Sulfonated poly(arylene ether) membranes containing perfluorocyclobutyl and ethynyl groups: Increased mechanical strength through chain extension and crosslinking
Novel extendable and crosslinkable sulfonated poly(arylene ether) copolymers (ESHQx-CMy) were synthesized. These copolymers utilized 4-[trifluorovinyl(oxy)]phenol (TFP) as a linker to extend the polymer and provide better elongation at break and mechanical strength. The extension moiety was successf...
Gespeichert in:
Veröffentlicht in: | Journal of membrane science 2014-04, Vol.456, p.49-56 |
---|---|
Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | 56 |
---|---|
container_issue | |
container_start_page | 49 |
container_title | Journal of membrane science |
container_volume | 456 |
creator | Lee, Su-Bin Kim, Young-Jea Ko, Un Min, Cheong-Min Ahn, Min-Kyoon Chung, Sang-Joon Moon, Il-Shik Lee, Jae-Suk |
description | Novel extendable and crosslinkable sulfonated poly(arylene ether) copolymers (ESHQx-CMy) were synthesized. These copolymers utilized 4-[trifluorovinyl(oxy)]phenol (TFP) as a linker to extend the polymer and provide better elongation at break and mechanical strength. The extension moiety was successfully synthesized and introduced at the chain end of the sulfonated poly(arylene ether) copolymers to induce a strong interaction of the copolymer while maintaining its flexibility. The extension and crosslinking reactions were performed by thermal curing at 200°C, and confirmed by FT-IR and chemical resistance testing. The synthesized copolymers (ESHQx-CMy) possessed reasonable thermal and chemical stability. In addition, the elongation at break was improved to 14.2%, with a higher tensile strength (73.6MPa) than other sulfonated poly(arylene ether) copolymers containing only a crosslinked moiety (CM). Importantly, these novel copolymers also displayed the highest proton conductivity (0.145S/cm) than Nafion 212 (0.093S/cm) at room temperature.
Novel polymer electrolyte membranes (ESHQx-CMy) were synthesized with the extensible and crosslinkable moieties for fuel cell application. The synthesized copolymers not only have strong interactions but also are flexible because of the extension of the polymer, displaying increased elongation at break (14.2%) and mechanical strength (73.6MPa). Therefore, the ESHQx-CMy membranes could have higher proton conductivity (0.145S/cm) than that of Nafion 212. [Display omitted]
•Chain-extension moiety, 4-[trifluorovinyl(oxy)]phenol (TFP), was successfully synthesized and introduced at the end of the polymer.•Chain-extension displayed similar characteristics when compared with crosslinking with the additional trait of increasing molecular weight while having a flexible chain.•Extended and crosslinked polymer had better toughness with improved elongation at break and high tensile strength.•Synthesized polymer electrolyte membrane had higher proton conductivity (0.145S/cm) than that of Nafion 212 (0.093S/cm). |
doi_str_mv | 10.1016/j.memsci.2013.12.080 |
format | Article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1800426836</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0376738814000040</els_id><sourcerecordid>1800426836</sourcerecordid><originalsourceid>FETCH-LOGICAL-c439t-f1d5cfabc7cb428ce3b7a64cabe6250a2d88a1d9eeeb25ad20bd816b887ebbeb3</originalsourceid><addsrcrecordid>eNqFkUtv1DAUhSMEEkPhH7DwBqksEvzIw8MCCVXQVqrEAlhbftxMPDh2sJ2K_B1-KZ5OxRJWvpLPOVf3fFX1muCGYNK_OzYzzEnbhmLCGkIbzPGTakf4wGpGKHta7TAb-npgnD-vXqR0xJgMmO931e-vqxuDlxkMWoLbLmXcHHhAkCeIb1EJVlF6SEgHn6X11h_QAnF0a4hBb9oFtebNIenNybP5Mh9iWJf0Ht16HUGmEj2DnqS3WjqUcgR_yBPKU5EdJlR-rEfwK4NPNviHJB1DSs76H2Xdy-rZKF2CV4_vRfX986dvVzf13Zfr26uPd7Vu2T7XIzGdHqXSg1Yt5RqYGmTfaqmgpx2W1HAuidkDgKKdNBQrw0mvOB9AKVDsoro85y4x_FwhZTHbpMG5cn5YkyAc45b2nPX_lw4doZhx2hVpe5Y-nBRhFEu0c2lZECxO9MRRnOmJEz1BqCj0iu3N4waZSmtjYaBt-uulnBWCLS26D2cdlGbuLURRksBrMDaCzsIE--9FfwAIKLjv</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1751203825</pqid></control><display><type>article</type><title>Sulfonated