An effective EMI shielding material based on poly(trimethylene terephthalate) blend nanocomposites with multiwalled carbon nanotubes

被引：20

作者：

Ajitha, A. R. ^{[1
]}

Arif, Mohammed P. ^{[1
]}

Aswathi, M. K. ^{[1
]}

Mathew, Lovely P. ^{[1
,2
]}

Geethamma, V. G. ^{[1
]}

Kalarikkal, Nandakumar ^{[1
,3
]}

Thomas, Sabu ^{[1
,4
,5
]}

Volova, Tatiana ^{[5
]}

机构：

[1] Mahatma Gandhi Univ, Int & Inter Univ Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India

[2] Viswajyothi Coll Engn & Technol, Muvattupuzha 686670, Kerala, India

[3] Mahatma Gandhi Univ, Sch Pure & Appl Phys, Kottayam 686560, Kerala, India

[4] Mahatma Gandhi Univ, Sch Chem Sci, Kottayam 686560, Kerala, India

[5] Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia

来源：

NEW JOURNAL OF CHEMISTRY | 2018年 / 42卷 / 16期

关键词：

ELECTRICAL-CONDUCTIVITY; POLYMER BLENDS; DIELECTRIC-PROPERTIES; MECHANICAL-PROPERTIES; DC CONDUCTIVITY; COMPOSITES; PERFORMANCE; MORPHOLOGY; LOCALIZATION; SUPERCAPACITOR;

D O I：

10.1039/c8nj02410c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effects of blend ratio and MWCNT loading on the morphology, electrical properties and electromagnetic shielding performance of poly(trimethylene terephthalate) (PTT)/polypropylene (PP) blend nanocomposites were studied. To understate the state of dispersion of the MWCNTs, PTT/PP blend nanocomposites were systematically analyzed using scanning electron microscopy and high resolution transmission electron microscopy. Fourier transform spectroscopy (FT-IR) and Raman spectroscopy techniques were used to understand the chemical interactions between the blend components and fillers. Among the nanocomposites of all blend composition with 1 wt% MWCNTs, composites with high wt% PTT (90PTT/10PP/1MWCNT) showed better electrical properties due to the double percolation phenomenon. The shielding effectiveness (SE) was investigated in the S-band frequency range and 90PTT/10PP/1MWCNT showed a very good shielding effectiveness for electromagnetic radiation. Further studies with different MWCNT loadings showed that the 90PTT/10PP blend with 5 wt% MWCNTs indicated high dielectric properties and a maximum SE of approximate to 40 dB. The conductivity results were linearly fitted by a power law and the obtained percolation threshold was found to be around 0.5 wt% MWCNTs. Theoretical models were also applied for the DC conductivity data to explain the conductive mechanism in the polymer blend nanocomposites.

引用

页码：13915 / 13926

页数：12

共 54 条

[1] Developing highly conducting and mechanically durable styrene butadiene rubber composites with tailored microstructural properties by a green approach using ionic liquid modified MWCNTs [J].