Iron-Mediated ICAR ATRP of Methyl Methacrylate

Zhu, Gaohua; Zhang, Lifen; Zhang, Zhengbiao; Zhu, Jian; Tu, Yingfeng; Cheng, Zhenping; Zhu, Xiulin

doi:10.1021/ma102958y

Cited by 128 publications

(104 citation statements)

References 68 publications

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“…These methods and approaches were successfully introduced into polymerization process by different research groups [29][30][31][32][33]. Polymerization of MMA was effectively performed in ATRP [34,35], NMP [36] and RAFT [37,38]. The growth of a new kinetic model for the polymerization of methyl methacrylate (MMA) using novel catalyst and different methods at moderate temperature will be one of the major progresses in an industrial perspective.…”

Section: Introductionmentioning

confidence: 99%

Multi-site phase transfer catalyzed radical polymerization of methyl methacrylate in mixed aqueous–organic medium: a kinetic study

et al. 2017

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This work establishes the kinetics of radical polymerization of methyl methacrylate in an aqueous-organic two-phase system using 1,4-bis (triethylmethylammonium) benzene dichloride (TEMABDC) as multi-site phase transfer catalyst and potassium peroxydisulphate (K 2 S 2 O 8 ) as water-soluble initiator at 60 ± 1°C under nitrogen atmosphere. The role of concentrations of monomer, initiator, catalyst, acid and ionic strength, temperature and volume fraction of aqueous phase on the rate of polymerization (R p ) was investigated. . The rate of polymerization increases with an increase in the concentration of monomer, initiator, catalyst and temperature. A generalized reaction model was developed to explain the phase transfer catalyzed polymerization reaction. Based on the kinetic results, radical mechanism has been derived. The activation energy and other thermodynamic parameters were calculated. The FT-IR spectroscopy validates a band of 1732 cm -1 of ester group of the obtained polymer. The viscosity average molecular weight of the PMMA was found 1.6955 9 10 4 g/mol.

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Section: Introductionmentioning

confidence: 99%

Multi-site phase transfer catalyzed radical polymerization of methyl methacrylate in mixed aqueous–organic medium: a kinetic study

et al. 2017

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“…This was because it took time for the AIBN to decompose and reduce Cu(II) to Cu(I) to start the polymerization and establish a dynamic equilibrium between species. 24 Comparison between the conversion curves at different ultrasound powers revealed that the rate of polymerization was faster at the output power of 70 W than at the other power levels. US waves improve the homogeneity of the polymerization medium and increase the collision rate of the reactants, leading to higher rate of the polymerization.…”

Section: Resultsmentioning

confidence: 99%

Ultrasonically enhanced bulk ATRP of methyl methacrylate at high conversion with good livingness and control

Rabea

Zhu

2016

AIChE Journal

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A great challenge in controlled radical polymerization such as atom transfer radical polymerization (ATRP) has been related to keep the livingness and molecular weight control of the reaction at high conversion, especially in bulk polymerization. The objective of this work is to investigate the effects of ultrasound power on the polymerization at high conversion. The initiator for continuous activator regeneration ATRP is used for bulk polymerization of methyl methacrylate (MMA) as the model system. Good livingness and control up to high conversion are obtained through employing ultrasonic waves. By this method, MMA is polymerized in bulk up to "glass state" (88%) at 708C with polydispersity about 1.2 under an operating frequency of 40 kHz and output power of 100 W. Chain extension reaction proves the livingness of the synthesized polymers at glassy state.

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“…In a RATRP system, it was not sensitive to air due to higher oxidation transition metals used. Iron complex catalyst is one of the most commonly transition metals and has been applied in controlled/living polymerization [25][26][27][28]. Iron was easily complexed with more environmentally friendly organic acid [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Reactivity ratios of controlled/living copolymerization of styrene and acrylonitrile in ionic liquid microemulsion

Wang

Hou

et al. 2013

J Polym Res

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In this work, reverse atom transfer radical copolymerization of styrene and acrylonitrile was investigated at 65°C in ionic liquid microemulsion using 2,2'-azobis(isobutyronitrile) (AIBN) as initiator, FeCl 3 ·6H 2 O/succnic acid as catalyst complex, and hexadecyl trimethyl ammonium bromide as surfactant. The copolymers of styrene and acrylonitrile (SAN) with predetermined molecular weights and narrow molecular weight distribution were obtained. Results showed that the polymerization proceeded in a controlled/'living' process in which the molecular weight of SAN increased with increasing the monomer conversion. The size of the resulting SAN particle was investigated. The monomer reactivity ratios increased with increasing the molar ratio of acrylonitrile to styrene. The obtained polymer was characterized by 13 C nuclear magnetic resonance and gel permeation chromatography. The living characteristics were demonstrated by chain extension experiment.

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Iron-Mediated ICAR ATRP of Methyl Methacrylate

Cited by 128 publications

References 68 publications

Multi-site phase transfer catalyzed radical polymerization of methyl methacrylate in mixed aqueous–organic medium: a kinetic study

Multi-site phase transfer catalyzed radical polymerization of methyl methacrylate in mixed aqueous–organic medium: a kinetic study

Ultrasonically enhanced bulk ATRP of methyl methacrylate at high conversion with good livingness and control

Reactivity ratios of controlled/living copolymerization of styrene and acrylonitrile in ionic liquid microemulsion

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