D.C. electrical conductivity of polyaniline/graphene nanocomposites produced by in situ polymerization

2021 ◽  
Author(s):  
Najlaa Jerjack Abdullah ◽  
Salma Mhammed Hasan ◽  
Abbas Fadhel Essa
Keyword(s):  
Electrical Conductivity ◽  
In Situ Polymerization ◽  
Graphene Nanocomposites

scholarly journals Facile preparation of polyimide/graphene nanocomposites via an in situ polymerization approach

RSC Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 3003-3011 ◽  
Author(s):  
Songlv Qin ◽  
Cheng Chen ◽  
Mingjun Cui ◽  
Afang Zhang ◽  
Haichao Zhao ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Aromatic Diamine ◽  
Graphene Nanocomposites ◽  
Good Dispersion ◽  
Facile Preparation ◽  
Polyimide Matrix

In this study, to achieve a compatible and good dispersion of graphene in polyimide matrix, we synthesized an aromatic diamine, aniline trimer, as a polymerizable graphene dispersant.

Preparation of Polyaniline @ Polypyrrole Conductive Composite via In Situ Polymerization

2013 ◽  
Vol 562-565 ◽  
pp. 1137-1142
Author(s):  
Hui Xia Feng ◽  
Bing Wang ◽  
Lin Tan ◽  
Na Li Chen
Keyword(s):  
Electron Microscopy ◽  
Electrical Conductivity ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
In Situ Polymerization ◽  
Conductive Composite ◽  
The Core ◽  
Novel Method ◽  
Scanning Electron

We prepared the polyaniline@polypyrrole (PAn@PPy) conductive composite by a novel method. The struction like Pre-prepared PAn as the core and PPy as the shell for the composite has been prepared by in-situ polymerization. The PAn@PPy conductive composite presents an electrical conductivity of 12.5 S/cm, which is much higher than pure PAn. The synthesized polymer composites are characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Thermogravimetric analysis (TG). The results indicated that PPy successfully grafted on PAn and the heat resistance of nanocomposite is remarkably increased.

An electrically conductive hybrid polyaniline/silver-coated polyester fabric for smart applications

2019 ◽  
Vol 50 (5) ◽  
pp. 754-769 ◽  
Author(s):  
Mostafa Youssefi ◽  
Fereshteh Motamedi
Keyword(s):  
Electrical Conductivity ◽  
In Situ Polymerization ◽  
Silver Ions ◽  
Average Diameter ◽  
Polyester Fabric ◽  
Gravimetric Analysis ◽  
Water Contact ◽  
Coated Fabric ◽  
Coated Fabrics

A highly conductive polyester fabric was fabricated by the two-step successive in situ polymerization of aniline. This was followed by silver electroless plating on the surface of the fabric. Also, a silver electroless-plated fabric and a PANI-coated fabric were prepared by the in situ chemical polymerization of aniline. The electrical conductivity measurements, scanning electron microscopy, thermal gravimetric analysis, water contact angle measurements, wide angle X-ray diffraction, Fourier transform infrared spectroscopy, and air permeability tests were conducted on the coated fabrics. It was found that the surface of the hybrid PANI/silver-coated fabric was coated with granular silver particles having the average diameter of 1.3 µm. Besides, the amount of the reduced silver on the surface of the fabric was much higher than that in the silver electroless-plated fabric. The emeraldine form of PANI was oxidized to pernigraniline and the silver ions were reduced to silver metal particles. The hybrid PANI/silver-coated fabric showed the electrical conductivity of 2.63 × 103 Scm−1; so, it could be applied in many smart wearable applications.

Electrical Properties and Morphological Structures of UHMWPE/PANI Composite Fibers Doped with Hydrochloric Acid

2013 ◽  
Vol 796 ◽  
pp. 166-171 ◽  
Author(s):  
Jian Han Hong ◽  
Zhi Juan Pan ◽  
Min Li ◽  
Mu Yao
Keyword(s):  
Mechanical Property ◽  
Electrical Conductivity ◽  
Hydrochloric Acid ◽  
In Situ Polymerization ◽  
Breaking Strength ◽  
Composite Fiber ◽  
Pani Film ◽  
Composite Fibers ◽  
Pani Composite

UHMWPE/PANI composite fibers were prepared by in-situ polymerization. The effects of concentration of hydrochloric acid on the electrical conductivity and surface morphology of the composite fiber were investigated, and the chemical construction and mechanical property were also studied. The results indicated that composite fibers prepared by in-situ polymerization were electrical conductive due to the conductive PANI film which adheres to the surface of matrix fibers, and the electrical conductivity reached 10-1S/cm. The roughness increased, and the electrical conductivity of UHMWPE/PANI composite fiber increased at the first and then decreased with the increase of concentration of HCl, the highest electrical conductivity obtained with the concentration of HCl of 0.7mol/L. The FTIR curves indicated that the composite fiber was a blending system of matrix fiber and PANI, and the chemical construction of matrix fiber was unchanged. The fibers breaking strength increased a little and breaking elongation unchanged basically after the conduction treatment.

