Thermal characterization of HCN polymers by TG–MS, TG, DTA and DSC methods
This paper presents a thermogravimetry (TG) study of hydrogen cyanide polymers, synthesized from the reaction of equimolar aqueous solutions of sodium cyanide and ammonium chloride. Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) were also used to evaluate the thermal...
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| Veröffentlicht in: | Polymer degradation and stability 2011-05, Vol.96 (5), p.943-948 |
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| creator | de la Fuente, José L. Ruiz-Bermejo, Marta Menor-Salván, César Osuna-Esteban, Susana |
| description | This paper presents a thermogravimetry (TG) study of hydrogen cyanide polymers, synthesized from the reaction of equimolar aqueous solutions of sodium cyanide and ammonium chloride. Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) were also used to evaluate the thermal behaviour of these black polymers, which play an important role in prebiotic chemistry. A coupled TG–mass spectrometer (MS) system allowed us to analyze the principal volatile thermal decomposition and fragmentation products of the isolated HCN polymers under dynamic conditions and an inert atmosphere. After dehydration, a multi-step decomposition occurred in this particular polymeric system, due to the release of ammonia, hydrogen cyanide (depolymerization reaction), isocyanic acid (or cyanic acid) and formamide; these two latter species allow us identify bond connectivities. Finally, data collected from TG experiments in an oxidative atmosphere showed significant differences at higher temperatures, above 400 °C. According to these results, the different techniques of thermal analysis here applied have demonstrated to be an adequate methodology for the study and characterization of this complex macromolecular system, whose structure remains controversial even today. |
| doi_str_mv | 10.1016/j.polymdegradstab.2011.01.033 |
| format | Article |
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Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) were also used to evaluate the thermal behaviour of these black polymers, which play an important role in prebiotic chemistry. A coupled TG–mass spectrometer (MS) system allowed us to analyze the principal volatile thermal decomposition and fragmentation products of the isolated HCN polymers under dynamic conditions and an inert atmosphere. After dehydration, a multi-step decomposition occurred in this particular polymeric system, due to the release of ammonia, hydrogen cyanide (depolymerization reaction), isocyanic acid (or cyanic acid) and formamide; these two latter species allow us identify bond connectivities. Finally, data collected from TG experiments in an oxidative atmosphere showed significant differences at higher temperatures, above 400 °C. According to these results, the different techniques of thermal analysis here applied have demonstrated to be an adequate methodology for the study and characterization of this complex macromolecular system, whose structure remains controversial even today.</description><identifier>ISSN: 0141-3910</identifier><identifier>EISSN: 1873-2321</identifier><identifier>DOI: 10.1016/j.polymdegradstab.2011.01.033</identifier><identifier>CODEN: PDSTDW</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>ammonia ; ammonium chloride ; Applied sciences ; aqueous solutions ; Coupled TG–MS ; depolymerization ; Differential scanning calorimetry ; Differential thermal analysis ; DSC ; DTG ; Dynamical systems ; Dynamics ; Exact sciences and technology ; HCN polymers ; Hydrogen cyanide ; Organic polymers ; Physicochemistry of polymers ; Polymers ; prebiotics ; Properties and characterization ; sodium ; Sodium cyanide ; Spectrometers ; temperature ; thermal analysis ; Thermal and thermodynamic properties ; Thermal decomposition ; thermal degradation ; thermal properties ; thermogravimetry</subject><ispartof>Polymer degradation and stability, 2011-05, Vol.96 (5), p.943-948</ispartof><rights>2011 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c456t-b7ec98332c2f51baac0f5ccfb0ac77b2775b6dc83861ac8f5e284327de22e3793</citedby><cites>FETCH-LOGICAL-c456t-b7ec98332c2f51baac0f5ccfb0ac77b2775b6dc83861ac8f5e284327de22e3793</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.polymdegradstab.2011.01.033$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24084697$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>de la Fuente, José L.</creatorcontrib><creatorcontrib>Ruiz-Bermejo, Marta</creatorcontrib><creatorcontrib>Menor-Salván, César</creatorcontrib><creatorcontrib>Osuna-Esteban, Susana</creatorcontrib><title>Thermal characterization of HCN polymers by TG–MS, TG, DTA and DSC methods</title><title>Polymer degradation and stability</title><description>This paper presents a thermogravimetry (TG) study of hydrogen cyanide polymers, synthesized from the reaction of equimolar aqueous solutions of sodium cyanide and ammonium chloride. Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) were also used to evaluate the thermal behaviour of these black polymers, which play an important role in prebiotic chemistry. A coupled TG–mass spectrometer (MS) system allowed us to analyze the principal volatile thermal decomposition and fragmentation products of the isolated HCN polymers under dynamic conditions and an inert atmosphere. After dehydration, a multi-step decomposition occurred in this particular polymeric system, due to the release of ammonia, hydrogen cyanide (depolymerization reaction), isocyanic acid (or cyanic acid) and formamide; these two latter species allow us identify bond connectivities. Finally, data collected from TG experiments in an oxidative atmosphere showed significant differences at higher temperatures, above 400 °C. According to these results, the different techniques of thermal analysis here applied have demonstrated to be an adequate methodology for the study and characterization of this complex macromolecular system, whose structure remains controversial even today.