scholarly journals The Surface Structure and Thermal Properties of Novel Polymer Composite Films Based on Partially Phosphorylated Poly(vinyl alcohol) with Aluminum Phosphate

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Asmalina Mohamed Saat ◽  
Mohd Rafie Johan
Keyword(s):  
Thermal Stability ◽  
Fourier Transform ◽  
Thermal Properties ◽  
Surface Structure ◽  
Composite Films ◽  
Aluminum Phosphate ◽  
Poly Vinyl Alcohol ◽  
Solution Casting ◽  
Casting Technique ◽  
Solution Casting Technique

Partially phosphorylated polyvinyl alcohol (PPVA) with aluminum phosphate (ALPO4) composites was synthesized by solution casting technique to produce(PPVA)100-y-(ALPO4)y(y = 0, 1, and 2). The surface structure and thermal properties of the films were characterized using Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). The results showed that the films have higher thermal stability with strong bonding between PPVA and ALPO4.

Fabrication and Morphological Characterization of Barium Titanate-Based Polymeric Nanocomposite Thin Films

2018 ◽  
pp. 50-59 ◽  
Author(s):  
Sudhanshu Singh ◽  
Umesh Kumar Dwivedi
Keyword(s):  
Barium Titanate ◽  
Room Temperature ◽  
Composite Films ◽  
Morphological Characterization ◽  
Solution Casting ◽  
Weight Percentage ◽  
Casting Technique ◽  
Nanocomposite Thin Films ◽  
Solution Casting Technique

In this critical review chapter, the authors explain the development of composite films of Barium Titanate (BaTiO3) and Poly (methyl methacrylate) prepared by solution casting technique. Different weight percentage composition of BaTiO3 has been selected to find out the best optimization condition for further investigation and correlate the results. The structural properties have been carried out at room temperature using XRD. Efforts have been made to correlate the results with investigated XRD results of pure BaTiO3 and its composites as observed by other workers at room temperature. The flow of experimental work and microscopic images are explained.

Surface, Temperature and Optical Properties Pd-TiO2 Doped PVA Nanocomposite

2019 ◽  
Vol 962 ◽  
pp. 77-81
Author(s):  
B. Guruswamy ◽  
V. Ravindrachary ◽  
C. Shruthi ◽  
M. Mylarappa ◽  
G.O. Obaiah
Keyword(s):  
Optical Properties ◽  
Thermal Properties ◽  
Nanocomposite Films ◽  
Solution Casting ◽  
Absorption Method ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Modified Surface ◽  
Uv Visible ◽  
Effect Of Pd

The effect of Pd-TiO2 nanoparticle doping on structural, optical and thermal properties of the PVA polymer has been investigated using FTIR, UV-Visible, TGA and FESEM analysis. nanosized Pd-TiO2 particles were synthesized using standard method. Pure and Pd-TiO2/PVA nanocomposite films were prepared using solution casting technique. The FTIR study confirmed that the Pd-TiO2 nanoparticles interacts with the OH group of PVA polymer and forms the complex. The presence of these complexes affects the optical and thermal properties the composite. The change in the optical properties was studied using UV-Vis absorption method. The effect of doping on the thermal properties was studied using TGA method and the modified surface morphology using FESEM.

scholarly journals Effect of ultrahigh diluted homeopathic medicines on the electrical properties of PVDF-HFP

2021 ◽  
Vol 15 (1) ◽  
pp. 10-17
Author(s):  
Ahana Chatterjee ◽  
Biplab kumar Paul ◽  
Subrata Kar ◽  
Sukhen Das ◽  
Ruma Basu ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
Simple Approach ◽  
Simple Solution ◽  
Solution Casting ◽  
Casting Technique ◽  
Ftir Studies ◽  
Poly Vinylidene Fluoride ◽  
Solution Casting Technique

In an effort to improve the electrical properties of the electroactive Poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP), we introduced a novel and simple approach to synthesize PVDF-HFP composite films by incorporating ultrahigh dilutions of two homeopathic medicines Ferrum metallicum (FM) and Zincum oxidatum (ZO) in different potencies. The homeo-PVDF-composite films (HPCF) were synthesized by simple solution casting technique. XRD, FESEM, FTIR studies were performed to check the presence of nanoparticles in the film. The electrical properties of the HPCF samples get enhanced significantly due to the incorporation of the medicines and the effect increases with the increase in potency of the medicines.

SEPARATION OF ETHYL ACETATE FROM WATER MIXTURE USING SAGO/POLY (VINYL ALCOHOL) BLENDED MEMBRANES: EFFECT OF SAGO BLENDED RATIOS

2015 ◽  
Vol 75 (1) ◽  
Author(s):  
Abdulhakim M. Alamaria ◽  
Mohd Ghazali Mohd Nawawi
Keyword(s):  
Ethyl Acetate ◽  
Poly Vinyl Alcohol ◽  
Water Mixture ◽  
Solution Casting ◽  
Casting Technique ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Blend Membranes ◽  
Solution Casting Technique ◽  
Feed Temperature

