The Electrochemical Properties of Nanocomposite Films Obtained by Chemical In Situ Polymerization of Aniline and Carbon Nanostructures

ChemPhysChem ◽  
2012 ◽  
Vol 14 (1) ◽  
pp. 116-124 ◽  
Author(s):  
Marta E. Plonska-Brzezinska ◽  
Joanna Breczko ◽  
Barbara Palys ◽  
Luis Echegoyen
Keyword(s):  
Electrochemical Properties ◽  
Carbon Nanostructures ◽  
In Situ Polymerization ◽  
Nanocomposite Films

scholarly journals In Situ Polymerization of Chiral Poly(fluorene-alt-benzothiadiazole) Nanocomposites with Enhanced Chirality

2020 ◽  
Vol 10 (23) ◽  
pp. 8740
Author(s):  
Hongsub Jee ◽  
Hyeong-Sub Oh ◽  
Jaehyeong Lee
Keyword(s):  
Optical Activity ◽  
In Situ Polymerization ◽  
Nanocomposite Films ◽  
High Quality ◽  
Chiral Metamaterials ◽  
Visible Wavelengths ◽  
Chiral Polymer

Poly(fluorene-alt-benzothiadiazole) (PFBT) is a promising chiral polymer for use in metamaterials and other photonic applications, due to its large chiral optical activity at visible wavelengths. However, its usages are very limited, since it is not readily patternable into microstructures and challenging to apply to applications. In this paper, we demonstrate photo patterning of chiral PFBT/Achiral SU-8 photoresist to produce high quality structures while retaining the extraordinary chiral optical activity of our previously-reported PFBT/SU8 nanocomposite films. The ability to produce cleanly patterned microfeatures with high chirality may enable wider use of PFBT in chiral metamaterials and other photonic applications.

Electrical properties of TiO2-filled polyimide nanocomposite films prepared via an in situ polymerization process

2010 ◽  
Vol 160 (23-24) ◽  
pp. 2670-2674 ◽  
Author(s):  
Jun-Wei Zha ◽  
Zhi-Min Dang ◽  
Tao Zhou ◽  
Hong-Tao Song ◽  
George Chen
Keyword(s):  
Electrical Properties ◽  
In Situ Polymerization ◽  
Nanocomposite Films ◽  
Polymerization Process ◽  
Polyimide Nanocomposite

scholarly journals Thermal and electrical properties of polyimide/PANI nanofiber composites prepared via in situ polymerization

2018 ◽  
Vol 36 (2) ◽  
pp. 283-287
Author(s):  
Aseel A. Kareem
Keyword(s):  
In Situ Polymerization ◽  
Composite Films ◽  
Nanocomposite Films ◽  
X Ray Diffraction ◽  
Nanofiber Composite ◽  
X Ray ◽  
Thermal And Electrical Properties ◽  
Ft Ir ◽  
Thermal Stability Of

Abstract Polyimide/polyaniline nanofiber composites were prepared by in situ polymerization with various weight percentages of polyaniline (PANI) nanofibers. X-ray diffraction (XRD) and Fourier transform infrared spectra (FT-IR), proved the successful preparation of PANI nanofiber composite films. In addition, thermal stability of PI/PANI nanofiber composites was superior relative to PI, having 10 % gravimetric loss in the range of 623 °C to 671 °C and glass transition temperature of 289 °C to 297 °C. Furthermore, the values of the loss tangent tanδ and AC conductivity σAC of the nanocomposite films were notably higher than those of pure polyimide. The addition of 5 wt.% to 15 wt.% PANI nanofiber filler enhanced the activation energy of PI composites from 0.37 eV to 0.34 eV.

scholarly journals Synthesis and Characterization of New Polyimide/Organoclay Nanocomposites Containing Benzophenone Moieties in the Main Chain

2017 ◽  
Vol 57 (2) ◽  
Author(s):  
Khalil Faghihi ◽  
Mostafa Ashouri ◽  
Akram Feyzi
Keyword(s):  
Main Chain ◽  
In Situ Polymerization ◽  
Clay Content ◽  
Nanocomposite Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

<p>A series of nanocomposites consist of organic polyimide and organo-modified clay content varying from 0 to 5 wt%, were successfully prepared by in situ polymerization. Polyimide used as a matrix of nanocomposite was prepared through the reaction of 1,4-bis [4-aminophenoxy] butane (APB) and 3،3΄،4،4΄-benzophenone tetra carboxylic dianhydride (BTDA) in N,N-dimethylacetamide (DMAc). The resulting nanocomposite films were characterized by FT-IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA).</p>

A polyaniline/graphene nanocomposite prepared by in situ polymerization of polyaniline onto polyanion grafted graphene and its electrochemical properties

RSC Advances ◽  
2014 ◽  
Vol 4 (15) ◽  
pp. 7673-7681 ◽  
Author(s):  
Tao Wu ◽  
Xiaoyang Xu ◽  
Lei Zhang ◽  
Huabin Chen ◽  
Jianping Gao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Hydrazine Hydrate ◽  
Reduced Graphene Oxide ◽  
Radical Polymerization ◽  
In Situ Polymerization ◽  
Reduced Graphene ◽  
Graphene Nanocomposite

Poly(sodium 4-styrensulfonate), a polyanion, was grafted onto reduced graphene oxide (RGO-g-PSSNa) by in situ radical polymerization and was then chemically reduced with hydrazine hydrate.

Preparation of Low-K Fluorinated Polyimide/Phlogopite Nanocomposites

2008 ◽  
Vol 47-50 ◽  
pp. 987-990
Author(s):  
Yi He Zhang ◽  
Qing Song Su ◽  
Li Yu ◽  
Li Bing Liao ◽  
Hong Zheng ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Layered Silicate ◽  
Polymer Nanocomposite ◽  
Nanocomposite Films ◽  
Polymerization Process ◽  
Ultrasonic Dispersion ◽  
Thermal Stabilities ◽  
Fluorinated Polyimide ◽  
Polyimide Matrix

Phlogopite with layered silicate structure had been firstly chemically modified via an in situ intercalation method, and phlogopite-polymer nanocomposite films were prepared from 2,2'-bis (3,4-dicarboxyphenyl) hexafluropropane dianhydride (6FDA) and oxydimethyl aniline (ODA) in N,N-dimethylacetamide as a solvent by using in-situ polymerization process combined with ultrasonic dispersion and multi-step curing. The structure of phlogopite minerals and its polymer nanocomposites were characterized by X-ray diffraction (XRD) and infrared spectra (FTIR) respectively. The experimental results indicated that the phlogopites with layered nanostructure had lost their ordered structure and had been exfoliated or intercalated. Thereafter, they were dispersed randomly in the polyimide matrix. The dependence of dielectric properties and thermal stabilities of the nanocomposite films on the phlogopite content and frequency were studied.

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