</description><subject>ammonia</subject><subject>ammonium chloride</subject><subject>Applied sciences</subject><subject>aqueous solutions</subject><subject>Coupled TG–MS</subject><subject>depolymerization</subject><subject>Differential scanning calorimetry</subject><subject>Differential thermal analysis</subject><subject>DSC</subject><subject>DTG</subject><subject>Dynamical systems</subject><subject>Dynamics</subject><subject>Exact sciences and technology</subject><subject>HCN polymers</subject><subject>Hydrogen cyanide</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Polymers</subject><subject>prebiotics</subject><subject>Properties and characterization</subject><subject>sodium</subject><subject>Sodium cyanide</subject><subject>Spectrometers</subject><subject>temperature</subject><subject>thermal analysis</subject><subject>Thermal and thermodynamic properties</subject><subject>Thermal decomposition</subject><subject>thermal degradation</subject><subject>thermal properties</subject><subject>thermogravimetry</subject><issn>0141-3910</issn><issn>1873-2321</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqNkM9uEzEQhy0EEiHwDPhScekG_1mvnQOHKoUUKcAh6dma9Y4bR7vrYG-Rwol34A15ElxSceCENZLn8Pk344-QC84WnPHm7WFxjP1p6PAuQZcnaBeCcb5gpaR8QmbcaFkJKfhTMmO85pVccvacvMj5wMqpFZ-RzW6PaYCeuj0kcBOm8B2mEEcaPb1ZfaZ_RmDKtD3R3frXj5-ftpeluaTXuysKY0evtys64LSPXX5JnnnoM756vOfk9sP73eqm2nxZf1xdbSpXq2aqWo1uaaQUTnjFWwDHvHLOtwyc1q3QWrVN54w0DQdnvEJhail0h0Kg1Es5J2_OuccUv95jnuwQssO-hxHjfbZGK1bXWqlCvjuTLsWcE3p7TGGAdLKc2QeJ9mD_kWgfJFpWSsry_uJxEmQHvU8wupD_hoiambpZ6sK9PnMeooW7VJjbbQlqimctTPntnKzPBBYx3wImm13A0WEXErrJdjH8506_AcC4mfA</recordid><startdate>20110501</startdate><enddate>20110501</enddate><creator>de la Fuente, José L.</creator><creator>Ruiz-Bermejo, Marta</creator><creator>Menor-Salván, César</creator><creator>Osuna-Esteban, Susana</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20110501</creationdate><title>Thermal characterization of HCN polymers by TG–MS, TG, DTA and DSC methods</title><author>de la Fuente, José L. ; Ruiz-Bermejo, Marta ; Menor-Salván, César ; Osuna-Esteban, Susana</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c456t-b7ec98332c2f51baac0f5ccfb0ac77b2775b6dc83861ac8f5e284327de22e3793</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>ammonia</topic><topic>ammonium chloride</topic><topic>Applied sciences</topic><topic>aqueous solutions</topic><topic>Coupled TG–MS</topic><topic>depolymerization</topic><topic>Differential scanning calorimetry</topic><topic>Differential thermal analysis</topic><topic>DSC</topic><topic>DTG</topic><topic>Dynamical systems</topic><topic>Dynamics</topic><topic>Exact sciences and technology</topic><topic>HCN polymers</topic><topic>Hydrogen cyanide</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Polymers</topic><topic>prebiotics</topic><topic>Properties and characterization</topic><topic>sodium</topic><topic>Sodium cyanide</topic><topic>Spectrometers</topic><topic>temperature</topic><topic>thermal analysis</topic><topic>Thermal and thermodynamic properties</topic><topic>Thermal decomposition</topic><topic>thermal degradation</topic><topic>thermal properties</topic><topic>thermogravimetry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>de la Fuente, José L.</creatorcontrib><creatorcontrib>Ruiz-Bermejo, Marta</creatorcontrib><creatorcontrib>Menor-Salván, César</creatorcontrib><creatorcontrib>Osuna-Esteban, Susana</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer degradation and stability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>de la Fuente, José L.</au><au>Ruiz-Bermejo, Marta</au><au>Menor-Salván, César</au><au>Osuna-Esteban, Susana</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermal characterization of HCN polymers by TG–MS, TG, DTA and DSC methods</atitle><jtitle>Polymer degradation and stability</jtitle><date>2011-05-01</date><risdate>2011</risdate><volume>96</volume><issue>5</issue><spage>943</spage><epage>948</epage><pages>943-948</pages><issn>0141-3910</issn><eissn>1873-2321</eissn><coden>PDSTDW</coden><abstract>This paper presents a thermogravimetry (TG) study of hydrogen cyanide polymers, synthesized from the reaction of equimolar aqueous solutions of sodium cyanide and ammonium chloride. Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) were also used to evaluate the thermal behaviour of these black polymers, which play an important role in prebiotic chemistry. A coupled TG–mass spectrometer (MS) system allowed us to analyze the principal volatile thermal decomposition and fragmentation products of the isolated HCN polymers under dynamic conditions and an inert atmosphere. After dehydration, a multi-step decomposition occurred in this particular polymeric system, due to the release of ammonia, hydrogen cyanide (depolymerization reaction), isocyanic acid (or cyanic acid) and formamide; these two latter species allow us identify bond connectivities. Finally, data collected from TG experiments in an oxidative atmosphere showed significant differences at higher temperatures, above 400 °C. According to these results, the different techniques of thermal analysis here applied have demonstrated to be an adequate methodology for the study and characterization of this complex macromolecular system, whose structure remains controversial even today.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.polymdegradstab.2011.01.033</doi><tpages>6</tpages></addata></record> |
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| subjects | ammonia ammonium chloride Applied sciences aqueous solutions Coupled TG–MS depolymerization Differential scanning calorimetry Differential thermal analysis DSC DTG Dynamical systems Dynamics Exact sciences and technology HCN polymers Hydrogen cyanide Organic polymers Physicochemistry of polymers Polymers prebiotics Properties and characterization sodium Sodium cyanide Spectrometers temperature thermal analysis Thermal and thermodynamic properties Thermal decomposition thermal degradation thermal properties thermogravimetry |
| title | Thermal characterization of HCN polymers by TG–MS, TG, DTA and DSC methods |
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