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A flexible wearable phase change composite with electro-/photo-thermal heating for personal thermal management and human body motion detection
[Display omitted] •The highly conductive SSPCCs are prepared by film formation and pressing.•Flexible SSPCCs show excellent mechanical properties compared to classical rigid PCMs.•SSPCCs show good thermal management and electrothermal/photothermal conversion.•Dual CNT-rich layers enable the function...
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Published in: | Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2024-04, Vol.486, p.150443, Article 150443 |
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container_title | Chemical engineering journal (Lausanne, Switzerland : 1996) |
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creator | Luo, Tianwen Kong, Lingli Li, Luji Lu, Junjie Yu, Zhiyu Lin, Baofeng Fu, Lihua Xu, Chuanhui |
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•The highly conductive SSPCCs are prepared by film formation and pressing.•Flexible SSPCCs show excellent mechanical properties compared to classical rigid PCMs.•SSPCCs show good thermal management and electrothermal/photothermal conversion.•Dual CNT-rich layers enable the functional integration of the SSPCCs.
There is an urgent need to develop flexible materials with electrothermal/photothermal conversion and energy storage/release capabilities to meet the requirement of wearable personal thermal management (PTM) and health monitoring. Here, sandwich-structured phase change composites (SSPCCs) with PTM and health monitoring were prepared through film-forming and pressing process, in which a poly (ethylene vinyl acetate) (EVA)/poly (ethylene glycol) (PEG) composite was the middle layer, and waterborne polyurethane (WPU)/carbon nanotubes (CNTs) films were the top and bottom layers. The electrical conductivity and tensile strength of the two outer layers with 3 phr CNTs can achieve 2.83 S/m and 12.96 MPa, respectively. Due to the multiple synergistic effects of sandwich structure, the SSPCCs exhibit excellent flexibility with an elongation at break of approximately 1173 %, good stability and durability of 500 cycles and admirable electro-/photo-thermal heating performance (∼40 °C at 7 V or NIR light power of 50 mW/cm2). In addition, the inner layer, where the flexible EVA hold PEG well, has a melting latent heat of 71.45 J/g and freezing latent heat of 65.79 J/g in the phase change process as the mass ratio of PEG reached 50 wt%. The prepared composites show good abilities of information encryption and motions monitoring, which turns out great promising applications in wearable personal thermal management and medical devices. |
doi_str_mv | 10.1016/j.cej.2024.150443 |
format | article |
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•The highly conductive SSPCCs are prepared by film formation and pressing.•Flexible SSPCCs show excellent mechanical properties compared to classical rigid PCMs.•SSPCCs show good thermal management and electrothermal/photothermal conversion.•Dual CNT-rich layers enable the functional integration of the SSPCCs.
There is an urgent need to develop flexible materials with electrothermal/photothermal conversion and energy storage/release capabilities to meet the requirement of wearable personal thermal management (PTM) and health monitoring. Here, sandwich-structured phase change composites (SSPCCs) with PTM and health monitoring were prepared through film-forming and pressing process, in which a poly (ethylene vinyl acetate) (EVA)/poly (ethylene glycol) (PEG) composite was the middle layer, and waterborne polyurethane (WPU)/carbon nanotubes (CNTs) films were the top and bottom layers. The electrical conductivity and tensile strength of the two outer layers with 3 phr CNTs can achieve 2.83 S/m and 12.96 MPa, respectively. Due to the multiple synergistic effects of sandwich structure, the SSPCCs exhibit excellent flexibility with an elongation at break of approximately 1173 %, good stability and durability of 500 cycles and admirable electro-/photo-thermal heating performance (∼40 °C at 7 V or NIR light power of 50 mW/cm2). In addition, the inner layer, where the flexible EVA hold PEG well, has a melting latent heat of 71.45 J/g and freezing latent heat of 65.79 J/g in the phase change process as the mass ratio of PEG reached 50 wt%. The prepared composites show good abilities of information encryption and motions monitoring, which turns out great promising applications in wearable personal thermal management and medical devices.