The ultrasonic devulcanization of a ground tire rubber in a co-rotating twin-screw extruder was studied and optimized using the response surface methodology based on an experimental design. This approach allowed evaluating the influence on the process of four variables (ultrasonic amplitude, temperature, screw speed and flow rate). The devulcanization process was investigated using several responses, including crosslink density, gel fraction, complex viscosity of the devulcanizates and tensile strength, modulus and elongation at break of the revulcanizates. Regression models and response surfaces were obtained for each response. The results predicted by these models showed good agreement with experimental values. The ultrasonic amplitude was found to be the most effective variable influencing the devulcanization process and mechanical properties. In addition, an optimization was carried out through a desirability function approach, in order to define the combination of process parameters that maximizes the mechanical properties and minimizes the degradation of the tire rubber.

Mangili, I., Lasagni, M., Huang, K., Isayev, A. (2015). Modeling and optimization of ultrasonic devulcanization using the response surface methodology based on central composite face-centered design. CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS, 144, 1-10 [10.1016/j.chemolab.2015.03.003].

Modeling and optimization of ultrasonic devulcanization using the response surface methodology based on central composite face-centered design

MANGILI, IVAN
Primo
;
LASAGNI, MARINA
;
2015

Abstract

The ultrasonic devulcanization of a ground tire rubber in a co-rotating twin-screw extruder was studied and optimized using the response surface methodology based on an experimental design. This approach allowed evaluating the influence on the process of four variables (ultrasonic amplitude, temperature, screw speed and flow rate). The devulcanization process was investigated using several responses, including crosslink density, gel fraction, complex viscosity of the devulcanizates and tensile strength, modulus and elongation at break of the revulcanizates. Regression models and response surfaces were obtained for each response. The results predicted by these models showed good agreement with experimental values. The ultrasonic amplitude was found to be the most effective variable influencing the devulcanization process and mechanical properties. In addition, an optimization was carried out through a desirability function approach, in order to define the combination of process parameters that maximizes the mechanical properties and minimizes the degradation of the tire rubber.
Articolo in rivista - Articolo scientifico
Ground tire rubber; Devulcanization; Central composite face-centered design; Response surface methodology; Ultrasonic twin-screw extruder; Desirability function;
English
2015
144
1
10
partially_open
Mangili, I., Lasagni, M., Huang, K., Isayev, A. (2015). Modeling and optimization of ultrasonic devulcanization using the response surface methodology based on central composite face-centered design. CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS, 144, 1-10 [10.1016/j.chemolab.2015.03.003].
File in questo prodotto:
File Dimensione Formato  
Mangili-2015-Chemomet Intellig Laborat Sys-VoR.pdf

Solo gestori archivio

Descrizione: Research Article
Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Licenza: Tutti i diritti riservati
Dimensione 1.8 MB
Formato Adobe PDF
1.8 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Mangili-2015-Chemomet Intellig Laborat Sys-AAM.pdf

accesso aperto

Descrizione: Research Article
Tipologia di allegato: Author’s Accepted Manuscript, AAM (Post-print)
Licenza: Creative Commons
Dimensione 600.7 kB
Formato Adobe PDF
600.7 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/81185
Citazioni
  • Scopus 67
  • ???jsp.display-item.citation.isi??? 60
Social impact