scholarly journals The DC electrical Conductivity of prepared pure polypyrrole and polypyrrole /graphene (PPY/GN) nanocomposite by in-situ polymerization

2020 ◽  
Vol 18 (44) ◽  
pp. 50-61
Author(s):  
Fatima Mikdad Ahmed
Keyword(s):  
Electrical Conductivity ◽  
Room Temperature ◽  
In Situ Polymerization ◽  
Base Material ◽  
Chemical Oxidation ◽  
Nano Particles ◽  
Nano Particle ◽  
Result Show ◽  
Stretching Vibration

Abstract  In this work, pure Polypyrrole (PPy) and Polypyrrole (PPy)/Graphene (GN) was synthesized by in-situ polymerization in different weight percentages (0.1, 0.3, 0.5, 1, 3 and 5 wt.% (g)) of GN nano particles using chemical oxidation method at room temperature. The FTIR, SEM and electrical properties were studies for the nano composites. The result show that when concentration of GN Nano particle increase, the electrical conductivity increased and the graphene sheets were merging to form a continuous area of the GN through the polypyrrole base material. The FTIR spectra shows that the characteristics absorption peaks of polypyrrole that is, 1546.80, 1463.87 and 3400.27 cm-1(stretching vibration in the pyrrole ring), and at 1080.06 cm-1 was assigned to C—O stretching and at 1589.23 cm-1 was assigned to C—C vibration of carbon ring in graphene. الخلاصة حضر البولي بايرول النقي و المطعم بدرجة حرارة الغرفه بطريقة الاكسدة الكيميائية و قد تم استخدام جسيمات الكرافين النانوية و بالنسب التالية (0.1, 0.3, 0.5, 1. 3, ,5 %). و تم استخدام طيف الاشعه تحت الحمراء و ماسح الالكترون المجهري لتشخيص البولي بايرول المحضر كما قيست التوصيلية الكهربائية المستمرة و اوجدت النتائج ان التوصيلية تزداد بزيادة درجه الحرارة و كذالك بزيادة الكرافين .

scholarly journals Evidence of the Intercalative Redox Polymerization of Ehylenedioxythiophene intoV2O5; Achievement of Highly Conducting Poly(3,4-Ethylenedioxythiophene)/V2O5Nanohybrids

2004 ◽  
Vol 27 (4) ◽  
pp. 229-236 ◽  
Author(s):  
A. V. Murugan ◽  
C. W. Kwon ◽  
S. J. Hwang ◽  
M. H. Delville ◽  
J. Portier ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
In Situ Polymerization ◽  
High Electrical Conductivity ◽  
Redox Polymerization ◽  
Novel Method

We have established a novel method of inserting poly(3,4-ethylenedioxythiophene) (PEDOT) between the layers ofV2O5using a soft process of intercalation. The reaction takes place with the in situ polymerization of EDOT within the framework of crystallineV2O5with different nominal EDOT/V2O5ratios. The hybrids PEDOT/V2O5exhibit a high electrical conductivity

scholarly journals Bio-Based Furan-Polyesters/Graphene Nanocomposites Prepared by In Situ Polymerization

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1377
Author(s):  
Laura Sisti ◽  
Grazia Totaro ◽  
Annamaria Celli ◽  
Loris Giorgini ◽  
Simone Ligi ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Polymer Chains ◽  
Graphene Nanocomposites ◽  
Water Suspensions ◽  
Heat Distortion Temperature ◽  
Almost All ◽  
Poly Propylene ◽  
Ordered State ◽  
Intercalative Polymerization

In situ intercalative polymerization has been investigated as a strategic way to obtain poly(propylene 2,5-furandicarboxylate) (PPF) and poly(hexamethylene 2,5-furandicarboxylate) (PHF) nanocomposites with different graphene types and amounts. Graphene (G) has been dispersed in surfactant stabilized water suspensions. The loading range in composites was 0.25–0.75 wt %. For the highest composition, a different type of graphene (XT500) dispersed in 1,3 propanediol, containing a 6% of oxidized graphene and without surfactant has been also tested. The results showed that the amorphous PPF is able to crystallize during heating scan in DSC and graphene seems to affect such capability: G hinders the polymer chains in reaching an ordered state, showing even more depressed cold crystallization and melting. On the contrary, such hindering effect is absent with XT500, which rather induces the opposite. Concerning the thermal stability, no improvement has been induced by graphene, even if the onset degradation temperatures remain high for all the materials. A moderate enhancement in mechanical properties is observed in PPF composite with XT500, and especially in PHF composite, where a significative increase of 10–20% in storage modulus E’ is maintained in almost all the temperature range. Such an increase is also reflected in a slightly higher heat distortion temperature. These preliminary results can be useful in order to further address the field of application of furan-based polyesters; in particular, they could be promising as packaging materials.

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