Vol. 80 No. 4 (2021)
RUBBERS (CAOUTCHOUC)

MECHANODESTRUCTION OF ISOPRENE RUBBER. PART 2. KINETICS OF MECHANICAL CRACKING PROCESS KINETICS

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  • V. Dorozhkin,
  • Ye. Mokhnatkina,
  • D. Zemskiy,
  • A. Valiev
V. Dorozhkin
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
Ye. Mokhnatkina
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
D. Zemskiy
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
A. Valiev
Nizhnekamsk Institute of chemical technology (branch) of the Federal state budgetary educational institution of higher education «Kazan national research technological University»
DOI: https://doi.org/10.47664/0022-9466-2021-80-4-180-183

Published 2021-08-22

Keywords

  • isoprene rubber,
  • mechanical cracking,
  • process kinetics,
  • activation energy,
  • molecular weight

How to Cite

[1]
Dorozhkin В., Mokhnatkina Е., Zemskiy Д. and Valiev А. 2021. MECHANODESTRUCTION OF ISOPRENE RUBBER. PART 2. KINETICS OF MECHANICAL CRACKING PROCESS KINETICS. Kauchuk i Rezina. 80, 4 (Aug. 2021), 180–183. DOI:https://doi.org/10.47664/0022-9466-2021-80-4-180-183.

Copyright (c) 2021 Kauchuk i Rezina

Creative Commons License

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Abstract

Continuation of studies of changes in molecular parameters, in particular the molecular weight (MM), during the plasticization (P) of isoprene rubber (SKI-3). The kinetics of mechanical cracking in the temperature range (T) 30–130 °C and time (t) 30–600 s are studied in detail. Plasticization of rubber, as before, was carried out in a laboratory rubber mixer of the company «NFM», and gel chromatographic studies were carried out on a gel chromatograph of the company «Waters». Equations, such as the Arrhenius equation, describing changes in the rate constant of mechanical cracking km at different T are proposed. Data on the effective activation energy of the mechanical cracking process (Eeffm) are obtained, which, for all the studied T, increase with the growth of time. The observed regularities are associated with changes in the molecular weight of SKI-3 at P.

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References

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