Study on the effect of aminosilane functionalized nanoclay on the curing kinetics of epoxy nanocomposites
► Epoxy nanocomposite based on pristine and silane functionalized MMT were prepared. ► Non-isothermal DSC was used to study the curing kinetics of the epoxy nanocomposite. ► Peak temperature (Tp) of epoxy curing reaction decreases on loading P-MMT or S-MMT. ► Kinetic analysis of these epoxy nanocomp...
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| Veröffentlicht in: | Thermochimica acta 2012-10, Vol.546, p.16-23 |
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| creator | Shanmugharaj, A.M. Ryu, Sung Hun |
| description | ► Epoxy nanocomposite based on pristine and silane functionalized MMT were prepared. ► Non-isothermal DSC was used to study the curing kinetics of the epoxy nanocomposite. ► Peak temperature (Tp) of epoxy curing reaction decreases on loading P-MMT or S-MMT. ► Kinetic analysis of these epoxy nanocomposites revealed the autocatalytic nature.
The curing kinetics of epoxy nanocomposites prepared by incorporating pristine (P-MMT) and functionalized montmorillonite clay (S-MMT) was studied using non-isothermal differential scanning calorimetry (DSC) experiments. Loading of S-MMT in epoxy matrix resulted in the decrease of peak exotherm temperature (Tp) at all heating rates corroborating the enhanced curing reactions, when compared to neat or P-MMT filled epoxy system. The kinetic parameters of the curing processes of the neat, pristine and functionalized MMT filled epoxy were determined using isoconversional methods viz. Kissinger and Friedman methods. In comparison to P-MMT filled epoxy system, epoxy nanocomposites loaded with S-MMT showed lower activation energy (Eα) over the range of conversion (α) revealing the enhanced curing reactions in these system. Besides Eα, the overall order of reactions (m+n) does not vary significantly in comparison to neat or P-MMT loaded epoxy corroborating the fact that the curing mechanism is autocatalytic in nature. The predicted curves determined using the kinetic parameters fit well with the non-isothermal DSC thermograms revealing the proposed kinetic equation clearly explain the curing kinetics of the prepared epoxy nanocomposites. |
| doi_str_mv | 10.1016/j.tca.2012.07.026 |
| format | Article |
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The curing kinetics of epoxy nanocomposites prepared by incorporating pristine (P-MMT) and functionalized montmorillonite clay (S-MMT) was studied using non-isothermal differential scanning calorimetry (DSC) experiments. Loading of S-MMT in epoxy matrix resulted in the decrease of peak exotherm temperature (Tp) at all heating rates corroborating the enhanced curing reactions, when compared to neat or P-MMT filled epoxy system. The kinetic parameters of the curing processes of the neat, pristine and functionalized MMT filled epoxy were determined using isoconversional methods viz. Kissinger and Friedman methods. In comparison to P-MMT filled epoxy system, epoxy nanocomposites loaded with S-MMT showed lower activation energy (Eα) over the range of conversion (α) revealing the enhanced curing reactions in these system. Besides Eα, the overall order of reactions (m+n) does not vary significantly in comparison to neat or P-MMT loaded epoxy corroborating the fact that the curing mechanism is autocatalytic in nature. The predicted curves determined using the kinetic parameters fit well with the non-isothermal DSC thermograms revealing the proposed kinetic equation clearly explain the curing kinetics of the prepared epoxy nanocomposites.