Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction Time

The main objective of the present work was to synthesis polyamide 6 through anionic polymerization of ε-caprolactam in an internal mixer. The reaction time and the rheological properties of samples during the polymerization were studied. The samples were characterized by Thermo Gravimetry Analysis (...

Full description

Bibliographic Details
Main Authors: Mohammad Mahdi Salehi, Omid Moini
Format: Article
Language:English
Published: Iranian Research Organization for Science and Technology (IROST) 2015-05-01
Series:Journal of Particle Science and Technology
Subjects:
Online Access:http://jpst.irost.ir/article_114_ca4c349f2a73b5481acbe5733aba10ea.pdf
_version_ 1818640942056341504
author Mohammad Mahdi Salehi
Omid Moini
author_facet Mohammad Mahdi Salehi
Omid Moini
author_sort Mohammad Mahdi Salehi
collection DOAJ
description The main objective of the present work was to synthesis polyamide 6 through anionic polymerization of ε-caprolactam in an internal mixer. The reaction time and the rheological properties of samples during the polymerization were studied. The samples were characterized by Thermo Gravimetry Analysis (TGA), Differential Scanning Calorimeter (DSC) and FT-IR spectrometer. The melt flow behavior and viscoelastic properties of the samples were studied by using a Rheometric Mechanical Spectrometer (RMS). The polymerization reaction was found to be very fast such that it completed within 6 minutes as could be detected by following the mixing torque which reached to a steady state after passing a maximum. These results suggest that there is a reaction time above which the viscoelastic behavior of the samples almost remained unchanged, while the viscosity and elasticity of the samples continue to decrease with polymerization reaction time as a result of thermochemical degradation.
first_indexed 2024-12-16T23:19:17Z
format Article
id doaj.art-c32b3223fa0347549496c7a99cf1c1d0
institution Directory Open Access Journal
issn 2423-4087
2423-4079
language English
last_indexed 2024-12-16T23:19:17Z
publishDate 2015-05-01
publisher Iranian Research Organization for Science and Technology (IROST)
record_format Article
series Journal of Particle Science and Technology
spelling doaj.art-c32b3223fa0347549496c7a99cf1c1d02022-12-21T22:12:12ZengIranian Research Organization for Science and Technology (IROST)Journal of Particle Science and Technology2423-40872423-40792015-05-0112919810.22104/jpst.2015.114114Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction TimeMohammad Mahdi Salehi0Omid Moini11Polymer and Science Technology Division, Research Institute of Petroleum Industry, Tehran, IranDepartment of Chemical Engineering, College of Engineering, University of Isfahan, Isfahan, IranThe main objective of the present work was to synthesis polyamide 6 through anionic polymerization of ε-caprolactam in an internal mixer. The reaction time and the rheological properties of samples during the polymerization were studied. The samples were characterized by Thermo Gravimetry Analysis (TGA), Differential Scanning Calorimeter (DSC) and FT-IR spectrometer. The melt flow behavior and viscoelastic properties of the samples were studied by using a Rheometric Mechanical Spectrometer (RMS). The polymerization reaction was found to be very fast such that it completed within 6 minutes as could be detected by following the mixing torque which reached to a steady state after passing a maximum. These results suggest that there is a reaction time above which the viscoelastic behavior of the samples almost remained unchanged, while the viscosity and elasticity of the samples continue to decrease with polymerization reaction time as a result of thermochemical degradation.http://jpst.irost.ir/article_114_ca4c349f2a73b5481acbe5733aba10ea.pdfAnionic Polymerizationε-CaprolactamReaction timePolyamide 6
spellingShingle Mohammad Mahdi Salehi
Omid Moini
Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction Time
Journal of Particle Science and Technology
Anionic Polymerization
ε-Caprolactam
Reaction time
Polyamide 6
title Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction Time
title_full Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction Time
title_fullStr Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction Time
title_full_unstemmed Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction Time
title_short Synthesis of Polyamide 6 by Anionic Polymerization of ε-Caprolactam in an Internal Mixer: Effect of Polymerization Reaction Time
title_sort synthesis of polyamide 6 by anionic polymerization of ε caprolactam in an internal mixer effect of polymerization reaction time
topic Anionic Polymerization
ε-Caprolactam
Reaction time
Polyamide 6
url http://jpst.irost.ir/article_114_ca4c349f2a73b5481acbe5733aba10ea.pdf
work_keys_str_mv AT mohammadmahdisalehi synthesisofpolyamide6byanionicpolymerizationofecaprolactaminaninternalmixereffectofpolymerizationreactiontime
AT omidmoini synthesisofpolyamide6byanionicpolymerizationofecaprolactaminaninternalmixereffectofpolymerizationreactiontime