Phase Transfer Catalysis: Polymerization Kinetics and Mechanism of Methyl Acrylate

Thajudeen, Habeebullah; Ahamed, V.S. Jamal; Shabeer, T. K.

doi:10.1080/00914030802153264

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…There are several reports on polymerization of various alkyl methacrylates was reported using different PTC [16][17][18][19][20][21][22][23][24][25][26][27]. According to these reports, the comparative and reactivity of methyl and ethyl methacrylate under multi-site phase-transfer catalytic conditions is limited.…”

Section: Introductionmentioning

confidence: 99%

Comparative investigation on radical polymerization of methyl and ethyl methacrylate under multi-site phase-transfer catalytic conditions

Murugesan

Marimuthu

2018

Appl Petrochem Res

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Methyl and ethyl methacrylate was polymerized in heterogeneous system with the help of newly synthesized multi-site phase-transfer catalyst and using water-soluble initiator at 60 ± 1 °C under unstirred inert atmospheric condition. Polymer yield was increased with increasing molar concentrations of monomer, initiator, catalyst and temperature. Polymerization follows first-order kinetics with respect to monomer and half-order with respect to catalyst and initiator, respectively. PTC has myriads of applications in the synthesis of various organic and polymeric materials because of its fast reaction and high yield in short period of time. Without addition of PTC, polymerization did not occur; this indicates that catalyst plays the pivotal role on initiation of polymerization. It extracts the reactive radical anion from aqueous phase and transfers to the organic phase where acrylates were polymerized. Polymerization reactivity of methyl and ethyl methacrylate under PTC conditions was studied by various parameters. The activation energy (Ea) and other thermodynamic parameters were calculated. The Ea value supports the reactivity of acrylates. The results obtained from this investigation were used for inferring the radical mechanism of phase-transfer-catalyzed polymerization. The obtained polymers were analyzed by spectral and thermal analyses.

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Section: Introductionmentioning

confidence: 99%

Comparative investigation on radical polymerization of methyl and ethyl methacrylate under multi-site phase-transfer catalytic conditions

Murugesan

Marimuthu

2018

Appl Petrochem Res

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“…For instance, the reaction formula of p-nitrochlorobenzene, methanol, and sodium hydroxide under the action of phase-transfer catalysts is [67][68][69] (Figure 9): The reaction of p-nitrochlorobenzene and sodium methoxide is a two-step SN 2 reaction. Add a phasetransfer catalyst (e.g., fiber-supported benzyltriethylammonium chloride phase-transfer catalyst Q) to the reaction medium, and the reaction begins.…”

Section: Kinetics Of Phase-transfer Catalysismentioning

confidence: 99%

"A Minireview of Phase-Transfer Catalysis and Recent Trends"

Zhu

2022

BJSTR

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To date, temperature-controlled phase-transfer catalyst, supported phase-transfer catalyst, and hydrogen bond phase-transfer catalyst are regarded as alternatives to traditional phase-transfer catalyst such as onium salt crown ether and polyether phase-transfer catalyst, have drawn significant attention from related scientists owing to their excellent properties, including nontoxicity, well-cycling performance, low cost, and facile synthesis. Especially, supported phase-transfer catalyst can not only overcome the poor solubility of heterogeneous systems came out but also can be reused many times and have been successfully applied in numerous technological fields. The influx of different novel recyclable phase-transfer catalysts is essential to overcome traditional phase-transfer catalyst's large consumption, environmental pollution, difficulty in recycling, and high toxicity. Herein, this mini-review sum up recent advances in the organic synthesis of novel phase-transfer catalysts and their promising applications.

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“…A kinetic study of phase transfer agent aided free radical polymerization of methyl methacrylate was reported [5] using potassium peroxydisulfate as the initiator and cetyltrimethylammonium chloride as the phase transfer catalyst in benzene/water two phase system. In our previous work, we reported the kinetics of phase transfer catalyzed polymerization of methyl acrylate in the presence of KHSO 5 -benzyltributylammonium chloride system [6]. Umapathy et al [7] investigated the kinetics of free radical polymerization using (NH 4 ) 2 S 2 O 8 in the presence of benzyltributylammonium chloride.…”

Section: Introductionmentioning

confidence: 99%

Radical polymerization of methyl methacrylate (MMA) initiated by KHSO5 – BTBAC system - a kinetic study

Ahamed¹,

Thajudeen²,

Shabeer³

2012

J Polym Res

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Kinetics of free radical polymerization of methyl methacrylate using potassium peroxomonosulfate as initiator in the presence of benzyltributylammonium chloride (BTBAC) as phase transfer catalyst was studied. The polymerization reactions were carried out under nitrogen atmosphere and unstirred conditions at a constant temperature of 60°C in ethyl acetate/water bi-phase system. The role of concentrations of monomer, initiator, catalyst, temperature, acid and ionic strength on the rate of polymerization (R p ) was ascertained. The orders with respect to monomer, initiator and phase transfer catalyst were found to be 1.5, 0.5 and 0.5 respectively. The rate of polymerization (R p ) is independent of ionic strength and pH. Based on the kinetic results, a suitable mechanism is proposed.

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Phase Transfer Catalysis: Polymerization Kinetics and Mechanism of Methyl Acrylate

Cited by 7 publications

References 11 publications

Comparative investigation on radical polymerization of methyl and ethyl methacrylate under multi-site phase-transfer catalytic conditions

Comparative investigation on radical polymerization of methyl and ethyl methacrylate under multi-site phase-transfer catalytic conditions

"A Minireview of Phase-Transfer Catalysis and Recent Trends"

Radical polymerization of methyl methacrylate (MMA) initiated by KHSO5 – BTBAC system - a kinetic study

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