Application of the monomer reactivity ratios to the kinetic-model discrimination and the solvent-effect determination for the styrene/acrylonitrile monomer system

Kaim, Andrzej

doi:10.1002/(sici)1099-0518(20000301)38:5<846::aid-pola9>3.0.co;2-y

Cited by 13 publications

(9 citation statements)

References 27 publications

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“…These considerations were followed by the statistical analysis in order to determine the sequences (i.e., the first-order structures) of the resulting copolymers. The kinetic models employed are commonly used techniques, and their usefulness in studying copolymerization processes was confirmed in the past for various reaction schemes. − …”

Section: Methodsmentioning

confidence: 99%

Functional Thin Films Resulting from Parylene–Vinyl Copolymerization

2012

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Quantum and kinetic studies of novel materials based on parylene polymers and variously substituted vinyl molecules are presented and discussed. It is demonstrated that the thin films which are the products of the copolymerization reactions can be prepared (i) within the parylene CVD process on active vinyl substrates or (ii) employing the same process but involving an additional source of vinyl molecules transported to the reaction chamber. Both methods lead to differently functionalized microstructures, primarily dominated by the parylene units, while the vinyl molecules appear relatively seldom (depending on the nature of the substituents used). The copolymerization is shown to be independent of penultimate monomers in linear chains and to undergo composition drift within certain scope. Namely, it is found that even a small amount of p-xylylene monomers in feed leads to the formation of long blocks of pure parylene while the substituted vinyl molecules are expected to appear occasionally in chains. Finally, it is predicted that the two types of parylene functionalization result in specific structures and thus behavior of the corresponding thin films.

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Section: Methodsmentioning

confidence: 99%

Functional Thin Films Resulting from Parylene–Vinyl Copolymerization

2012

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“…To this end, a set of 100 points equidistant in the whole concentration range was generated representing monomer feed concentrations. For these values, copolymer compositions were calculated using well-established parameters for the penultimate model taken from Kaim [9] (fitted to data of Klumperman and Kraeger [10] for the system styrene (1)/acrylonitrile (2) in toluene). The penultimate parameters used were: r 11 = 0.225, r 22 = 0.120, r 21 = 0.532, r 12 = 0.095.…”

Section: Application Of the MML Methods To Model Validationmentioning

confidence: 99%

“…To ascertain that the terminal model cannot satisfactorily describe the data, the penultimate model should be applied and the Fisher test should be used to check for the significance of the penultimate model. [9,11]…”

Section: Application Of the MML Methods To Estimated Errors Evaluationmentioning

confidence: 99%

Use of the Maximum Likelihood Method for Composition Data Analysis in the Radical Copolymerization Terminal Model

Oracz¹,

Kaim

2001

Macromol. Theory Simul.

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“…Comprehensive background for the use of the F-test was given by Burke et al [6]. The same method was later applied to the monomer system in solution [14]. Using the terminal and penultimate models for experimental data reduction we have two independent distributions of differences between experimental and calculated values of variables.…”

Section: Experimental Partmentioning

confidence: 99%

Statistical approach to model discrimination for the radical copolymerization of methyl methacrylate and styrene from a posteriori data of composition

Kaim

Oracz²

2003

E-Polymers

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Abstract:The multiresponse maximum likelihood (MML) method and statistical tests -the F-test, the t-Student test, and the sign changes test -were compared with respect to their power of discrimination between two kinetic models, the terminal and the penultimate model, for the radical copolymerization of the styrene -methyl methacrylate monomer system in bulk. The results indicate that the investigated statistical methods (except the sign changes test) are suitable for kinetic-model discrimination when they are applied to a posteriori data of copolymer composition. Although the MML method was shown to be more demanding in the error estimation of experimental data, it can serve as a proper tool for kinetic-model discrimination in copolymerization, provided the correct estimates of the ratio between errors in measured copolymer composition data are known. The main steps of the calculating scheme are given.

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Application of the monomer reactivity ratios to the kinetic-model discrimination and the solvent-effect determination for the styrene/acrylonitrile monomer system

Cited by 13 publications

References 27 publications

Functional Thin Films Resulting from Parylene–Vinyl Copolymerization

Functional Thin Films Resulting from Parylene–Vinyl Copolymerization

Use of the Maximum Likelihood Method for Composition Data Analysis in the Radical Copolymerization Terminal Model

Statistical approach to model discrimination for the radical copolymerization of methyl methacrylate and styrene from a posteriori data of composition

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