Molecular oxygen as a regulator of primary chain length of branched polymers formed in 3D radical polymerization. Oxidative polymerization of styrene

Kurochkin, S. A.; Silant'ev, Mikhail A.; Perepelitsyna, Evgeniya O.; Grachev, V. P.

doi:10.1016/j.polymer.2012.11.026

Cited by 12 publications

(6 citation statements)

References 32 publications

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“…Styrene has been found in the vinyl ester acrylate and polyester resins. This chemical is the most common monomers used in cross linking agents in polymerization process [6] [7]. Vinyl ester resins usually contain styrene, used to reduce the resin viscosity and improves overall polymer properties by allowing for a higher degree of reaction of the monomers [8].…”

Section: Discussionmentioning

confidence: 99%

Safety Evaluation of New Polymer Materials Proposed for Relining Drinking Water Pipes in the City of Milano

Palmiotto¹,

Bianchi²,

Brunelli³

et al. 2015

IJAMSC

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Relining is a trenchless technology of recoating the inside walls of damaged water pipes using composite materials. In the Safe Pipe project, co-financed by Regione Lombardia, alternative polymeric\ud materials for relining the drinking water distribution system of the city of Milan have been developed. Relining polymers have been evaluated for their toxicity. The identification of product impurities was performed by HPLC/HRMS and GC/MS analysis and safety evaluation was conducted applying toxicity data, when available, or applying QSAR models. Results showed low level of toxic substances in polymerized resins and in water samples in a migration/leaching test performed in a field experiment

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Section: Discussionmentioning

confidence: 99%

Safety Evaluation of New Polymer Materials Proposed for Relining Drinking Water Pipes in the City of Milano

Palmiotto¹,

Bianchi²,

Brunelli³

et al. 2015

IJAMSC

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“…Since polyperoxides exhibit unusual phenomenon of auto‐pyrolysis, they are potential candidates as an auto‐combustible fuel . Moreover, this class of polymers have great utility in the field of coating, dismentable adhesion, synthesis of branched polymer, as thermal and photo‐initiator for vinyl monomers to prepare homopolymers and block copolymers, and so on. Also, polyperoxides are biodegradable and biocompatible polymers …”

Section: Introductionmentioning

confidence: 99%

Degradable alternating polyperoxides from poly(ethylene glycol)‐substituted styrenic monomers with water solubility and thermoresponsiveness

Mete

Choudhury

2018

J. Polym. Sci. Part A: Polym. Chem.

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Water soluble alternating copolymers were prepared by oxidative free radical copolymerization of 4‐vinylbenzyl methoxypoly(oxyethylene) ether (PEGSt) and molecular oxygen at 50 °C. NMR spectroscopy established alternate sequence of PEGSt and peroxy bonds (OO) along the polymer main‐chain. The obtained polymers show temperature induced hydrophilic to hydrophobic phase separation, confirmed by UV‐visible spectroscopy and dynamic light scattering. The cloud point temperature (TCP) of the polymers can be tuned by changing the chain length of side‐chain poly(ethylene oxide) and incorporation of hydrophobic methyl methacrylate in the copolyperoxides. Exothermic degradation of these polyperoxides was confirmed by differential scanning calorimetry and the degradation products have been characterized by electron impact mass spectroscopy. Finally, N,N‐dimethylacrylamide was polymerized in the presence of these polyperoxides in toluene, highlighting their potential as polymeric free radical initiator during polymerization of vinyl monomers. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 2030–2038

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“…There are, however, few reports in the literature where other solvents are used in styrene polymerization to achieve specific ends. For example, Kurochkin et al [21] used o-xylene as solvent in their investigation of oxidative polymerization of styrene in the presence of molecular oxygen to regulate the length of polymer chain. To this end, the authors also alluded to the effectiveness of solvents containing aliphatic groups such as toluene, butyl acetate, acetone, etc.…”

Section: Introductionmentioning

confidence: 99%

Rationalization of solvent effects in the solution polymerization of styrene

Owolabi

Usman

Isanbor

et al. 2016

AUBTD-A

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Batch solution polymerization of styrene was investigated using seven solvents, namely acetone, chloroform, benzene, toluene, acetonitrile, ethyl acetate, and dimethyl sulphoxide (DMSO), to elicit solvent effects on the monomer conversion. Two separate initiators, benzoyl peroxide (BPO) and its blend with dicyclohexylphthalate (BPO blend), were used to unveil solventinitiator interaction. The results indicate that monomer conversion was highly influenced by nature of solvent. Acetone gave the highest monomer conversion while toluene gave the least conversion of all seven solvents studied irrespective of the initiator. Correlation of solvent parameters with conversion using linear solvation energy relationship of Kamlet and Taft indicates varying behavior in the two initiators. For benzoyl peroxide, dipolarity/polarizability and Reichardt electrophilicity demonstrate the most positive effect on monomer conversion, while refractive index, dielectric constant and Lewis acidbase interactions between the solvent and initiator show negative effect. On the other hand, for the BPO blend, dipolarity/polarizability, electrophilicity, and Lewis acidbase interactions all show positive influence on conversion, while refractive index and dielectric constant have negative effect. Acetone is the ideal solvent for solution polymerization of styrene based on monomer conversion and ease of solvent separation.

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Molecular oxygen as a regulator of primary chain length of branched polymers formed in 3D radical polymerization. Oxidative polymerization of styrene

Cited by 12 publications

References 32 publications

Safety Evaluation of New Polymer Materials Proposed for Relining Drinking Water Pipes in the City of Milano

Safety Evaluation of New Polymer Materials Proposed for Relining Drinking Water Pipes in the City of Milano

Degradable alternating polyperoxides from poly(ethylene glycol)‐substituted styrenic monomers with water solubility and thermoresponsiveness

Rationalization of solvent effects in the solution polymerization of styrene

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