Impact of anhydride compatibilizer on dielectric performance and chemical structure of polypropylene/thermoplastic polyurethane blends
Impact of anhydride compatibilizer on dielectric performance and chemical structure of polypropylene/thermoplastic polyurethane blends
In this study isotactic polypropylene (iPP) was blended with 30wt.% thermoplastic polyurethane (TPU) and maleic anhydride-grafted-polypropylene (MA-PP) as a compatibilizer, aiming for improved brittleness, while retaining acceptable thermal and electrical performance. The chemical structure, thermal and dielectric properties of the PP/MA-PP/TPU blends are analysed using Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), and Dielectric Spectroscopy (DS). The results show that TPU and MA do not significantly affect the melting and crystallisation temperatures of the blends, especially when MA content is less than 3wt.%. The MA crosslinks with the TPU promoting compatibilization however, the highest MA content is shown to result in excess unreacted anhydride groups. Addition of TPU increases the dielectric permittivity (ε^') and losses (ε^'') of the blend, while the MA increased them slightly further. At frequencies below 10-1 Hz, the excess unreacted anhydrides resulted in reduced ε^' and ε^'' values.
Wang, Xiaobing
0e7bc8ca-28bf-47c9-bab0-8d613c158acd
Vryonis, Orestis
4affde05-88f2-436f-b036-dceedf31ea9c
Saeedi, Istebreq
6df4dfcf-9bb8-4edc-952e-ccc4841f7b54
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
13 May 2025
Wang, Xiaobing
0e7bc8ca-28bf-47c9-bab0-8d613c158acd
Vryonis, Orestis
4affde05-88f2-436f-b036-dceedf31ea9c
Saeedi, Istebreq
6df4dfcf-9bb8-4edc-952e-ccc4841f7b54
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Wang, Xiaobing, Vryonis, Orestis, Saeedi, Istebreq and Andritsch, Thomas
(2025)
Impact of anhydride compatibilizer on dielectric performance and chemical structure of polypropylene/thermoplastic polyurethane blends.
2025 IEEE DEIS Conference on Electrical Insulation and Dielectric Phenomena, Conference Centre at the University of Manchester, Nancy Rothwell Building, Manchester, United Kingdom.
14 - 17 Sep 2025.
(doi:10.1109/CEIDP61707.2025.11218601).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this study isotactic polypropylene (iPP) was blended with 30wt.% thermoplastic polyurethane (TPU) and maleic anhydride-grafted-polypropylene (MA-PP) as a compatibilizer, aiming for improved brittleness, while retaining acceptable thermal and electrical performance. The chemical structure, thermal and dielectric properties of the PP/MA-PP/TPU blends are analysed using Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), and Dielectric Spectroscopy (DS). The results show that TPU and MA do not significantly affect the melting and crystallisation temperatures of the blends, especially when MA content is less than 3wt.%. The MA crosslinks with the TPU promoting compatibilization however, the highest MA content is shown to result in excess unreacted anhydride groups. Addition of TPU increases the dielectric permittivity (ε^') and losses (ε^'') of the blend, while the MA increased them slightly further. At frequencies below 10-1 Hz, the excess unreacted anhydrides resulted in reduced ε^' and ε^'' values.
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Published date: 13 May 2025
Venue - Dates:
2025 IEEE DEIS Conference on Electrical Insulation and Dielectric Phenomena, Conference Centre at the University of Manchester, Nancy Rothwell Building, Manchester, United Kingdom, 2025-09-14 - 2025-09-17
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Local EPrints ID: 507235
URI: http://eprints.soton.ac.uk/id/eprint/507235
PURE UUID: f120f997-8377-4d9c-9537-dd4e651f2d32
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Date deposited: 02 Dec 2025 17:59
Last modified: 03 Dec 2025 03:03
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Author:
Xiaobing Wang
Author:
Orestis Vryonis
Author:
Istebreq Saeedi
Author:
Thomas Andritsch
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