scholarly journals Application of Polyaniline for Flexible Semiconductors

Coatings ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 49
Author(s):  
Ana-Maria Mocioiu ◽  
Ioan Albert Tudor ◽  
Oana Cătălina Mocioiu
Keyword(s):  
In Situ Polymerization ◽  
Attenuated Total Reflectance ◽  
Synthesis Methods ◽  
Force Microscopy ◽  
Atomic Force ◽  
Structure Morphology ◽  
Polystyrene Sulfonic Acid ◽  
One Step ◽  
Polymerization Method

“In situ” polymerization method was used to develop PANI-PSSA /textile. Polyaniline doped with polystyrene sulfonic acid (PANI-PSSA) used as coatings for textiles were obtained by aqueous and emulsion route. The emulsion route uses chloroform as solvent. Polymerization has been achieved in one step on the wool or polyamide textiles. For coated and uncoated textiles, dried at room temperature, were characterized structurally by Infrared Spectroscopy with Attenuated Total Reflectance (ATR), morphologically by Scanning Electron Microscopy (SEM), and by Atomic Force Microscopy (AFM) and electrically. The synthesis methods lead to differences in structure, morphology and properties of the coated polyamide and wool textiles.

Structure and Properties of Hybrid Polyurethane Composites with Carboxyalumoxanes

2008 ◽  
Vol 587-588 ◽  
pp. 212-216 ◽  
Author(s):  
Magdalena Jurczyk-Kowalska ◽  
Joanna Ryszkowska
Keyword(s):  
In Situ Polymerization ◽  
Structure And Properties ◽  
Mechanical Mixing ◽  
Scanning Calorimetry ◽  
Force Microscopy ◽  
Atomic Force ◽  
The Matrix ◽  
Polyurethane Composites ◽  
Polyurethane Matrix

Carboxyalumoxanes have been incorporated into a polyurethane matrix by in situ polymerization. The filler was dispersed in the polyurethane matrix by either both ultrasonic and mechanical mixing or by mechanical mixing alone. The physico-mechanical properties of the composites have been characterized using scanning electron microscopy (SEM), atomic force microscopy (AFM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Using ultrasound improves the degree of dispersion of the fillers in the matrix, but it also causes changes in the structure of the polyurethane matrix.

Fabrication of Two-Dimensional PEDOT:PSS Nanosheets Through In Situ Formed Complexes

NANO ◽  
2015 ◽  
Vol 10 (01) ◽  
pp. 1550011 ◽  
Author(s):  
Kun Zhang ◽  
Shiren Wang
Keyword(s):  
In Situ Polymerization ◽  
Molecular Complexes ◽  
Water Soluble ◽  
Strong Interactions ◽  
Two Dimensional ◽  
Force Microscopy ◽  
Atomic Force ◽  
Ftir Characterization ◽  
Transmission Electron

This paper presents a simple and effective method to fabricate water-soluble two-dimensional (2D) conductive poly(3,4-ethylenedioxythiophene):poly (sodium 4-styrenesulfonate) (PEDOT:PSS) nanosheets. Linear PSS is water-soluble and exhibits a quasi 1D structure in the dilute solution. Addition of 3,4-ethylenedioxythiophene (EDOT) monomers into acidic solutions would form 2D molecular complexes due to charge attraction. In situ polymerization of the ethylenedioxythiophene monomers produces 2D poly EDOT nanosheets. Both transmission electron microscopy and atomic force microscopy characterizations have confirmed the 2D polymeric nanosheets. Further Fourier transform infrared (FTIR) characterization also validated that the 2D nanosheet is composed of EDOT-based units and Raman spectroscopy indicated the strong interactions between ethylenedioxythiophene units in the 2D nanostructures. The electrical conductivity is measured to as high as 551.58 S/m for the thin film of as-produced 2D PEDOT:PSS nanosheets.