poly(arylene ether) membranes containing perfluorocyclobutyl and ethynyl groups: Increased mechanical strength through chain extension and crosslinking</title><source>Elsevier ScienceDirect Journals</source><creator>Lee, Su-Bin ; Kim, Young-Jea ; Ko, Un ; Min, Cheong-Min ; Ahn, Min-Kyoon ; Chung, Sang-Joon ; Moon, Il-Shik ; Lee, Jae-Suk</creator><creatorcontrib>Lee, Su-Bin ; Kim, Young-Jea ; Ko, Un ; Min, Cheong-Min ; Ahn, Min-Kyoon ; Chung, Sang-Joon ; Moon, Il-Shik ; Lee, Jae-Suk</creatorcontrib><description>Novel extendable and crosslinkable sulfonated poly(arylene ether) copolymers (ESHQx-CMy) were synthesized. These copolymers utilized 4-[trifluorovinyl(oxy)]phenol (TFP) as a linker to extend the polymer and provide better elongation at break and mechanical strength. The extension moiety was successfully synthesized and introduced at the chain end of the sulfonated poly(arylene ether) copolymers to induce a strong interaction of the copolymer while maintaining its flexibility. The extension and crosslinking reactions were performed by thermal curing at 200°C, and confirmed by FT-IR and chemical resistance testing. The synthesized copolymers (ESHQx-CMy) possessed reasonable thermal and chemical stability. In addition, the elongation at break was improved to 14.2%, with a higher tensile strength (73.6MPa) than other sulfonated poly(arylene ether) copolymers containing only a crosslinked moiety (CM). Importantly, these novel copolymers also displayed the highest proton conductivity (0.145S/cm) than Nafion 212 (0.093S/cm) at room temperature.
Novel polymer electrolyte membranes (ESHQx-CMy) were synthesized with the extensible and crosslinkable moieties for fuel cell application. The synthesized copolymers not only have strong interactions but also are flexible because of the extension of the polymer, displaying increased elongation at break (14.2%) and mechanical strength (73.6MPa). Therefore, the ESHQx-CMy membranes could have higher proton conductivity (0.145S/cm) than that of Nafion 212. [Display omitted]
•Chain-extension moiety, 4-[trifluorovinyl(oxy)]phenol (TFP), was successfully synthesized and introduced at the end of the polymer.•Chain-extension displayed similar characteristics when compared with crosslinking with the additional trait of increasing molecular weight while having a flexible chain.•Extended and crosslinked polymer had better toughness with improved elongation at break and high tensile strength.•Synthesized polymer electrolyte membrane had higher proton conductivity (0.145S/cm) than that of Nafion 212 (0.093S/cm).</description><identifier>ISSN: 0376-7388</identifier><identifier>EISSN: 1873-3123</identifier><identifier>DOI: 10.1016/j.memsci.2013.12.080</identifier><identifier>CODEN: JMESDO</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Breaking ; Chain-extension ; Chains (polymeric) ; Chemistry ; Colloidal state and disperse state ; Copolymers ; Corrosion resistance ; Crosslinking ; Direct energy conversion and energy accumulation ; Electrical engineering. Electrical power engineering ; Electrical power engineering ; Electrochemical conversion: primary and secondary batteries, fuel cells ; Elongation ; Energy ; Energy. Thermal use of fuels ; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc ; Ethers ; Exact sciences and technology ; Exchange resins and membranes ; Forms of application and semi-finished materials ; Fuel cell ; Fuel cells ; General and physical chemistry ; Mechanical strength ; Membranes ; Polymer electrolyte membrane ; Polymer industry, paints, wood ; Technology of polymers</subject><ispartof>Journal of membrane science, 2014-04, Vol.456, p.49-56</ispartof><rights>2014 