Comparison Between Poly(methyl methacrylate)-Carbon Black and Polyaniline Conductive Coatings

2008 ◽  
Vol 8 (5) ◽  
pp. 2637-2642 ◽  
Author(s):  
L. Li ◽  
E. Liu ◽  
L. Z. Goh ◽  
Y. P. Lee
Keyword(s):  
Carbon Black ◽  
Methyl Methacrylate ◽  
Coating Thickness ◽  
Carbon Nanoparticles ◽  
Composite Coatings ◽  
Conductive Polymer ◽  
Dip Coating ◽  
Particle Dispersion ◽  
Conductive Coatings ◽  
Poly Methyl Methacrylate

This work aims to develop and compare two types of conductive, polymer-based coatings via a dip coating process. The first type of coatings was made by dispersing and incorporating carbon black (CB) nanoparticles in a poly(methyl methacrylate) (PMMA) solution followed by dip coating. The CB content and dipping parameters were varied to explore their effects on the particle dispersion, coating thickness, and conductivity of the coatings. The dispersion of the CB particles in the polymer matrix was examined by scanning electron microscopy (SEM), while the coating thickness and conductivity were measured with a surface profilometer and a four-point probe electrometer, respectively. The good dispersion of carbon nanoparticles in the PMMA matrix was observed in the coatings. The conductivity of the PMMA-CB composite coatings was found to be mainly affected by CB content, particle dispersion as well as coating thickness. On the other hand, polyaniline (PANI) was used to make conductive coatings by dip coating and doping, and the advantages and limitations of the PANI coatings were compared with the PMMA-CB coatings.

scholarly journals Percolation and Gas Sensing Behaviours of Ternary Conductive Composites: Vapour-Grown Carbon Fibres/Carbon Black/Poly(Methyl Methacrylate)

2003 ◽  
Vol 12 (6) ◽  
pp. 096369350301200
Author(s):  
Xian Ming Dong ◽  
Zhi Pei Qin ◽  
Ruo Wen Fu ◽  
Ming Qiu Zhang ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Carbon Black ◽  
Methyl Methacrylate ◽  
Response Rate ◽  
Gas Sensing ◽  
Conductive Polymer ◽  
Filler Loading ◽  
Carbon Fibres ◽  
Percolation Process ◽  
Poly Methyl Methacrylate ◽  
Conductive Composites

To reduce the dosage of carbon black (CB) in conductive polymer composites, vapour-grown carbon fibre (VGCF) were incorporated in the present work. The experimental results indicated that only small amount of VGCF is sufficient to significantly improve the conductivity of the composites based on poly(methyl methacrylate) (PMMA), as characterized by an additional percolation process. Besides, the ternary composites exhibit electrical responsivity to saturated ethyl acetate vapour as high as 105 in association with good reproducibility. In comparison to CB/PMMA composites having the same filler loading, VGCF/CB/PMMA composites provide higher response rate and recoverability.

scholarly journals Poly(Methyl Methacrylate) Coatings Containing Flame Retardant Additives from Suspensions in Water-2-Propanol

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1974
Author(s):  
Xuelin Li ◽  
Zhengzheng Wang ◽  
Sadman Sakib ◽  
Ritch Mathews ◽  
Igor Zhitomirsky
Keyword(s):  
Methyl Methacrylate ◽  
Flame Retardant ◽  
Composite Coatings ◽  
Polymer Concentration ◽  
Colloidal Suspensions ◽  
Dip Coating ◽  
Aqueous Corrosion ◽  
Salting Out ◽  
Poly Methyl Methacrylate ◽  
Coating Technique

A dip-coating technique is designed for deposition of poly(methyl methacrylate) (PMMA) from water/2-propanol mixture, avoiding the use of traditional toxic solvents. Solutions of PMMA macromolecules with high molecular weight (MW) are obtained for a water/2-propanol ratio of 0.15–0.33 and the solubilization mechanism is discussed. The ability to use concentrated PMMA solutions and high MW of the polymer are the key factors for the successful dip coating deposition. The coating mass for 10 g L−1 polymer solutions shows a maximum at a water/2-propanol ratio of 0.25. The deposition yield increases with the polymer concentration increase and with an increasing number of the deposited layers. PMMA deposits protect stainless steel from aqueous corrosion. The coating technique allows for the fabrication of composite coatings, containing flame-retardant materials (FRMs), such as commercial halloysite, huntite, hydrotalcite, and synthesized Al(OH)3, in the PMMA matrix. The FRM content in the coatings is modified by variation of the FRM content in colloidal suspensions. A fundamentally new method is developed, which is based on the salting out aided dispersive extraction of Al(OH)3 from the aqueous synthesis medium to 2-propanol. It is based on the use of hexadecylphosphonic acid molecules as extractors. The method offers advantages of reduced agglomeration.

A Novel Polyaniline Nanocomposite with Doping Effects of Poly(Methyl Methacrylate) and TiO2 Nanoparticles

2016 ◽  
Vol 44 ◽  
pp. 281-292 ◽  
Author(s):  
Unathi Sidwaba ◽  
Usisipho Feleni ◽  
Hlamulo Makelane ◽  
Ezo Nxusani ◽  
Lindsay Wilson ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Titanium Dioxide Nanoparticles ◽  
Conductive Polymer ◽  
Chemical Properties ◽  
Poly Methyl Methacrylate ◽  
Wave Voltammetry ◽  
Physico Chemical ◽  
Doping Effects ◽  
Vis Spectroscopy ◽  
Polyaniline Nanocomposite

Polyaniline (PANI) is a globally investigated conductive polymer with a variety of applications in various fields due to its ease of synthesis and modification. One method of enhancing the physico-chemical properties and processability of PANI is the incorporation of polymers and nanoparticles to form composite and hybrid materials with new features. This study reports the electrochemical synthesis of a polyaniline nanocomposite that incorporates titanium dioxide nanoparticles (TiO2) and poly (methyl methacrylate) (PMMA). The significant effects of PMMA and TiO2 nanoparticles on structural, morphological, optical and electrochemical properties of native polyaniline were investigated using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, cyclic voltammetry (CV) and square wave voltammetry (SWV). The formation and deformation of relevant peaks observed from the FTIR spectra confirm the intrusion of PMMA and TiO2 into PANI while the voltammetric results show that the incorporation of both dopants significantly enhanced the electroactivity of PANI in a neutral pH medium.

Dynamic percolation phenomenon of poly(methyl methacrylate)/surface fluorinated carbon black composite

2003 ◽  
Vol 89 (4) ◽  
pp. 1151-1155 ◽  
Author(s):  
A. Katada ◽  
Y. Konishi ◽  
T. Isogai ◽  
Y. Tominaga ◽  
S. Asai ◽  
...  
Keyword(s):  
Carbon Black ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Fluorinated Carbon ◽  
Percolation Phenomenon

Viscoelastic and electrical behavior of poly(methyl methacrylate)/carbon black composites prior to and after annealing

Polymer ◽  
2017 ◽  
Vol 113 ◽  
pp. 34-38 ◽  
Author(s):  
Yamin Pan ◽  
Xianhu Liu ◽  
Joachim Kaschta ◽  
Xiaoqiong Hao ◽  
Chuntai Liu ◽  
...  
Keyword(s):  
Carbon Black ◽  
Methyl Methacrylate ◽  
Electrical Behavior ◽  
Poly Methyl Methacrylate
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