</description><identifier>ISSN: 0040-6031</identifier><identifier>EISSN: 1872-762X</identifier><identifier>DOI: 10.1016/j.tca.2012.07.026</identifier><identifier>CODEN: THACAS</identifier><language>eng</language><publisher>Oxford: Elsevier B.V</publisher><subject>Aminosilane ; Autocatalytic reactions ; Chemical thermodynamics ; Chemistry ; Conversion ; Curing ; Curing kinetics ; Differential scanning calorimetry ; Epoxy nanocomposites ; Exact sciences and technology ; General and physical chemistry ; General. Theory ; Heating rate ; Montmorillonite clay ; Nanocomposites ; Nanomaterials ; Nanostructure ; Non-isothermal differential scanning calorimetry ; Reaction kinetics</subject><ispartof>Thermochimica acta, 2012-10, Vol.546, p.16-23</ispartof><rights>2012 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c397t-d16a65d51438371e9af99428a86665731b0d38fd486cf387d2643b1b2fa8d9b33</citedby><cites>FETCH-LOGICAL-c397t-d16a65d51438371e9af99428a86665731b0d38fd486cf387d2643b1b2fa8d9b33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.tca.2012.07.026$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26369590$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Shanmugharaj, A.M.</creatorcontrib><creatorcontrib>Ryu, Sung Hun</creatorcontrib><title>Study on the effect of aminosilane functionalized nanoclay on the curing kinetics of epoxy nanocomposites</title><title>Thermochimica acta</title><description>► Epoxy nanocomposite based on pristine and silane functionalized MMT were prepared. ► Non-isothermal DSC was used to study the curing kinetics of the epoxy nanocomposite. ► Peak temperature (Tp) of epoxy curing reaction decreases on loading P-MMT or S-MMT. ► Kinetic analysis of these epoxy nanocomposites revealed the autocatalytic nature.
The curing kinetics of epoxy nanocomposites prepared by incorporating pristine (P-MMT) and functionalized montmorillonite clay (S-MMT) was studied using non-isothermal differential scanning calorimetry (DSC) experiments. Loading of S-MMT in epoxy matrix resulted in the decrease of peak exotherm temperature (Tp) at all heating rates corroborating the enhanced curing reactions, when compared to neat or P-MMT filled epoxy system. The kinetic parameters of the curing processes of the neat, pristine and functionalized MMT filled epoxy were determined using isoconversional methods viz. Kissinger and Friedman methods. In comparison to P-MMT filled epoxy system, epoxy nanocomposites loaded with S-MMT showed lower activation energy (Eα) over the range of conversion (α) revealing the enhanced curing reactions in these system. Besides Eα, the overall order of reactions (m+n) does not vary significantly in comparison to neat or P-MMT loaded epoxy corroborating the fact that the curing mechanism is autocatalytic in nature. The predicted curves determined using the kinetic parameters fit well with the non-isothermal DSC thermograms revealing the proposed kinetic equation clearly explain the curing kinetics of the prepared epoxy nanocomposites.</description><subject>Aminosilane</subject><subject>Autocatalytic reactions</subject><subject>Chemical thermodynamics</subject><subject>Chemistry</subject><subject>Conversion</subject><subject>Curing</subject><subject>Curing kinetics</subject><subject>Differential scanning calorimetry</subject><subject>Epoxy nanocomposites</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>General. Theory</subject><subject>Heating rate</subject><subject>Montmorillonite clay</subject><subject>Nanocomposites</subject><subject>Nanomaterials</subject><subject>Nanostructure</subject><subject>Non-isothermal differential scanning calorimetry</subject><subject>Reaction kinetics</subject><issn>0040-6031</issn><issn>1872-762X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kLFuFDEURS0UJDYhH5Bumkg0Mzzbs7ZHqVBEAClSCkCis7z2M3iZtRfbg9h8PV5tlDLVa869T_cQckVhoEDF--1QrRkYUDaAHICJV2RFlWS9FOzHGVkBjNAL4PQNOS9lC9BIBSsSvtbFHboUu_oLO_Qebe2S78wuxFTCbCJ2fom2hhTNHB7RddHEZGfzHLJLDvFn9ztErMGWYxr36d_hBKbdvvVULG_Ja2_mgpdP94J8v_v47fZzf__w6cvth_ve8knW3lFhxNqt6cgVlxQn46dpZMooIcRacroBx5V3oxLWcyUdEyPf0A3zRrlpw_kFeXfq3ef0Z8FS9S4Ui_NxSlqKpkJSwYBx0VB6Qm1OpWT0ep_DzuSDpqCPWvVWN636qFWD1E1ry1w_1ZtizeyziTaU52AjxLSeoHE3Jw7b1r8Bsy42YLToQm6OtUvhhS__AW1Rjg8</recordid><startdate>20121020</startdate><enddate>20121020</enddate><creator>Shanmugharaj, A.M.