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c439t-f1d5cfabc7cb428ce3b7a64cabe6250a2d88a1d9eeeb25ad20bd816b887ebbeb3</citedby><cites>FETCH-LOGICAL-c439t-f1d5cfabc7cb428ce3b7a64cabe6250a2d88a1d9eeeb25ad20bd816b887ebbeb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0376738814000040$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28301742$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Lee, Su-Bin</creatorcontrib><creatorcontrib>Kim, Young-Jea</creatorcontrib><creatorcontrib>Ko, Un</creatorcontrib><creatorcontrib>Min, Cheong-Min</creatorcontrib><creatorcontrib>Ahn, Min-Kyoon</creatorcontrib><creatorcontrib>Chung, Sang-Joon</creatorcontrib><creatorcontrib>Moon, Il-Shik</creatorcontrib><creatorcontrib>Lee, Jae-Suk</creatorcontrib><title>Sulfonated poly(arylene ether) membranes containing perfluorocyclobutyl and ethynyl groups: Increased mechanical strength through chain extension and crosslinking</title><title>Journal of membrane science</title><description>Novel extendable and crosslinkable sulfonated poly(arylene ether) copolymers (ESHQx-CMy) were synthesized. These copolymers utilized 4-[trifluorovinyl(oxy)]phenol (TFP) as a linker to extend the polymer and provide better elongation at break and mechanical strength. The extension moiety was successfully synthesized and introduced at the chain end of the sulfonated poly(arylene ether) copolymers to induce a strong interaction of the copolymer while maintaining its flexibility. The extension and crosslinking reactions were performed by thermal curing at 200°C, and confirmed by FT-IR and chemical resistance testing. The synthesized copolymers (ESHQx-CMy) possessed reasonable thermal and chemical stability. In addition, the elongation at break was improved to 14.2%, with a higher tensile strength (73.6MPa) than other sulfonated poly(arylene ether) copolymers containing only a crosslinked moiety (CM). Importantly, these novel copolymers also displayed the highest proton conductivity (0.145S/cm) than Nafion 212 (0.093S/cm) at room temperature.
Novel polymer electrolyte membranes (ESHQx-CMy) were synthesized with the extensible and crosslinkable moieties for fuel cell application. The synthesized copolymers not only have strong interactions but also are flexible because of the extension of the polymer, displaying increased elongation at break (14.2%) and mechanical strength (73.6MPa). Therefore, the ESHQx-CMy membranes could have higher proton conductivity (0.145S/cm) than that of Nafion 212. [Display omitted]
•Chain-extension moiety, 4-[trifluorovinyl(oxy)]phenol (TFP), was successfully synthesized and introduced at the end of the polymer.•Chain-extension displayed similar characteristics when compared with crosslinking with the additional trait of increasing molecular weight while having a flexible chain.•Extended and crosslinked polymer had better toughness with improved elongation at break and high tensile strength.•Synthesized polymer electrolyte membrane had higher proton conductivity (0.145S/cm) than that of Nafion 212 (0.093S/cm).</description><subject>Applied sciences</subject><subject>Breaking</subject><subject>Chain-extension</subject><subject>Chains (polymeric)</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Copolymers</subject><subject>Corrosion resistance</subject><subject>Crosslinking</subject><subject>Direct energy conversion and energy accumulation</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical power engineering</subject><subject>Electrochemical conversion: primary and secondary batteries, fuel cells</subject><subject>Elongation</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</subject><subject>Ethers</subject><subject>Exact sciences and technology</subject><subject>Exchange resins and membranes</subject><subject>Forms of application and semi-finished materials</subject><subject>Fuel cell</subject><subject>Fuel cells</subject><subject>General and physical chemistry</subject><subject>Mechanical strength</subject><subject>Membranes</subject><subject>Polymer