Synthesis of linear poly-cardanol and its application in rubber materials

People have been trying to find natural products that can replace rubber due to the land occupied by rubber planting and the environmental pollution caused by waste rubber. Herein, the linear poly-cardanol (LPCA) is obtained by undergoing a Friedel-Crafts alkylation reaction at 100 °C for 2 h at the...

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Autores principales:	Wei Qian, Jinling Liu, Yuxia Zhang, Chongyi Chi, Denglong Chen, Qinhui Chen
Formato:	article
Lenguaje:	EN
Publicado:	Budapest University of Technology 2022
Materias:	polymer blends and alloys cardanol friedel-crafts reaction rubber crystallization Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/03aea2639f3348679e6ffe354b68541e
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spelling	oai:doaj.org-article:03aea2639f3348679e6ffe354b68541e2021-11-24T10:46:50ZSynthesis of linear poly-cardanol and its application in rubber materials1788-618X10.3144/expresspolymlett.2022.6https://doaj.org/article/03aea2639f3348679e6ffe354b68541e2022-01-01T00:00:00Zhttp://www.expresspolymlett.com/letolt.php?file=EPL-0011510&mi=cdhttps://doaj.org/toc/1788-618XPeople have been trying to find natural products that can replace rubber due to the land occupied by rubber planting and the environmental pollution caused by waste rubber. Herein, the linear poly-cardanol (LPCA) is obtained by undergoing a Friedel-Crafts alkylation reaction at 100 °C for 2 h at the catalyst of 5% of p-toluene sulfonate. The Mw of LPCA is about 4·104, and its polymeric degree is about 133. The weakening of 3009, 1263, and 1154 cm–1 in IR spectrum, the blue shift of UV absorption, the new chemical shifts of protons in 1H-NMR spectrum all certify the formation of LPCA. LPCA has obvious characteristics of elastomer. Its glass transition temperature (Tg) is –20.7 °C on the DSC curve. During the cocrosslinking of LPCA and liquid polyisoprene rubber (LIR), LPCA induces the crystallization of long LIR chain segments, which is confirmed by the transition peaks of the DSC curve in 40°C. This partial crystal structure is beneficial for LPCA/LIR blends to possess high strength. The tensile strength and the elongation at break of LPCA/LIR blend with 20% of LIR are about 2.04 MPa and 92%, respectively. LPCA possesses flexible alkyl chains and hydrophilic phenolic hydroxyl groups, so it can be used as a plasticizer just like LIR and compatibilizer at the same time. This study affords a possible way for renewable cardanol to replace rubber partially or completely.Wei QianJinling LiuYuxia ZhangChongyi ChiDenglong ChenQinhui ChenBudapest University of Technology articlepolymer blends and alloyscardanolfriedel-crafts reactionrubbercrystallizationMaterials of engineering and construction. Mechanics of materialsTA401-492Chemical technologyTP1-1185ENeXPRESS Polymer Letters, Vol 16, Iss 1, Pp 75-84 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	polymer blends and alloys cardanol friedel-crafts reaction rubber crystallization Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185
spellingShingle	polymer blends and alloys cardanol friedel-crafts reaction rubber crystallization Materials of engineering and construction. Mechanics of materials TA401-492 Chemical technology TP1-1185 Wei Qian Jinling Liu Yuxia Zhang Chongyi Chi Denglong Chen Qinhui Chen Synthesis of linear poly-cardanol and its application in rubber materials
description	People have been trying to find natural products that can replace rubber due to the land occupied by rubber planting and the environmental pollution caused by waste rubber. Herein, the linear poly-cardanol (LPCA) is obtained by undergoing a Friedel-Crafts alkylation reaction at 100 °C for 2 h at the catalyst of 5% of p-toluene sulfonate. The Mw of LPCA is about 4·104, and its polymeric degree is about 133. The weakening of 3009, 1263, and 1154 cm–1 in IR spectrum, the blue shift of UV absorption, the new chemical shifts of protons in 1H-NMR spectrum all certify the formation of LPCA. LPCA has obvious characteristics of elastomer. Its glass transition temperature (Tg) is –20.7 °C on the DSC curve. During the cocrosslinking of LPCA and liquid polyisoprene rubber (LIR), LPCA induces the crystallization of long LIR chain segments, which is confirmed by the transition peaks of the DSC curve in 40°C. This partial crystal structure is beneficial for LPCA/LIR blends to possess high strength. The tensile strength and the elongation at break of LPCA/LIR blend with 20% of LIR are about 2.04 MPa and 92%, respectively. LPCA possesses flexible alkyl chains and hydrophilic phenolic hydroxyl groups, so it can be used as a plasticizer just like LIR and compatibilizer at the same time. This study affords a possible way for renewable cardanol to replace rubber partially or completely.
format	article
author	Wei Qian Jinling Liu Yuxia Zhang Chongyi Chi Denglong Chen Qinhui Chen
author_facet	Wei Qian Jinling Liu Yuxia Zhang Chongyi Chi Denglong Chen Qinhui Chen
author_sort	Wei Qian
title	Synthesis of linear poly-cardanol and its application in rubber materials
title_short	Synthesis of linear poly-cardanol and its application in rubber materials
title_full	Synthesis of linear poly-cardanol and its application in rubber materials
title_fullStr	Synthesis of linear poly-cardanol and its application in rubber materials
title_full_unstemmed	Synthesis of linear poly-cardanol and its application in rubber materials
title_sort	synthesis of linear poly-cardanol and its application in rubber materials
publisher	Budapest University of Technology
publishDate	2022
url	https://doaj.org/article/03aea2639f3348679e6ffe354b68541e
work_keys_str_mv	AT weiqian synthesisoflinearpolycardanolanditsapplicationinrubbermaterials AT jinlingliu synthesisoflinearpolycardanolanditsapplicationinrubbermaterials AT yuxiazhang synthesisoflinearpolycardanolanditsapplicationinrubbermaterials AT chongyichi synthesisoflinearpolycardanolanditsapplicationinrubbermaterials AT denglongchen synthesisoflinearpolycardanolanditsapplicationinrubbermaterials AT qinhuichen synthesisoflinearpolycardanolanditsapplicationinrubbermaterials
_version_	1718415027852017664

Synthesis of linear poly-cardanol and its application in rubber materials

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