Modification of rheological responses under elongational flow at non-isothermal condition

Rheological responses under elongational flow at non-isothermal condition are significantly important for actual polymer processing. Drawdown force, defined as a force required to stretch a molten polymer, was evaluated as the non-isothermal rheological response using polypropylene (PP) in this stud...

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Main Authors: Yamaguchi, Masayuki, Seemork, Jiraporn, Phulkerd, Panitha, Ali, Mohd Amran Bin Md
Format: Conference or Workshop Item
Language:English
Published: 2023
Online Access:http://eprints.utem.edu.my/id/eprint/27916/1/Modification%20of%20Rheological%20Responses%20under%20Elongational%20Flow%20at%20Non-Isothermal%20CONDITON.pdf
http://eprints.utem.edu.my/id/eprint/27916/
https://pubs.aip.org/aip/acp/article-abstract/2997/1/020004/2895373/Modification-of-rheological-responses-under?redirectedFrom=fulltext
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spelling my.utem.eprints.279162024-09-20T16:30:00Z http://eprints.utem.edu.my/id/eprint/27916/ Modification of rheological responses under elongational flow at non-isothermal condition Yamaguchi, Masayuki Seemork, Jiraporn Phulkerd, Panitha Ali, Mohd Amran Bin Md Rheological responses under elongational flow at non-isothermal condition are significantly important for actual polymer processing. Drawdown force, defined as a force required to stretch a molten polymer, was evaluated as the non-isothermal rheological response using polypropylene (PP) in this study. It was found that the die length affected the drawdown force, which was pronounced for a system having a long relaxation time. The prompt crystallization after passing through a long die would be responsible for this phenomenon. Furthermore, the addition of a nucleating agent was quite effective to increase the drawdown force, at which the shape of a nucleating agent has to be considered. The accelerated crystallization by the addition of a fibrous nucleating agent resulted in the pseudo shish-kebab structure, leading to high modulus in the flow direction. Finally, the addition of a low-viscous acrylate polymer was found to enhance the drawdown force of PP. Due to the prompt solidification of the acrylate polymer under a rapid cooling condition, the dispersions acted as rigid fibers before the crystallization of PP. These modification methods will be available to improve the processability at various processing operations at which a molten polymer is stretched at non-isothermal condition. 2023 Conference or Workshop Item PeerReviewed text en http://eprints.utem.edu.my/id/eprint/27916/1/Modification%20of%20Rheological%20Responses%20under%20Elongational%20Flow%20at%20Non-Isothermal%20CONDITON.pdf Yamaguchi, Masayuki and Seemork, Jiraporn and Phulkerd, Panitha and Ali, Mohd Amran Bin Md (2023) Modification of rheological responses under elongational flow at non-isothermal condition. In: 9th International Conference on Novel Trends in Rheology, 26 July 2023through 27 July 2023, Zlin. https://pubs.aip.org/aip/acp/article-abstract/2997/1/020004/2895373/Modification-of-rheological-responses-under?redirectedFrom=fulltext
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description Rheological responses under elongational flow at non-isothermal condition are significantly important for actual polymer processing. Drawdown force, defined as a force required to stretch a molten polymer, was evaluated as the non-isothermal rheological response using polypropylene (PP) in this study. It was found that the die length affected the drawdown force, which was pronounced for a system having a long relaxation time. The prompt crystallization after passing through a long die would be responsible for this phenomenon. Furthermore, the addition of a nucleating agent was quite effective to increase the drawdown force, at which the shape of a nucleating agent has to be considered. The accelerated crystallization by the addition of a fibrous nucleating agent resulted in the pseudo shish-kebab structure, leading to high modulus in the flow direction. Finally, the addition of a low-viscous acrylate polymer was found to enhance the drawdown force of PP. Due to the prompt solidification of the acrylate polymer under a rapid cooling condition, the dispersions acted as rigid fibers before the crystallization of PP. These modification methods will be available to improve the processability at various processing operations at which a molten polymer is stretched at non-isothermal condition.
format Conference or Workshop Item
author Yamaguchi, Masayuki
Seemork, Jiraporn
Phulkerd, Panitha
Ali, Mohd Amran Bin Md
spellingShingle Yamaguchi, Masayuki
Seemork, Jiraporn
Phulkerd, Panitha
Ali, Mohd Amran Bin Md
Modification of rheological responses under elongational flow at non-isothermal condition
author_facet Yamaguchi, Masayuki
Seemork, Jiraporn
Phulkerd, Panitha
Ali, Mohd Amran Bin Md
author_sort Yamaguchi, Masayuki
title Modification of rheological responses under elongational flow at non-isothermal condition
title_short Modification of rheological responses under elongational flow at non-isothermal condition
title_full Modification of rheological responses under elongational flow at non-isothermal condition
title_fullStr Modification of rheological responses under elongational flow at non-isothermal condition
title_full_unstemmed Modification of rheological responses under elongational flow at non-isothermal condition
title_sort modification of rheological responses under elongational flow at non-isothermal condition
publishDate 2023
url http://eprints.utem.edu.my/id/eprint/27916/1/Modification%20of%20Rheological%20Responses%20under%20Elongational%20Flow%20at%20Non-Isothermal%20CONDITON.pdf
http://eprints.utem.edu.my/id/eprint/27916/
https://pubs.aip.org/aip/acp/article-abstract/2997/1/020004/2895373/Modification-of-rheological-responses-under?redirectedFrom=fulltext
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score 13.214268