Toward the development of a mathematical model for the bulk in situ radical polymerization of methyl methacrylate in the presence of nano‐additives

Verros, George D.; Achilias, Dimitris S.

doi:10.1002/cjce.22539

Cited by 11 publications

(21 citation statements)

References 63 publications

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“…The model equations for these phenomena are summarized in Table . They were derived by combining the entropic model of Gam et al with sound free volume principles according to our previous work …”

Section: Theoretical Partmentioning

confidence: 99%

“…The main feature of the bulk in situ polymerization is the existence of diffusion controlled reactions at high conversion. Besides the large number of published work on diffusion controlled radical polymerization only a few models for the bulk in situ diffusion controlled polymerization reactions appeared in the literature . Moreover, although synthesis of nanocomposites of GO with several polymers has been published, incorporation of GO in the butyl methacrylate (BMA) polymerization has not so far appeared in literature.…”

Section: Introductionmentioning

confidence: 99%

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An experimental and theoretical study of butyl methacrylatein situradical polymerization kinetics in the presence of graphene oxide nanoadditive

Michailidis

Verros

Deliyanni

et al. 2017

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

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The butyl methacrylate radical polymerization kinetics in the presence of graphene oxide nanoadditive is studied both experimentally and theoretically. The experimental study includes the formation of graphite oxide from the oxidation of graphite and its subsequent transformation to graphene oxide (GO) after ultrasonication and in situ polymerization. Monomer conversion versus time was monitored gravimetrically at various reaction temperatures and initial GO fractions. Formation of GO was verified by X‐ray diffraction spectra and the number and weight average molecular weights of the final polymer were obtained from GPC measurements. A detailed theoretical kinetic model was further developed. The model predictions were found to be in satisfactory agreement with the experimental data. The presence of GO was found to result in reduced initiator efficiency verified theoretically and explained through side reactions of primary radicals. Finally, nanocomposites showed enhanced thermal stability compared to neat PBMA. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 1433–1441

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Section: Theoretical Partmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An experimental and theoretical study of butyl methacrylatein situradical polymerization kinetics in the presence of graphene oxide nanoadditive

Michailidis

Verros

Deliyanni

et al. 2017

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

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“…Despite the challenges, the kinetics of bulk free‐radical polymerizations and resulting molecular weight distributions are the subject of numerous studies and modeling efforts . Capturing the observed reaction rate is sometimes achieved via adjustable parameters .…”

Section: Introductionmentioning

confidence: 99%

Infusible acrylic thermoplastic resins: Tailoring of chemorheological properties

Cousins

Howell

Suzuki

et al. 2019

J of Applied Polymer Sci

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Infusible liquid resins that polymerize into a thermoplastic are desirable for many applications. Similar to unsaturated and vinylester thermosetting systems, they consist of polymers dissolved in reactive monomer. This work presents a method to decrease cycle time by tuning the molecular weight and concentration of the predissolved polymer in the resin. Variation of these properties allows precise control of the viscosity which in turn controls the time at which peak exotherm is reached, the maximum temperature for a given part thickness, and cure time. Predictive models for the viscosity dependence on molecular weight, polymer concentration, shear rate, and temperature are developed. Two fiberglass panels are fabricated and tested; one with a lower molecular weight (Mw~30 kg mol−1) poly(methyl methacrylate) dissolved in methyl methacrylate and the second with higher molecular weight (Mw~500 kg mol−1) predissolved polymer in the resin. Mechanical properties are indistinguishable but the lower molecular weight panel cures up to three times faster. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48006.

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“…Free radical polymerization and the diffusive effects involved have been subject of study by decades . However, due to its complexity, this reaction has not been completely understood at all.…”

Section: Introductionmentioning

confidence: 99%

“…Free radical polymerization and the diffusive effects involved have been subject of study by decades. [1] However, due to its complexity, this reaction has not been completely understood at all. A huge number of products are worldwide produced by this process, [2] so it is important to increase our comprehension by means of mathematical models that can be used as predictive tools for facing challenges in laboratory and in industry.…”

Section: Introductionmentioning

confidence: 99%

Autoacceleration in Bulk Free‐Radical Polymerization: Effect of Chain Transfer

Victoria‐Valenzuela¹,

Herrera‐Ordóñez²,

Ricardo³

et al. 2017

Macro Chemistry & Physics

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The model and methodology for estimating diffusion‐controlled rate coefficients for the methyl methacrylate polymerization system reported in Parts I and II of this series is extended to include the chain transfer reaction to an agent (CTA). Theoretical and experimental results exhibit minima in the rate of polymerization curves at low conversions as it is observed in the absence of CTA. Such minima are proposed to be the onset of the autoacceleration effect where the termination reaction undergoes a transition from chemically controlled to diffusion controlled where the segmental mobility of the chain ends plays a key role. As the CTA concentration increases, the conversion at which the minimum is presented is higher and the autoacceleration is less pronounced. This behavior is explained in terms of the effect of polymer chain entanglements and segmental mobility of the chain ends on the termination rate coefficient k t.

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Toward the development of a mathematical model for the bulk in situ radical polymerization of methyl methacrylate in the presence of nano‐additives

Cited by 11 publications

References 63 publications

An experimental and theoretical study of butyl methacrylatein situradical polymerization kinetics in the presence of graphene oxide nanoadditive

An experimental and theoretical study of butyl methacrylatein situradical polymerization kinetics in the presence of graphene oxide nanoadditive

Infusible acrylic thermoplastic resins: Tailoring of chemorheological properties

Autoacceleration in Bulk Free‐Radical Polymerization: Effect of Chain Transfer

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