Influence of Surface Modified MWCNTs on the Mechanical, Electrical and Thermal Properties of Polyimide Nanocomposites
Polyamic acid, the precursor of polyimide, was used for the preparation of polyimide/multiwalled carbon nanotubes (MWCNTs) nanocomposite films by solvent casting technique. In order to enhance the chemical compatibility between polyimide matrix and MWCNTs, the latter was surface modified by incorpor...
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| Veröffentlicht in: | Nanoscale research letters 2008-11, Vol.3 (11), p.444-453, Article 444 |
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| creator | Singh, BP Singh, Deepankar Mathur, RB Dhami, TL |
| description | Polyamic acid, the precursor of polyimide, was used for the preparation of polyimide/multiwalled carbon nanotubes (MWCNTs) nanocomposite films by solvent casting technique. In order to enhance the chemical compatibility between polyimide matrix and MWCNTs, the latter was surface modified by incorporating acidic and amide groups by chemical treatment with nitric acid and octadecylamine (C
18
H
39
N), respectively. While the amide-MWCNT/polyimide composite shows higher mechanical properties at low loadings ( |
| doi_str_mv | 10.1007/s11671-008-9179-4 |
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| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_3244951</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2787074312</sourcerecordid><originalsourceid>FETCH-LOGICAL-c414t-7a0eb37e55b7e883cf423caddc69482457852bbefa2f12f048f133b0f4a46b403</originalsourceid><addsrcrecordid>eNp1kV1LwzAYhYsoOKc_wLuAt1aTNG26G0GGXzDnwInehTR9s2W0yUxawX9vxoYfF17lkPecJ-E9SXJK8AXBmF8GQgpOUozLdET4KGV7yYDkeZFSXrzt_9KHyVEIK4wZx7wYJP2D1U0PVgFyGj33XssoH11ttIEaPb6Op_OAnEXdMl6DWkprlGzO0U0DqvMbjaSt0XwJvo165t0afGcgbHgz13ya1tSAptI65dq1C6aDcJwcaNkEONmdw-Tl9mY-vk8nT3cP4-tJqhhhXcolhirjkOcVh7LMlGY0U7KuVTFiJWU5L3NaVaAl1YRqzEpNsqzCmklWVAxnw-Rqy133VQu1Att52Yi1N630n8JJI_5OrFmKhfsQGWVslJMIONsBvHvvIXRi5Xpv458F5WVcIcsIjS6ydSnvQvCgv18gWGzqEdt6RKxHbOoRLGboNhOi1y7A_5D_D30B3NCVHQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2787074312</pqid></control><display><type>article</type><title>Influence of Surface Modified MWCNTs on the Mechanical, Electrical and Thermal Properties of Polyimide Nanocomposites</title><source>DOAJ Directory of Open Access Journals</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>PubMed Central Open Access</source><source>PubMed Central</source><source>Free Full-Text Journals in Chemistry</source><creator>Singh, BP ; Singh, Deepankar ; Mathur, RB ; Dhami, TL</creator><creatorcontrib>Singh, BP ; Singh, Deepankar ; Mathur, RB ; Dhami, TL</creatorcontrib><description>Polyamic acid, the precursor of polyimide, was used for the preparation of polyimide/multiwalled carbon nanotubes (MWCNTs) nanocomposite films by solvent casting technique. In order to enhance the chemical compatibility between polyimide matrix and MWCNTs, the latter was surface modified by incorporating acidic and amide groups by chemical treatment with nitric acid and octadecylamine (C
18
H
39
N), respectively. While the amide-MWCNT/polyimide composite shows higher mechanical properties at low loadings (<3 wt%), the acid-MWCNT/polyimide composites perform better at higher loadings (5 wt%). The tensile strength (TS) and the Young’s modulus (YM) values of the acid-MWCNT/polyimide composites at 5 wt% MWCNT loadings was 151 and 3360 MPa, respectively, an improvement of 54% in TS and 35% in YM over the neat polyimide film (TS = 98 MPa; YM = 2492 MPa). These MWCNT-reinforced composites show remarkable improvement in terms of thermal stability as compared to that for pure polyimide film. The electrical conductivity of 5 wt% acid modified MWCNTs/polyimide nanocomposites improved to 0.94 S cm
−
1
(6.67 × 10
−
18
S cm
−1
for pure polyimide) the maximum achieved so far for MWCNT-polyimide composites.</description><identifier>ISSN: 1556-276X</identifier><identifier>ISSN: 1931-7573</identifier><identifier>EISSN: 1556-276X</identifier><identifier>DOI: 10.1007/s11671-008-9179-4</identifier><language>eng</language><publisher>New York: Springer New York</publisher><subject>Acids ; Chemical compatibility ; Chemical treatment ; Chemistry and Materials Science ; Electrical conductivity ; Electrical resistivity ; Materials Science ; Mechanical properties ; Modulus of elasticity ; Molecular Medicine ; Multi wall carbon nanotubes ; Nano Express ; Nanochemistry ; Nanocomposites ; Nanoscale Science and Technology ; Nanotechnology ; Nanotechnology and Microengineering ; Nanotubes ; Nitric acid ; Tensile strength ; Thermal properties ; Thermal stability ; Thermodynamic properties</subject><ispartof>Nanoscale research letters, 2008-11, Vol.3 (11), p.444-453, Article 444</ispartof><rights>to the authors 2008</rights><rights>to the authors 2008. This work is published under http://creativecommons.org/licenses/by/2/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Copyright ©2008 to the authors 2008 to the