Preparation of Epoxy Resin/Montmorillonite Composites by Monomer Insert In Situ Polymerization

2010 ◽  
Vol 178 ◽  
pp. 236-241
Author(s):  
Jing Xie ◽  
Shang Yue Shen ◽  
Yu Xia Luo ◽  
Meng Meng Zhang ◽  
Ying Chen
Keyword(s):  
Tensile Strength ◽  
Glass Transition ◽  
Transition Temperature ◽  
Epoxy Resin ◽  
In Situ Polymerization ◽  
Raw Materials ◽  
One Step ◽  
Polymerization Method ◽  
Intercalative Polymerization

Epoxy resin/ montmorillonite (EP/MMT) composite was prepared via monomer insert in-situ polymerization. It was shown that the EP/MMT composites could be successfully synthesized from the raw materials only by one step, making it simpler than traditional in-situ intercalative polymerization method. The d001 spacing of montmorillonite was tested by XRD and increased to 4.30nm. The results showed that tensile strength and impact strength were improved by 98.11 and 93.69%, respectively. The glass transition temperature was increased by 17.3 °C.

Poly(vinyl alcohol)/graphene oxide nanocomposites prepared by in situ polymerization with enhanced mechanical properties and water vapor barrier properties

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49448-49458 ◽  
Author(s):  
Jiaojiao Ma ◽  
Ying Li ◽  
Xiande Yin ◽  
Yu Xu ◽  
Jia Yue ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
In Situ Polymerization ◽  
Barrier Properties ◽  
Poly Vinyl Alcohol ◽  
Water Vapor Barrier ◽  
One Step ◽  
Polymerization Method

A novel and one-stepin situpolymerization method for preparing the poly(vinyl alcohol) (PVA)/graphene oxide (GO) nanocomposites.

Preparation and Characterization of Polyaniline/PMN Composite by In Situ Polymerization Method

2009 ◽  
Vol 66 ◽  
pp. 230-233 ◽  
Author(s):  
Tao Wei ◽  
Zhi Xiong Huang ◽  
Guo Rui Yang ◽  
Min Xian Shi
Keyword(s):  
Weight Loss ◽  
Steric Hindrance ◽  
In Situ Polymerization ◽  
Reaction Conditions ◽  
One Step ◽  
Ft Ir ◽  
Polymerization Method ◽  
Crystallization Degree

The PANI/PMN composite was prepared by one-step in-situ polymerization method and was characterized via FT-IR, XRD, SEM and TG. The results indicate that the best reaction conditions of in-situ polymerization are 0°C/24h.The PMN powder are entirely coated with PANI, when composite contains more than 60% PANI by volume. The steric hindrance effect of PMN powder decreases the crystallization degree of PANI which polymerizes on the surface of PMN powder in the process of in-situ polymerization. The main weight loss occurring between 300 and 480°C corresponds to the degradation of the PANI polymer chain.

scholarly journals Ultrafine metal-polymer catalysts based on polyconjugated systems for Fisher–Tropsch synthesis

2020 ◽  
Vol 92 (6) ◽  
pp. 977-984
Author(s):  
Mayya V. Kulikova ◽  
Albert B. Kulikov ◽  
Alexey E. Kuz’min ◽  
Anton L. Maximov
Keyword(s):  
Tropsch Synthesis ◽  
X Ray Diffraction ◽  
Fischer Tropsch ◽  
Force Microscopy ◽  
Composite Catalysts ◽  
Fe Catalyst ◽  
Atomic Force ◽  
And Function ◽  
Metal Polymer

AbstractFor previously studied Fischer–Tropsch nanosized Fe catalyst slurries, polymer compounds with or without polyconjugating structures are used as precursors to form the catalyst nanomatrix in situ, and several catalytic experiments and X-ray diffraction and atomic force microscopy measurements are performed. The important and different roles of the paraffin molecules in the slurry medium in the formation and function of composite catalysts with the two types of aforementioned polymer matrices are revealed. In the case of the polyconjugated polymers, the alkanes in the medium are “weakly” coordinated with the metal-polymer composites, which does not affect the effectiveness of the polyconjugated polymers. Otherwise, alkane molecules form a “tight” surface layer around the composite particles, which create transport complications for the reagents and products of Fischer-Tropsch synthesis and, in some cases, can change the course of the in situ catalyst formation.

Atomic force microscopy of in situ deformed nickel thin films

1999 ◽  
Vol 353 (1-2) ◽  
pp. 194-200 ◽  
Author(s):  
C. Coupeau ◽  
J.F. Naud ◽  
F. Cleymand ◽  
P. Goudeau ◽  
J. Grilhé
Keyword(s):  
Thin Films ◽  
Atomic Force Microscopy ◽  
Force Microscopy ◽  
Nickel Thin Films ◽  
Atomic Force
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