Electromagnetic interference shielding effectiveness of MWCNT filled poly(ether sulfone) and poly(ether imide) nanocomposites
Multiwalled carbon nanotube (MWCNT) filled poly(ether sulfone) (PES) and poly(ether imide) (PEI) composites were prepared with different MWCNT weight fractions (0.5–5wt%) by a solution mixing technique. Their electrical conductivities, electromagnetic interference (EMI), shielding effectiveness (SE)...
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| Veröffentlicht in: | Polymer engineering and science 2014-11, Vol.54 (11), p.2560-2570 |
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| container_title | Polymer engineering and science |
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| creator | Mohanty, Aruna Kumar Ghosh, Anindita Sawai, Pravin Pareek, Kapil Banerjee, Susanta Das, Amit Pötschke, Petra Heinrich, Gert Voit, Brigitte |
| description | Multiwalled carbon nanotube (MWCNT) filled poly(ether sulfone) (PES) and poly(ether imide) (PEI) composites were prepared with different MWCNT weight fractions (0.5–5wt%) by a solution mixing technique. Their electrical conductivities, electromagnetic interference (EMI), shielding effectiveness (SE), return loss (RL), and absorption loss (AL) were investigated. Morphologies of the fracture surfaces of nanocomposites studied by scanning electron and transmission electron microscopy showed relatively good MWCNT dispersion and distribution. The electrical conductivity of compression molded samples measured at room temperature indicated that the electrical percolation network was achieved already at 0.5% loading. The measurements of shielding effectiveness (SE) carried out in the frequency range of 8 to 12 GHz (X‐band range) showed that SE increases with measurement frequency and with filler loading, whereby no significant differences could be observed between PES and PEI as matrices. The nanocomposites based on both matrices with 5 wt% loading of MWCNT exhibited shielding levels at 8 GHz between 42 and 45 dB in comparison with the pure polymers which showed value in the range of 1 to 2 dB. RL and AL showed significantly lower values for the composites as compared to unfilled polymers, but no systematic trends were observed on frequency. POLYM. ENG. SCI., 54:2560–2570, 2014. © 2013 Society of Plastics Engineers |
| doi_str_mv | 10.1002/pen.23804 |
| format | Article |
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Their electrical conductivities, electromagnetic interference (EMI), shielding effectiveness (SE), return loss (RL), and absorption loss (AL) were investigated. Morphologies of the fracture surfaces of nanocomposites studied by scanning electron and transmission electron microscopy showed relatively good MWCNT dispersion and distribution. The electrical conductivity of compression molded samples measured at room temperature indicated that the electrical percolation network was achieved already at 0.5% loading. The measurements of shielding effectiveness (SE) carried out in the frequency range of 8 to 12 GHz (X‐band range) showed that SE increases with measurement frequency and with filler loading, whereby no significant differences could be observed between PES and PEI as matrices. The nanocomposites based on both matrices with 5 wt% loading of MWCNT exhibited shielding levels at 8 GHz between 42 and 45 dB in comparison with the pure polymers which showed value in the range of 1 to 2 dB. RL and AL showed significantly lower values for the composites as compared to unfilled polymers, but no systematic trends were observed on frequency. POLYM. ENG. SCI., 54:2560–2570, 2014. © 2013 Society of Plastics Engineers</description><identifier>ISSN: 0032-3888</identifier><identifier>EISSN: 1548-2634</identifier><identifier>DOI: 10.1002/pen.23804</identifier><identifier>CODEN: PYESAZ</identifier><language>eng</language><publisher>Hoboken, NJ: Blackwell Publishing Ltd</publisher><subject>Applied sciences ; Carbon ; Composites ; Computer industry ; Conductivity ; Electric properties ; Electrical conductivity ; Electrical resistivity ; Electromagnetic interference ; Electromagnetism ; Exact sciences and technology ; Forms of application and semi-finished materials ; Nanocomposites ; Nanotubes ; Noise levels ; Polyetherimides ; Polymer industry, paints, wood ; Polymers ; Resistivity ; Scanning electron microscopy ; Shielding ; Technology of polymers ; Transmission electron microscopy</subject><ispartof>Polymer engineering and science, 2014-11, Vol.54 (11), p.2560-2570</ispartof><rights>2013 Society of Plastics Engineers</rights><rights>2015 INIST-CNRS</rights><rights>COPYRIGHT 2014 Society of Plastics Engineers, Inc.</rights><rights>Copyright Blackwell Publishing Ltd. 