Relatively new Sago/PVA blended membranes were prepared by solution casting technique. Homogenous sago/PVA membranes were prepared with different ratio of sago content in the membrane. The blended membranes were characterized using Fourier Transform Infrared Spectroscopy (FTIR), contact angle measurements, and degree of swelling (DS). The blended membranes were tested for pervaporation of ethyl acetate-water mixture at a range of 1-4wt% of water in the solution. The effects of feed temperature and concentration were investigated. The permeation flux increased around 30% with sago content in the blend membranes from 3wt% to 7wt% at 60oC. However, the separation factor decreased from 433 to 387 for same membrane.

scholarly journals Ionic conductivity and dielectric studies of LiClO4 doped poly(vinylalcohol)(PVA)/chitosan(CS) composites

2014 ◽  
Vol 04 (04) ◽  
pp. 1450033 ◽  
Author(s):  
Sunil G. Rathod ◽  
R. F. Bhajantri ◽  
V. Ravindrachary ◽  
P. K. Pujari ◽  
T. Sheela
Keyword(s):  
Ionic Conductivity ◽  
Loss Factor ◽  
Room Temperature ◽  
Composite Films ◽  
Solution Casting ◽  
Dielectric Studies ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Polymer Host ◽  
Ft Raman

This paper focuses on the dielectric constant (ε′), dielectric loss factor (ε″) and frequency dependent conductivity (σac) properties of newly prepared poly(vinylalcohol) (PVA) chitosan (CS) composite films incorporated with different concentrations of LiClO 4. The composite films were prepared using solution casting technique. The complexation between salt and polymer host is confirmed by FT Raman and UV-Vis studies. The sample containing 20 wt.% LiClO 4 exhibits a highest ionic conductivity of 3 × 10-6 S/cm at room temperature. The dielectric properties of the composites follow non-Debye behavior.

Fabrication of Bioactive Polycaprolactone by Incorporation of Apatite Nuclei

2018 ◽  
Vol 782 ◽  
pp. 91-97
Author(s):  
Hasnat Zamin ◽  
Tomoko Hiruta ◽  
Takeshi Yabutsuka ◽  
Shigeomi Takai
Keyword(s):  
Calcium Phosphate ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Fine Particles ◽  
Composite Films ◽  
Solution Casting ◽  
Casting Technique ◽  
Doctor Blade ◽  
Solution Casting Technique

When the pH or the temperature of a simulated body fluid is raised, fine particles of calcium phosphate are precipitated, which are named apatite nuclei (AN). In this study, we aimed to impart bioactivity to polycaprolactone by incorporating AN. AN-PCL composite films having different weight percentages of AN in PCL were fabricated by solution casting technique, using doctor blade method. Results showed that more than 20 wt.% AN-PCL films were fully covered with hydroxyapatite layer in three days soaking period in SBF.

Interaction between Carboxy Methylcellulose and Salicylic Acid Solid Biopolymer Electrolytes

2015 ◽  
Vol 1107 ◽  
pp. 223-229 ◽  
Author(s):  
Mohd Lukhman Hakim Rozali ◽  
Zakiyah Ahmad ◽  
M.I.N. Isa
Keyword(s):  
Fourier Transform ◽  
Salicylic Acid ◽  
Infrared Spectroscopy ◽  
Ionic Conductivity ◽  
Room Temperature ◽  
Solution Casting ◽  
Arrhenius Behavior ◽  
Casting Technique ◽  
Biopolymer Electrolytes ◽  
Solution Casting Technique

In this research, solid biopolymer electrolytes (SBEs) based on carboxy methylcellulose (CMC) has been prepared by doping different concentration of salicylic acid (SA) via solution casting technique. Fourier Transform Infrared spectroscopy was used to study the interaction between the host and ionic dopant. New peaks were observed at 1700, 2890, 2920 cm-1.The highest ionic conductivity achieved at room temperature is 9.50 × 108 S cm1 for CMC incorporated with 7 wt. % SA. In addition, the temperature dependence of the SBEs exhibit Arrhenius behavior.

scholarly journals Fabrication and Characterization of Chitosan/Cellulose Nanocrystal/Glycerol Bio-Composite Films

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1096
Author(s):  
Kusmono Kusmono ◽  
Muhammad Waziz Wildan ◽  
Fadhlan Ihsan Lubis
Keyword(s):  
Thermal Stability ◽  
Water Absorption ◽  
Light Transmission ◽  
Composite Films ◽  
Tensile Modulus ◽  
Chitosan Film ◽  
Cellulose Nanocrystal ◽  
Casting Technique ◽  
Solution Casting Technique ◽  
Strength And Stiffness

Cellulose nanocrystal (CNC)-reinforced bio-composite films containing glycerol were produced using the solution casting technique. The influences of the addition of CNC (2, 4, and 8 wt%) and glycerol (10, 20, and 30 wt%) on the properties of the bio-composite films were studied in the present work. The resulting films were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and thermogravimetry analysis (TGA), and according to their tensile, water absorption, and light transmission behavior. The introduction of 4 wt% CNC into the chitosan film did not affect the thermal stability, but the presence of 20 wt% glycerol reduced the thermal stability. The addition of 4 wt% CNC to the chitosan film increased its tensile strength, tensile modulus, and elongation at break by 206%, 138%, and 277%, respectively. However, adding more than 8 wt% CNC resulted in a drastic reduction in the strength and ductility of the chitosan film. The highest strength and stiffness of the chitosan bio-composite film were attained with 4 wt% CNC and 20 wt% glycerol. The water absorption and light transmission of the chitosan film were reduced dramatically by the presence of both CNC and glycerol.

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