authors</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c414t-7a0eb37e55b7e883cf423caddc69482457852bbefa2f12f048f133b0f4a46b403</citedby><cites>FETCH-LOGICAL-c414t-7a0eb37e55b7e883cf423caddc69482457852bbefa2f12f048f133b0f4a46b403</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3244951/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3244951/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,725,778,782,862,883,27911,27912,53778,53780</link.rule.ids></links><search><creatorcontrib>Singh, BP</creatorcontrib><creatorcontrib>Singh, Deepankar</creatorcontrib><creatorcontrib>Mathur, RB</creatorcontrib><creatorcontrib>Dhami, TL</creatorcontrib><title>Influence of Surface Modified MWCNTs on the Mechanical, Electrical and Thermal Properties of Polyimide Nanocomposites</title><title>Nanoscale research letters</title><addtitle>Nanoscale Res Lett</addtitle><description>Polyamic acid, the precursor of polyimide, was used for the preparation of polyimide/multiwalled carbon nanotubes (MWCNTs) nanocomposite films by solvent casting technique. In order to enhance the chemical compatibility between polyimide matrix and MWCNTs, the latter was surface modified by incorporating acidic and amide groups by chemical treatment with nitric acid and octadecylamine (C
18
H
39
N), respectively. While the amide-MWCNT/polyimide composite shows higher mechanical properties at low loadings (<3 wt%), the acid-MWCNT/polyimide composites perform better at higher loadings (5 wt%). The tensile strength (TS) and the Young’s modulus (YM) values of the acid-MWCNT/polyimide composites at 5 wt% MWCNT loadings was 151 and 3360 MPa, respectively, an improvement of 54% in TS and 35% in YM over the neat polyimide film (TS = 98 MPa; YM = 2492 MPa). These MWCNT-reinforced composites show remarkable improvement in terms of thermal stability as compared to that for pure polyimide film. The electrical conductivity of 5 wt% acid modified MWCNTs/polyimide nanocomposites improved to 0.94 S cm
−
1
(6.67 × 10
−
18
S cm
−1
for pure polyimide) the maximum achieved so far for MWCNT-polyimide composites.</description><subject>Acids</subject><subject>Chemical compatibility</subject><subject>Chemical treatment</subject><subject>Chemistry and Materials Science</subject><subject>Electrical conductivity</subject><subject>Electrical resistivity</subject><subject>Materials Science</subject><subject>Mechanical properties</subject><subject>Modulus of elasticity</subject><subject>Molecular Medicine</subject><subject>Multi wall carbon nanotubes</subject><subject>Nano Express</subject><subject>Nanochemistry</subject><subject>Nanocomposites</subject><subject>Nanoscale Science and Technology</subject><subject>Nanotechnology</subject><subject>Nanotechnology and Microengineering</subject><subject>Nanotubes</subject><subject>Nitric acid</subject><subject>Tensile strength</subject><subject>Thermal properties</subject><subject>Thermal stability</subject><subject>Thermodynamic 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Lett</stitle><date>2008-11-01</date><risdate>2008</risdate><volume>3</volume><issue>11</issue><spage>444</spage><epage>453</epage><pages>444-453</pages><artnum>444</artnum><issn>1556-276X</issn><issn>1931-7573</issn><eissn>1556-276X</eissn><abstract>Polyamic acid, the precursor of polyimide, was used for the preparation of polyimide/multiwalled carbon nanotubes (MWCNTs) nanocomposite films by solvent casting technique. In order to enhance the chemical compatibility between polyimide matrix and MWCNTs, the latter was surface modified by incorporating acidic and amide groups by chemical treatment with nitric acid and octadecylamine (C
18
H
39
N), respectively. While the amide-MWCNT/polyimide composite shows higher mechanical properties at low loadings (<3 wt%), the acid-MWCNT/polyimide composites perform better at higher loadings (5 wt%). The tensile strength (TS) and the Young’s modulus (YM) values of the acid-MWCNT/polyimide composites at 5 wt% MWCNT loadings was 151 and 3360 MPa, respectively, an improvement of 54% in TS and 35% in YM over the neat polyimide film (TS = 98 MPa; YM = 2492 MPa). These MWCNT-reinforced composites show remarkable improvement in terms of thermal stability as compared to that for pure polyimide film. The electrical conductivity of 5 wt% acid modified MWCNTs/polyimide nanocomposites improved to 0.94 S cm
−
1
(6.67 × 10
−
18
S cm
−1
for pure polyimide) the maximum achieved so far for MWCNT-polyimide composites.</abstract><cop>New York</cop><pub>Springer New York</pub><doi>10.1007/s11671-008-9179-4</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Acids Chemical compatibility Chemical treatment Chemistry and Materials Science Electrical conductivity Electrical resistivity Materials Science Mechanical properties Modulus of elasticity Molecular Medicine Multi wall carbon nanotubes Nano Express Nanochemistry Nanocomposites Nanoscale Science and Technology Nanotechnology Nanotechnology and Microengineering Nanotubes Nitric acid Tensile strength Thermal properties Thermal stability Thermodynamic properties |
| title | Influence of Surface Modified MWCNTs on the Mechanical, Electrical and Thermal Properties of Polyimide Nanocomposites |
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