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Their electrical conductivities, electromagnetic interference (EMI), shielding effectiveness (SE), return loss (RL), and absorption loss (AL) were investigated. Morphologies of the fracture surfaces of nanocomposites studied by scanning electron and transmission electron microscopy showed relatively good MWCNT dispersion and distribution. The electrical conductivity of compression molded samples measured at room temperature indicated that the electrical percolation network was achieved already at 0.5% loading. The measurements of shielding effectiveness (SE) carried out in the frequency range of 8 to 12 GHz (X‐band range) showed that SE increases with measurement frequency and with filler loading, whereby no significant differences could be observed between PES and PEI as matrices. The nanocomposites based on both matrices with 5 wt% loading of MWCNT exhibited shielding levels at 8 GHz between 42 and 45 dB in comparison with the pure polymers which showed value in the range of 1 to 2 dB. RL and AL showed significantly lower values for the composites as compared to unfilled polymers, but no systematic trends were observed on frequency. POLYM. ENG. SCI., 54:2560–2570, 2014. © 2013 Society of Plastics Engineers</description><subject>Applied sciences</subject><subject>Carbon</subject><subject>Composites</subject><subject>Computer industry</subject><subject>Conductivity</subject><subject>Electric properties</subject><subject>Electrical conductivity</subject><subject>Electrical resistivity</subject><subject>Electromagnetic interference</subject><subject>Electromagnetism</subject><subject>Exact sciences and technology</subject><subject>Forms of application and semi-finished materials</subject><subject>Nanocomposites</subject><subject>Nanotubes</subject><subject>Noise levels</subject><subject>Polyetherimides</subject><subject>Polymer industry, paints, wood</subject><subject>Polymers</subject><subject>Resistivity</subject><subject>Scanning electron microscopy</subject><subject>Shielding</subject><subject>Technology of polymers</subject><subject>Transmission electron microscopy</subject><issn>0032-3888</issn><issn>1548-2634</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>N95</sourceid><recordid>eNp1kd1rE0EUxRdRMFYf_A8WRGjBbedjPx9LiKlYo2BswZdhMnMnmTqZ2c7d1ebB_92JqQUFny5cfufcwz1Z9pKSU0oIO-vBnzLekvJRNqFV2Ras5uXjbEIIZwVv2_Zp9gzxhiSWV90k-zlzoIYYtnLtYbAqt36AaCCCV5DjxoLT1q9zMCZx9jt4QMyDyT9cTxfL3FjnQOd9cLtjGDYQcxydCR5Ocun_2tut1WnrpQ8qbPuAdgB8nj0x0iG8uJ9H2Ze3s-X0orj8OH83Pb8sVFm3ZVFyXTGy0sQo3RJFTEMJ7XinFaOcGV1pUmnaMNPBChhRvGYr3WlQdccZVJofZccH3z6G2xFwEFuLCpyTHsKIgtYlY3VZVV1CX_2D3oQx-pQuUelGy2nXJOrNgVpLB2I1ot3_xXq0682AazkiivP07qouG04TfnLAVQyIEYzoo93KuBOUiH1vIvUmfveW2Nf3ASQq6UyUXll8ELC22-fcBz07cD-sg93_DcWn2eKPc3FQWBzg7kEh4zdRN7ypxPViLr5-vmLv5_RKLPkv0JS3GQ</recordid><startdate>201411</startdate><enddate>201411</enddate><creator>Mohanty, Aruna Kumar</creator><creator>Ghosh, Anindita</creator><creator>Sawai, Pravin</creator><creator>Pareek, Kapil</creator><creator>Banerjee, Susanta</creator><creator>Das, Amit</creator><creator>Pötschke, Petra</creator><creator>Heinrich, Gert</creator><creator>Voit, Brigitte</creator><general>Blackwell Publishing Ltd</general><general>Wiley</general><general>Society of Plastics Engineers, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>N95</scope><scope>XI7</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><scope>7QF</scope><scope>7U5</scope><scope>L7M</scope></search><sort><creationdate>201411</creationdate><title>Electromagnetic interference shielding effectiveness of MWCNT filled poly(ether sulfone) and poly(ether imide) nanocomposites</title><author>Mohanty, Aruna Kumar ; 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Their electrical conductivities, electromagnetic interference (EMI), shielding effectiveness (SE), return loss (RL), and absorption loss (AL) were investigated. Morphologies of the fracture surfaces of nanocomposites studied by scanning electron and transmission electron microscopy showed relatively good MWCNT dispersion and distribution. The electrical conductivity of compression molded samples measured at room temperature indicated that the electrical percolation network was achieved already at 0.5% loading. The measurements of shielding effectiveness (SE) carried out in the frequency range of 8 to 12 GHz (X‐band range) showed that SE increases with measurement frequency and with filler loading, whereby no significant differences could be observed between PES and PEI as matrices. The nanocomposites based on both matrices with 5 wt% loading of MWCNT exhibited shielding levels at 8 GHz between 42 and 45 dB in comparison with the pure polymers which showed value in the range of 1 to 2 dB. RL and AL showed significantly lower values for the composites as compared to unfilled polymers, but no systematic trends were observed on frequency. POLYM. ENG. SCI., 54:2560–2570, 2014. © 2013 Society of Plastics Engineers</abstract><cop>Hoboken, NJ</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/pen.23804</doi><tpages>11</tpages></addata></record> |
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| ispartof | Polymer engineering and science, 2014-11, Vol.54 (11), p.2560-2570 |
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| source | Wiley Journals |
| subjects | Applied sciences Carbon Composites Computer industry Conductivity Electric properties Electrical conductivity Electrical resistivity Electromagnetic interference Electromagnetism Exact sciences and technology Forms of application and semi-finished materials Nanocomposites Nanotubes Noise levels Polyetherimides Polymer industry, paints, wood Polymers Resistivity Scanning electron microscopy Shielding Technology of polymers Transmission electron microscopy |
| title | Electromagnetic interference shielding effectiveness of MWCNT filled poly(ether sulfone) and poly(ether imide) nanocomposites |
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