Simulation and optimization of cellulose and styrene graft copolymerization process

Bataille, P.; Statioukha, G.; Statioukha, O.

doi:10.1002/cjce.5450740410

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…The optimum value, a,, = 4.9 x los g/mol, calculated from the model taking into account the compromise optimum for yield and conversion output (Bataille et al, 1996) was confirmed by experiment (M,, =3.64 x lo5 g/mol). The corresponding values of composition and processing conditions which yielded the highest value of molar mass for grafted polymer were: V, = 3.44 g, V2 = 0.53 g, V3 = 10 mL, The more complicated task to search for the "best" compatibilizer requires the development of a flexible scheme of copolymer production depending on characteristics of its components.…”

Section: (4)mentioning

confidence: 53%

“…The reaction was conducted under a nitrogen blanket essentially the same as was described elsewhere (Bataille et al, 1996).…”

mentioning

confidence: 99%

“…Low and high levels of factors variation were selected after taking into account the experimental data obtained from previous investigations (Bataille et al, 1996 Graczyk and Homoff, 1983;Graczyk and Homoff, 1988).…”

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confidence: 99%

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Study of the molar mass of grafted polystyrene onto cellulose by the probability indices optimization

1997

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UkraineGraft polymerization of styrene onto cellulose was investigated using ceric ions redox systems as initiator. The effects of reactant concentrations and of processing variables on the molar mass of grafted styrene on the cellulose were studied. A statistical model with the D-optimal design was used to describe the system. The optimum polystyrene molar mass obtained by simulation was compared to experimental data. The optimal reaction conditions for such a reaction were determined.La polymerisation par greffage du styrene sur la cellulose a ete effectuee en presence d'ions cerique (IV). On a etudie I'effet de la concentration des reactifs (amorceur, cellulose, monomere) ainsi que les variables d'operation (agitation, temperature, temps de reaction). Un modele statistique a ete utilise pour obtenir les conditions optimales du procede. Les valeurs optimales pour la masse molaire ont ete determinees experimentalement et par simulations. Les conditions experimentales optimales ont ete determinees.Keywords: graft, polymerization, molar mass, cellulose, styrene, modelling.ellulose and its derivatives, particularly grafted cellu-C lose, has generated a great interest in the production of composites (Hebeish and Guthrie, 1981). The addition of certain copolymers to the composite alters the interfacial adhesion between phases. These copolymers will act as a compatibilizer by reducing the interfacial tension and by improving the adhesion between the components of the composite (Paul, 1978).Researchers have noted that compatibilizing effects will appear when the molar mass of homopolymers forming the composite is less or, at least, comparable to the molar mass of grafted polymers. In the case when the molar mass of the homopolymers in the composite is greater than the molar mass of the graft, the homopolymers will form separate phases and will not blend with the copolymer part (Locke and Molau, 1970).Taking in account these peculiarities the system was optimized for the molar mass. Experimental procedureIn the present case, the free-radical polymerization mechanism with cerium IV as initiator was selected for studying cellulose/styrene copolymerization (Mino et al., 1959; Graczyk and Hornoff, 1988 a, b). The reaction was conducted under a nitrogen blanket essentially the same as was described elsewhere (Bataille et al., 1996).The effects of six variables on the copolymer yield (apparent and true) and polymer conversion were established. Low and high levels of factors variation were selected after taking into account the experimental data obtained from previous investigations (Bataille et al., 1996; Bataille *Authortowhomcorrespondenceshwldbeaddressed. Fax: (514)34M159.et Statiukha, 1995; Graczyk and Homoff, 1983; Graczyk and Homoff, 1988).The following criteria were selected to characterize the process: Y, -grafting yield, Y,-true grafting yield, Yj-conversion of the monomer to polymer and Y4-conversion of monomer to grafted polymer.The grafting yield, G, is the mass ratio of grafted polymer to cellulose. where A is t...

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Section: (4)mentioning

confidence: 53%

“…The reaction was conducted under a nitrogen blanket essentially the same as was described elsewhere (Bataille et al, 1996).…”

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confidence: 99%

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Study of the molar mass of grafted polystyrene onto cellulose by the probability indices optimization

1997

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“…After a series of washing steps using methanol (centrifuge), the obtained precipitate was filtered and rinsed with ethanol thrice to remove any unreacted L-lactide. After drying at room temperature overnight, the obtained material was dried in a vacuum oven at 60 o C for 6 h. Then, the monomer conversion degree was calculated by gravimetrical method [22,33], according to the Equation 1:…”

Section: Characterisation Of Grafted Cnfmentioning

confidence: 99%

A new method for producing polylactic acid biocomposites for 3D printing with improved tensile and thermo-mechanical performance using grafted nanofibrillated cellulose

Gauss

Pickering

2023

Additive Manufacturing

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“…[1] So far all types of polymerization reactions have been utilized to covalently attach polymer chains of defined structure onto specific positions of the cellulose moiety. Thus monomers such as styrene, [2] acrylic esters and -amides, [3] acrylonitrile, [4] ethylene oxide, [5] ethyleneimine, [6] e-caprolactam [7] and methyl methacrylate [8] have been successfully grafted by polymerization from the surface of cellulose.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and13C CP MAS NMR spectroscopy of cellulose-graft-poly(N-acetylethylenimine)

Mais¹,

Binder²,

Knaus³

et al. 2000

Macromol. Chem. Phys.

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Simulation and optimization of cellulose and styrene graft copolymerization process

Cited by 6 publications

References 8 publications

Study of the molar mass of grafted polystyrene onto cellulose by the probability indices optimization

Study of the molar mass of grafted polystyrene onto cellulose by the probability indices optimization

A new method for producing polylactic acid biocomposites for 3D printing with improved tensile and thermo-mechanical performance using grafted nanofibrillated cellulose

Synthesis and13C CP MAS NMR spectroscopy of cellulose-graft-poly(N-acetylethylenimine)

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