</description><identifier>ISSN: 1385-8947</identifier><identifier>DOI: 10.1016/j.cej.2024.150443</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Electrical properties ; Multifunctional composites ; Personal thermal management ; Phase change materials</subject><ispartof>Chemical engineering journal (Lausanne, Switzerland : 1996), 2024-04, Vol.486, p.150443, Article 150443</ispartof><rights>2024 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c249t-eb61c0bd489357a90c37febb27d18b492cd294c829b135a5ecc96c0e1d1e17953</cites><orcidid>0000-0002-1212-3636</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Luo, Tianwen</creatorcontrib><creatorcontrib>Kong, Lingli</creatorcontrib><creatorcontrib>Li, Luji</creatorcontrib><creatorcontrib>Lu, Junjie</creatorcontrib><creatorcontrib>Yu, Zhiyu</creatorcontrib><creatorcontrib>Lin, Baofeng</creatorcontrib><creatorcontrib>Fu, Lihua</creatorcontrib><creatorcontrib>Xu, Chuanhui</creatorcontrib><title>A flexible wearable phase change composite with electro-/photo-thermal heating for personal thermal management and human body motion detection</title><title>Chemical engineering journal (Lausanne, Switzerland : 1996)</title><description>[Display omitted]
•The highly conductive SSPCCs are prepared by film formation and pressing.•Flexible SSPCCs show excellent mechanical properties compared to classical rigid PCMs.•SSPCCs show good thermal management and electrothermal/photothermal conversion.•Dual CNT-rich layers enable the functional integration of the SSPCCs.
There is an urgent need to develop flexible materials with electrothermal/photothermal conversion and energy storage/release capabilities to meet the requirement of wearable personal thermal management (PTM) and health monitoring. Here, sandwich-structured phase change composites (SSPCCs) with PTM and health monitoring were prepared through film-forming and pressing process, in which a poly (ethylene vinyl acetate) (EVA)/poly (ethylene glycol) (PEG) composite was the middle layer, and waterborne polyurethane (WPU)/carbon nanotubes (CNTs) films were the top and bottom layers. The electrical conductivity and tensile strength of the two outer layers with 3 phr CNTs can achieve 2.83 S/m and 12.96 MPa, respectively. Due to the multiple synergistic effects of sandwich structure, the SSPCCs exhibit excellent flexibility with an elongation at break of approximately 1173 %, good stability and durability of 500 cycles and admirable electro-/photo-thermal heating performance (∼40 °C at 7 V or NIR light power of 50 mW/cm2). In addition, the inner layer, where the flexible EVA hold PEG well, has a melting latent heat of 71.45 J/g and freezing latent heat of 65.79 J/g in the phase change process as the mass ratio of PEG reached 50 wt%. The prepared composites show good abilities of information encryption and motions monitoring, which turns out great promising applications in wearable personal thermal management and medical devices.</description><subject>Electrical properties</subject><subject>Multifunctional composites</subject><subject>Personal thermal management</subject><subject>Phase change materials</subject><issn>1385-8947</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9UMlOwzAU9AEkSuEDuPkHktqJs1icqopNQuICZ8vLS-MoiSPbLP0JvhlXhSunGc1oRqNB6IaSnBJab4Zcw5AXpGA5rQhj5Rla0bKtspaz5gJdhjAQQmpO-Qp9b3E3wpdVI-BPkF4eydLLAFj3ct4ncNPigo3Jt7HHMIKO3mWbpXfRZbEHP8kR9yCjnfe4cx4v4IObk_hnTnKWe5hgjljOBvfvScDKmQOeXLRuxgZiak3sCp13cgxw_Ytr9HZ_97p7zJ5fHp522-dMF4zHDFRNNVGGtbysGsmJLpsOlCoaQ1vFeKFNwZluC65oWckKtOa1JkANBdrwqlwjeurV3oXgoROLt5P0B0GJOJ4oBpFOFMcTxenElLk9ZSAN-7DgRdAWZg3G-rReGGf_Sf8AFLp_0w</recordid><startdate>20240415</startdate><enddate>20240415</enddate><creator>Luo, Tianwen</creator><creator>Kong, Lingli</creator><creator>Li, Luji</creator><creator>Lu, Junjie</creator><creator>Yu, Zhiyu</creator><creator>Lin, Baofeng</creator><creator>Fu, Lihua</creator><creator>Xu, Chuanhui</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-1212-3636</orcidid></search><sort><creationdate>20240415</creationdate><title>A