EFFECT OF REACTANT CONCENTRATION VARIATIONS ON THE KINETICS OF ATOM TRANSFER RADICAL POLYMERIZATION OF ACRYLONITRILE

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ROGHANI MAMAQANI H.; HADDADI ASL V.; NAJAFI MOHAMMAD; SALAMI KALAJAHI M.

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Journal: Iranian Journal of Polymer Science and Technology Year:2010 | Volume:23 | Issue:1 (ISSUE NO. 105) Page(s): 53-64

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Information Journal Paper

Title

EFFECT OF REACTANT CONCENTRATION VARIATIONS ON THE KINETICS OF ATOM TRANSFER RADICAL POLYMERIZATION OF ACRYLONITRILE

Author(s)

ROGHANI MAMAQANI H. | HADDADI ASL V. | NAJAFI MOHAMMAD | SALAMI KALAJAHI M. | Issue Writer Certificate

Keywords

ATRP POLYACRYLONITRILEQ3

REACTANT CONCENTRATIONQ2

KINETICQ3

CATALYSTQ3

Abstract

Polyacrylontrile synthesis, via atom transfer radical polymerization, is studied in various initiator concentrations, transitional metal CATALYST and different concentrations of CuBr2. The variations of monomer conversion and the linearity of semi-logarithmic KINETIC profile which is the evidence of living polymerization and constant radical concentration in the reaction medium, were revealed by gas chromatography technique (GC). Gel permeation chromatography (GPC) studies revealed that, the number average molecular weight increases linearly against monomer conversion, an indicative of living nature of the polymerization process. Additionally, the conversion, apparent rate constant and number average molecular weight increased with increased initiator concentration as well as the transitional metal complex concentration. However, addition of CuBr2 lowered conversion, kapp, and the number average molecular weight of polyacrylonitrile. Molecular weight distribution of synthesized polymers broadened with increased initiator concentration and also transitional metal complex concentration. However, addition of CuBr2 has resulted in narrower molecular weight distribution polyacrylonitrile. Moreover, all the samples experienced a drop in PDI value from nearly 2 to almost 1.1 as the reaction progressed.

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APA: Copy

ROGHANI MAMAQANI, H., HADDADI ASL, V., NAJAFI, MOHAMMAD, & SALAMI KALAJAHI, M.. (2010). EFFECT OF REACTANT CONCENTRATION VARIATIONS ON THE KINETICS OF ATOM TRANSFER RADICAL POLYMERIZATION OF ACRYLONITRILE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 23(1 (ISSUE NO. 105)), 53-64. SID. https://sid.ir/paper/6369/en

Vancouver: Copy

ROGHANI MAMAQANI H., HADDADI ASL V., NAJAFI MOHAMMAD, SALAMI KALAJAHI M.. EFFECT OF REACTANT CONCENTRATION VARIATIONS ON THE KINETICS OF ATOM TRANSFER RADICAL POLYMERIZATION OF ACRYLONITRILE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2010;23(1 (ISSUE NO. 105)):53-64. Available from: https://sid.ir/paper/6369/en

IEEE: Copy

H. ROGHANI MAMAQANI, V. HADDADI ASL, MOHAMMAD NAJAFI, and M. SALAMI KALAJAHI, “EFFECT OF REACTANT CONCENTRATION VARIATIONS ON THE KINETICS OF ATOM TRANSFER RADICAL POLYMERIZATION OF ACRYLONITRILE,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 23, no. 1 (ISSUE NO. 105), pp. 53–64, 2010, [Online]. Available: https://sid.ir/paper/6369/en

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