −1 .…”

Section: Determination Of the Kinetic Coefficient Of Ba Thermal Self-...mentioning

confidence: 99%

Kinetic Monte Carlo Simulations as a Tool for Unraveling the Impact of Solvent and Temperature on Polymer Topology for Self‐Initiated Butyl Acrylate Radical Polymerizations at High Temperatures

Mätzig

Drache

Drache³

et al. 2023

Macro Theory & Simulations

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High‐temperature butyl acrylate polymerizations in bulk and in solution are investigated experimentally and by kinetic Monte Carlo (kMC) simulations. The experimental data comprise conversion‐time data, molar mass distributions, and branching levels per polymer chain derived from size‐exclusion chromatography with a multiangle laser light scattering detector. A kMC model is established, which allows for the description of the impact of solvent and temperature on molar mass distribution as well as type and content of macromonomers. Within the study kinetic coefficients for transfer to solvent and the thermal self‐initiation of the monomer are determined according to the Metropolis Hastings algorithm. The kMC simulations provide information, which are otherwise not accessible, for example, the number of branch points per molecule as a function of molar mass or the molar mass distribution of various macromonomer species. Moreover, molar ratios of mid‐chain and chain‐end radicals are at hand for temperatures up to 160°C, which are important for the interpretation of the experimentally and via simulation‐derived polymer topology as a function of molar masses.

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Propagation Kinetics of Isoprene Radical Homopolymerization Derived from Pulsed Laser Initiated Polymerizations

Cited by 7 publications

References 50 publications

Vapor deposition polymerization of synthetic rubber thin film in a plasma enhanced chemical vapor deposition reactor

Vapor deposition polymerization of synthetic rubber thin film in a plasma enhanced chemical vapor deposition reactor

Development of Myrcene‐Based Resins with Amine Ended Poly(Propylene Glycol) Side Chains Bonded Through Hydroxyurethane Linkages

Kinetic Monte Carlo Simulations as a Tool for Unraveling the Impact of Solvent and Temperature on Polymer Topology for Self‐Initiated Butyl Acrylate Radical Polymerizations at High Temperatures

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