electrolyte membrane</subject><subject>Polymer industry, paints, wood</subject><subject>Technology of polymers</subject><issn>0376-7388</issn><issn>1873-3123</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkUtv1DAUhSMEEkPhH7DwBqksEvzIw8MCCVXQVqrEAlhbftxMPDh2sJ2K_B1-KZ5OxRJWvpLPOVf3fFX1muCGYNK_OzYzzEnbhmLCGkIbzPGTakf4wGpGKHta7TAb-npgnD-vXqR0xJgMmO931e-vqxuDlxkMWoLbLmXcHHhAkCeIb1EJVlF6SEgHn6X11h_QAnF0a4hBb9oFtebNIenNybP5Mh9iWJf0Ht16HUGmEj2DnqS3WjqUcgR_yBPKU5EdJlR-rEfwK4NPNviHJB1DSs76H2Xdy-rZKF2CV4_vRfX986dvVzf13Zfr26uPd7Vu2T7XIzGdHqXSg1Yt5RqYGmTfaqmgpx2W1HAuidkDgKKdNBQrw0mvOB9AKVDsoro85y4x_FwhZTHbpMG5cn5YkyAc45b2nPX_lw4doZhx2hVpe5Y-nBRhFEu0c2lZECxO9MRRnOmJEz1BqCj0iu3N4waZSmtjYaBt-uulnBWCLS26D2cdlGbuLURRksBrMDaCzsIE--9FfwAIKLjv</recordid><startdate>20140415</startdate><enddate>20140415</enddate><creator>Lee, Su-Bin</creator><creator>Kim, Young-Jea</creator><creator>Ko, Un</creator><creator>Min, Cheong-Min</creator><creator>Ahn, Min-Kyoon</creator><creator>Chung, Sang-Joon</creator><creator>Moon, Il-Shik</creator><creator>Lee, Jae-Suk</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>7SE</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20140415</creationdate><title>Sulfonated poly(arylene ether) membranes containing perfluorocyclobutyl and ethynyl groups: Increased mechanical strength through chain extension and crosslinking</title><author>Lee, Su-Bin ; Kim, Young-Jea ; Ko, Un ; Min, Cheong-Min ; Ahn, Min-Kyoon ; Chung, Sang-Joon ; Moon, Il-Shik ; Lee, Jae-Suk</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c439t-f1d5cfabc7cb428ce3b7a64cabe6250a2d88a1d9eeeb25ad20bd816b887ebbeb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied sciences</topic><topic>Breaking</topic><topic>Chain-extension</topic><topic>Chains (polymeric)</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Copolymers</topic><topic>Corrosion resistance</topic><topic>Crosslinking</topic><topic>Direct energy conversion and energy accumulation</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Electrical power engineering</topic><topic>Electrochemical conversion: primary and secondary batteries, fuel cells</topic><topic>Elongation</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</topic><topic>Ethers</topic><topic>Exact sciences and technology</topic><topic>Exchange resins and membranes</topic><topic>Forms of application and semi-finished materials</topic><topic>Fuel cell</topic><topic>Fuel cells</topic><topic>General and physical chemistry</topic><topic>Mechanical strength</topic><topic>Membranes</topic><topic>Polymer electrolyte membrane</topic><topic>Polymer industry, paints, wood</topic><topic>Technology of polymers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Su-Bin</creatorcontrib><creatorcontrib>Kim, Young-Jea</creatorcontrib><creatorcontrib>Ko, Un</creatorcontrib><creatorcontrib>Min, Cheong-Min</creatorcontrib><creatorcontrib>Ahn, Min-Kyoon</creatorcontrib><creatorcontrib>Chung, Sang-Joon</creatorcontrib><creatorcontrib>Moon, Il-Shik</creatorcontrib><creatorcontrib>Lee, Jae-Suk</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Corrosion Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of membrane science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Su-Bin</au><au>Kim, Young-Jea</au><au>Ko, Un</au><au>Min, Cheong-Min</au><au>Ahn, Min-Kyoon</au><au>Chung, Sang-Joon</au><au>Moon, Il-Shik</au><au>Lee, Jae-Suk</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sulfonated poly(arylene ether) membranes containing perfluorocyclobutyl and ethynyl groups: Increased mechanical strength through chain extension and crosslinking</atitle><jtitle>Journal of membrane science</jtitle><date>2014-04-15</date><risdate>2014</risdate><volume>456</volume><spage>49</spage><epage>56</epage><pages>49-56</pages><issn>0376-7388</issn><eissn>1873-3123</eissn><coden>JMESDO</coden><abstract>Novel extendable and crosslinkable sulfonated