Rate coefficients as a function of time during the after-effect of a photoinduced crosslinking polymerization

M. B. Bogacki; E. Andrzejewska; M. Andrzejewski

Published : 2022-09-18

Vol. 47 No. 10 (2002)

Rate coefficients as a function of time during the after-effect of a photoinduced crosslinking polymerization

M. B. Bogacki E. Andrzejewska M. Andrzejewski

Abstract

The polymerization of a dimethacrylate monomer occurring in the dark after the initiating light has been switched off (so-called after-effect) was modeled by assuming of two different termination mechanisms: monomolecular (Model 1) and bimolecular (Model 2). Time dependent monomolecular termination (k(t)(m)) and bimolecular termination (k(t)(b)) rate coefficients and a time independent propagation rate coefficient k(p) are used in the models. Both k(t)(m) and ktb are polynomial functions of time. A very important feature of the newly developed models is that free terms of polynomials correspond to values of k(t)(m) (Model 1) or k(p)[P-.](0) (Model 2) at the moment of stopping the irradiation (t(dark) = 0; [P-.](0) constitute macroradical concentrations at t(dark) = 0). Those values can be considered as describing the process during continuous irradiation. Calculations were performed for eight photoinduced polymerization processes, in which initiation had been interrupted at various degrees of double bond conversions (denoted as starting conversions). It was found that the conversion dependence of k(t)(b)[P-.](0) and k(t)(m) parameters extrapolated to t(dark) = 0 appearing in two various termination models was similar.

Keywords

fotopolimeryzacja ; efekt następczy ; dimetakrylan glikolu tetraetylenowego ; modelowanie ; mechanizm terminacji ; współczynniki szybkości zależne od czasu photopolymerization ; after-effect ; (tetraethylene glycol) dimethacrylate ; modeling ; termination mechanism ; time-dependent rate coefficients

Similar Articles

Natalia Konczal, Bartosz Nowinka, Marek Bieliński, Influence of chemical foaming on the structure and selected properties of glass fiber reinforced PA6 , Polimery: Vol. 67 No. 10 (2022)
Zahraa Saadi Abdallah , Ameen Hadi Mohammed, Crosslinked poly(hydroxybutyl acrylate-co-acrylamide) based hydrogels: synthesis, characterization, and performance evaluation in heavy metal removal , Polimery: Vol. 68 No. 2 (2023)
Łukasz Szajnecki, Agnieszka Nowak, Effects of poly(vinyl alcohol) matrix on the release of substances from the fragrance composition , Polimery: Vol. 68 No. 3 (2023)
M. Wejchan-Judek, B. Perkowska-Śpiewak, Sulfur compounds as modifiers in poly(1,4-phenylene sulfide) coatings , Polimery: Vol. 45 No. 1 (2000)
B. Samujło, R. Sikora, The course of Mg(OH)2 modified polyethylene extusion process , Polimery: Vol. 45 No. 1 (2000)
Martyna Sokołowska, Maja Marchwiana, Miroslawa El Fray, Vitamin E-loaded polymeric nanoparticles from biocompatible adipate-based copolymer obtained using the nanoprecipitation method , Polimery: Vol. 67 No. 11-12 (2022)
Ewa Miękoś, Marek Zieliński, Dariusz Sroczyński, Anna Fenyk, Influence of various forms of cellulose on the mechanical properties of polymer composites modified in a constant magnetic field , Polimery: Vol. 67 No. 10 (2022)
M.D. Hazrol, S.M. Sapuan, R.A. Ilyas, E.S. Zainudin, M.Y.M. Zuhri, N.I. Abdul Wahab, Morphology and selected properties of kenaf fiber/cornhusk reinforced corn starch hybrid biocomposites , Polimery: Vol. 67 No. 11-12 (2022)
Dariusz Tercki, Beata Orlińska, Dominika Słotwińska, Marcin Sajdak, Pickering emulsion polymerization of styrene towards alfa-functionalized polystyrene latex: parameters and process conditions , Polimery: Vol. 68 No. 4 (2023)
Juzheng Zhang, Zheng Gu, Chao Meng, Jianfa Wang, Jinyong Sui, Morphology and selected properties of NR/BR/CNT nanocomposites effect of ethanol-assisted mixing , Polimery: Vol. 68 No. 5 (2023)

<< < 49 50 51 52 53 54 55 56 57 58 > >>

You may also start an advanced similarity search for this article.

Details

Statistics

Authors

Download files

Zasady cytowania

Bogacki, M. B., Andrzejewska, E., & Andrzejewski, M. (2022). Rate coefficients as a function of time during the after-effect of a photoinduced crosslinking polymerization. Polimery, 47(10), 734–737. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/2025

Citing articles via

Statistics

Total abstract views : 0

PDF Downloads : 0

M. B. Bogacki Ewa.Andrzejewska@put.poznan.pl

Affiliation
Poznań University of Technology, Faculty of Chemical Technology, Pl. M. Skłodowskiej-Curie 2, 60-965 Poznań, Poland

E. Andrzejewska

M. Andrzejewski