Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modifications
Abstract Polypropylene (PP) and multi‐walled carbon nanotubes (MWCNTs) composites were prepared by melt‐mixing with two types of MWCNTs of varying agglomerate size. Agglomerate dominated dispersion was observed in the PP matrix, wherein N‐MWCNTs exhibit a finer dispersion as compared to D‐MWCNTs. Fu...
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| Format: | Article |
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Wiley
2021-10-01
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| Series: | SPE Polymers |
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| Online Access: | https://doi.org/10.1002/pls2.10051 |
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| author | Joyita Banerjee Rajarshi Samajdar Sreenivas Kummara Ajay S. Panwar Kingsuk Mukhopadhyay Arvind K. Saxena Arup R. Bhattacharyya |
| author_facet | Joyita Banerjee Rajarshi Samajdar Sreenivas Kummara Ajay S. Panwar Kingsuk Mukhopadhyay Arvind K. Saxena Arup R. Bhattacharyya |
| author_sort | Joyita Banerjee |
| collection | DOAJ |
| description | Abstract Polypropylene (PP) and multi‐walled carbon nanotubes (MWCNTs) composites were prepared by melt‐mixing with two types of MWCNTs of varying agglomerate size. Agglomerate dominated dispersion was observed in the PP matrix, wherein N‐MWCNTs exhibit a finer dispersion as compared to D‐MWCNTs. Further, MWCNTs were encapsulated by Li‐salt of 6‐amino caproic acid in various proportions along with PP‐g‐maleic anhydride in order to achieve finer MWCNTs dispersion. Thermogravimetric analysis exhibited an increase in onset of degradation temperature and higher residual weight (%) at 500 °C of PP with increased MWCNTs concentration, which suggests the formation of a thicker “interphase.” Glass transition temperature of the PP phase was increased monotonically as a function of unmodified MWCNTs concentration, which suggests a strong interfacial interaction between PP and MWCNTs. An extensive analysis was carried out with modified MWCNTs based PP composites. Moreover, MWCNTs act as a strong hetero‐nucleating agent manifesting in smaller spherulite size of PP, wherein bulk crystallization temperature is increased to ~130 °C of the PP phase at 5 wt% MWCNTs content. The influence of unmodified and modified MWCNTs on the interaction between the PP chains and MWCNTs in the amorphous phase as well as in the crystalline domains are analyzed in PP/MWCNTs composites. |
| first_indexed | 2024-04-12T18:05:22Z |
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| id | doaj.art-8dbee442edd04b338fc351dec9db3389 |
| institution | Directory Open Access Journal |
| issn | 2690-3857 |
| language | English |
| last_indexed | 2024-04-12T18:05:22Z |
| publishDate | 2021-10-01 |
| publisher | Wiley |
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| series | SPE Polymers |
| spelling | doaj.art-8dbee442edd04b338fc351dec9db33892022-12-22T03:22:00ZengWileySPE Polymers2690-38572021-10-012425727510.1002/pls2.10051Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modificationsJoyita Banerjee0Rajarshi Samajdar1Sreenivas Kummara2Ajay S. Panwar3Kingsuk Mukhopadhyay4Arvind K. Saxena5Arup R. Bhattacharyya6Department of Metallurgical Engineering and Materials Science Indian Institute of Technology Bombay Mumbai IndiaDepartment of Chemical Engineering Institute of Chemical Technology Mumbai IndiaDepartment of Metallurgical Engineering and Materials Science Indian Institute of Technology Bombay Mumbai IndiaDepartment of Metallurgical Engineering and Materials Science Indian Institute of Technology Bombay Mumbai IndiaNanoscience & Technology Division Defence Materials and Stores Research and Development Establishment (DMSRDE) Kanpur IndiaNanoscience & Technology Division Defence Materials and Stores Research and Development Establishment (DMSRDE) Kanpur IndiaDepartment of Metallurgical Engineering and Materials Science Indian Institute of Technology Bombay Mumbai IndiaAbstract Polypropylene (PP) and multi‐walled carbon nanotubes (MWCNTs) composites were prepared by melt‐mixing with two types of MWCNTs of varying agglomerate size. Agglomerate dominated dispersion was observed in the PP matrix, wherein N‐MWCNTs exhibit a finer dispersion as compared to D‐MWCNTs. Further, MWCNTs were encapsulated by Li‐salt of 6‐amino caproic acid in various proportions along with PP‐g‐maleic anhydride in order to achieve finer MWCNTs dispersion. Thermogravimetric analysis exhibited an increase in onset of degradation temperature and higher residual weight (%) at 500 °C of PP with increased MWCNTs concentration, which suggests the formation of a thicker “interphase.” Glass transition temperature of the PP phase was increased monotonically as a function of unmodified MWCNTs concentration, which suggests a strong interfacial interaction between PP and MWCNTs. An extensive analysis was carried out with modified MWCNTs based PP composites. Moreover, MWCNTs act as a strong hetero‐nucleating agent manifesting in smaller spherulite size of PP, wherein bulk crystallization temperature is increased to ~130 °C of the PP phase at 5 wt% MWCNTs content. The influence of unmodified and modified MWCNTs on the interaction between the PP chains and MWCNTs in the amorphous phase as well as in the crystalline domains are analyzed in PP/MWCNTs composites.https://doi.org/10.1002/pls2.10051crystallizationinterphasePOMPP/MWCNTs compositesTgTGA |
| spellingShingle | Joyita Banerjee Rajarshi Samajdar Sreenivas Kummara Ajay S. Panwar Kingsuk Mukhopadhyay Arvind K. Saxena Arup R. Bhattacharyya Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modifications SPE Polymers crystallization interphase POM PP/MWCNTs composites Tg TGA |
| title | Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modifications |
| title_full | Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modifications |
| title_fullStr | Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modifications |
| title_full_unstemmed | Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modifications |
| title_short | Carbon nanotubes interaction with amorphous and semi‐crystalline domains of polypropylene in melt‐mixed composites: Influence of multiwall carbon nanotubes agglomerate and their modifications |
| title_sort | carbon nanotubes interaction with amorphous and semi crystalline domains of polypropylene in melt mixed composites influence of multiwall carbon nanotubes agglomerate and their modifications |
| topic | crystallization interphase POM PP/MWCNTs composites Tg TGA |
| url | https://doi.org/10.1002/pls2.10051 |
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