poly(arylene ether) copolymers (ESHQx-CMy) were synthesized. These copolymers utilized 4-[trifluorovinyl(oxy)]phenol (TFP) as a linker to extend the polymer and provide better elongation at break and mechanical strength. The extension moiety was successfully synthesized and introduced at the chain end of the sulfonated poly(arylene ether) copolymers to induce a strong interaction of the copolymer while maintaining its flexibility. The extension and crosslinking reactions were performed by thermal curing at 200°C, and confirmed by FT-IR and chemical resistance testing. The synthesized copolymers (ESHQx-CMy) possessed reasonable thermal and chemical stability. In addition, the elongation at break was improved to 14.2%, with a higher tensile strength (73.6MPa) than other sulfonated poly(arylene ether) copolymers containing only a crosslinked moiety (CM). Importantly, these novel copolymers also displayed the highest proton conductivity (0.145S/cm) than Nafion 212 (0.093S/cm) at room temperature.
Novel polymer electrolyte membranes (ESHQx-CMy) were synthesized with the extensible and crosslinkable moieties for fuel cell application. The synthesized copolymers not only have strong interactions but also are flexible because of the extension of the polymer, displaying increased elongation at break (14.2%) and mechanical strength (73.6MPa). Therefore, the ESHQx-CMy membranes could have higher proton conductivity (0.145S/cm) than that of Nafion 212. [Display omitted]
•Chain-extension moiety, 4-[trifluorovinyl(oxy)]phenol (TFP), was successfully synthesized and introduced at the end of the polymer.•Chain-extension displayed similar characteristics when compared with crosslinking with the additional trait of increasing molecular weight while having a flexible chain.•Extended and crosslinked polymer had better toughness with improved elongation at break and high tensile strength.•Synthesized polymer electrolyte membrane had higher proton conductivity (0.145S/cm) than that of Nafion 212 (0.093S/cm).</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.memsci.2013.12.080</doi><tpages>8</tpages></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0376-7388 |
ispartof | Journal of membrane science, 2014-04, Vol.456, p.49-56 |
issn | 0376-7388 1873-3123 |
language | eng |
recordid | cdi_proquest_miscellaneous_1800426836 |
source | Elsevier ScienceDirect Journals |
subjects | Applied sciences Breaking Chain-extension Chains (polymeric) Chemistry Colloidal state and disperse state Copolymers Corrosion resistance Crosslinking Direct energy conversion and energy accumulation Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Elongation Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Ethers Exact sciences and technology Exchange resins and membranes Forms of application and semi-finished materials Fuel cell Fuel cells General and physical chemistry Mechanical strength Membranes Polymer electrolyte membrane Polymer industry, paints, wood Technology of polymers |
title | Sulfonated poly(arylene ether) membranes containing perfluorocyclobutyl and ethynyl groups: Increased mechanical strength through chain extension and crosslinking |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-06T21%3A38%3A25IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Sulfonated%20poly(arylene%20ether)%20membranes%20containing%20perfluorocyclobutyl%20and%20ethynyl%20groups:%20Increased%20mechanical%20strength%20through%20chain%20extension%20and%20crosslinking&rft.jtitle=Journal%20of%20membrane%20science&rft.au=Lee,%20Su-Bin&rft.date=2014-04-15&rft.volume=456&rft.spage=49&rft.epage=56&rft.pages=49-56&rft.issn=0376-7388&rft.eissn=1873-3123&rft.coden=JMESDO&rft_id=info:doi/10.1016/j.memsci.2013.12.080&rft_dat=%3Cproquest_cross%3E1800426836%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1751203825&rft_id=info:pmid/&rft_els_id=S0376738814000040&rfr_iscdi=true |