</creator><creator>Ryu, Sung Hun</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20121020</creationdate><title>Study on the effect of aminosilane functionalized nanoclay on the curing kinetics of epoxy nanocomposites</title><author>Shanmugharaj, A.M. ; Ryu, Sung Hun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c397t-d16a65d51438371e9af99428a86665731b0d38fd486cf387d2643b1b2fa8d9b33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Aminosilane</topic><topic>Autocatalytic reactions</topic><topic>Chemical thermodynamics</topic><topic>Chemistry</topic><topic>Conversion</topic><topic>Curing</topic><topic>Curing kinetics</topic><topic>Differential scanning calorimetry</topic><topic>Epoxy nanocomposites</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>General. Theory</topic><topic>Heating rate</topic><topic>Montmorillonite clay</topic><topic>Nanocomposites</topic><topic>Nanomaterials</topic><topic>Nanostructure</topic><topic>Non-isothermal differential scanning calorimetry</topic><topic>Reaction kinetics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shanmugharaj, A.M.</creatorcontrib><creatorcontrib>Ryu, Sung Hun</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Thermochimica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shanmugharaj, A.M.</au><au>Ryu, Sung Hun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study on the effect of aminosilane functionalized nanoclay on the curing kinetics of epoxy nanocomposites</atitle><jtitle>Thermochimica acta</jtitle><date>2012-10-20</date><risdate>2012</risdate><volume>546</volume><spage>16</spage><epage>23</epage><pages>16-23</pages><issn>0040-6031</issn><eissn>1872-762X</eissn><coden>THACAS</coden><abstract>► Epoxy nanocomposite based on pristine and silane functionalized MMT were prepared. ► Non-isothermal DSC was used to study the curing kinetics of the epoxy nanocomposite. ► Peak temperature (Tp) of epoxy curing reaction decreases on loading P-MMT or S-MMT. ► Kinetic analysis of these epoxy nanocomposites revealed the autocatalytic nature.
The curing kinetics of epoxy nanocomposites prepared by incorporating pristine (P-MMT) and functionalized montmorillonite clay (S-MMT) was studied using non-isothermal differential scanning calorimetry (DSC) experiments. Loading of S-MMT in epoxy matrix resulted in the decrease of peak exotherm temperature (Tp) at all heating rates corroborating the enhanced curing reactions, when compared to neat or P-MMT filled epoxy system. The kinetic parameters of the curing processes of the neat, pristine and functionalized MMT filled epoxy were determined using isoconversional methods viz. Kissinger and Friedman methods. In comparison to P-MMT filled epoxy system, epoxy nanocomposites loaded with S-MMT showed lower activation energy (Eα) over the range of conversion (α) revealing the enhanced curing reactions in these system. Besides Eα, the overall order of reactions (m+n) does not vary significantly in comparison to neat or P-MMT loaded epoxy corroborating the fact that the curing mechanism is autocatalytic in nature. The predicted curves determined using the kinetic parameters fit well with the non-isothermal DSC thermograms revealing the proposed kinetic equation clearly explain the curing kinetics of the prepared epoxy nanocomposites.</abstract><cop>Oxford</cop><pub>Elsevier B.V</pub><doi>10.1016/j.tca.2012.07.026</doi><tpages>8</tpages></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Aminosilane Autocatalytic reactions Chemical thermodynamics Chemistry Conversion Curing Curing kinetics Differential scanning calorimetry Epoxy nanocomposites Exact sciences and technology General and physical chemistry General. Theory Heating rate Montmorillonite clay Nanocomposites Nanomaterials Nanostructure Non-isothermal differential scanning calorimetry Reaction kinetics |
| title | Study on the effect of aminosilane functionalized nanoclay on the curing kinetics of epoxy nanocomposites |
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