flexible wearable phase change composite with electro-/photo-thermal heating for personal thermal management and human body motion detection</title><author>Luo, Tianwen ; Kong, Lingli ; Li, Luji ; Lu, Junjie ; Yu, Zhiyu ; Lin, Baofeng ; Fu, Lihua ; Xu, Chuanhui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c249t-eb61c0bd489357a90c37febb27d18b492cd294c829b135a5ecc96c0e1d1e17953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Electrical properties</topic><topic>Multifunctional composites</topic><topic>Personal thermal management</topic><topic>Phase change materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Luo, Tianwen</creatorcontrib><creatorcontrib>Kong, Lingli</creatorcontrib><creatorcontrib>Li, Luji</creatorcontrib><creatorcontrib>Lu, Junjie</creatorcontrib><creatorcontrib>Yu, Zhiyu</creatorcontrib><creatorcontrib>Lin, Baofeng</creatorcontrib><creatorcontrib>Fu, Lihua</creatorcontrib><creatorcontrib>Xu, Chuanhui</creatorcontrib><collection>CrossRef</collection><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Luo, Tianwen</au><au>Kong, Lingli</au><au>Li, Luji</au><au>Lu, Junjie</au><au>Yu, Zhiyu</au><au>Lin, Baofeng</au><au>Fu, Lihua</au><au>Xu, Chuanhui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A flexible wearable phase change composite with electro-/photo-thermal heating for personal thermal management and human body motion detection</atitle><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle><date>2024-04-15</date><risdate>2024</risdate><volume>486</volume><spage>150443</spage><pages>150443-</pages><artnum>150443</artnum><issn>1385-8947</issn><abstract>[Display omitted]
•The highly conductive SSPCCs are prepared by film formation and pressing.•Flexible SSPCCs show excellent mechanical properties compared to classical rigid PCMs.•SSPCCs show good thermal management and electrothermal/photothermal conversion.•Dual CNT-rich layers enable the functional integration of the SSPCCs.
There is an urgent need to develop flexible materials with electrothermal/photothermal conversion and energy storage/release capabilities to meet the requirement of wearable personal thermal management (PTM) and health monitoring. Here, sandwich-structured phase change composites (SSPCCs) with PTM and health monitoring were prepared through film-forming and pressing process, in which a poly (ethylene vinyl acetate) (EVA)/poly (ethylene glycol) (PEG) composite was the middle layer, and waterborne polyurethane (WPU)/carbon nanotubes (CNTs) films were the top and bottom layers. The electrical conductivity and tensile strength of the two outer layers with 3 phr CNTs can achieve 2.83 S/m and 12.96 MPa, respectively. Due to the multiple synergistic effects of sandwich structure, the SSPCCs exhibit excellent flexibility with an elongation at break of approximately 1173 %, good stability and durability of 500 cycles and admirable electro-/photo-thermal heating performance (∼40 °C at 7 V or NIR light power of 50 mW/cm2). In addition, the inner layer, where the flexible EVA hold PEG well, has a melting latent heat of 71.45 J/g and freezing latent heat of 65.79 J/g in the phase change process as the mass ratio of PEG reached 50 wt%. The prepared composites show good abilities of information encryption and motions monitoring, which turns out great promising applications in wearable personal thermal management and medical devices.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.cej.2024.150443</doi><orcidid>https://orcid.org/0000-0002-1212-3636</orcidid></addata></record> |
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subjects | Electrical properties Multifunctional composites Personal thermal management Phase change materials |
title | A flexible wearable phase change composite with electro-/photo-thermal heating for personal thermal management and human body motion detection |
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