ESR and XRD investigation of effects induced by gamma radiation on PVA-TiO2 membranes

Todicǎ, M.; Stefan, Traian; Trandafir, D.L.; Simon, S.

doi:10.2478/s11534-013-0276-3

Cited by 9 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This supposition is in agreement with the model proposed by Kainuma and French, suggesting that glucose polymers form double helices upon addition of water [29]. The effect is the decrease of interplanar distances [30,31]. The intense peaks at 2 = 15.3 ∘ , 17.4 ∘ , and 18.3 ∘ of pure starch are missing in the spectra of samples P1-P3, but we can see a peak at 2 = 16.9 ∘ .…”

Section: Resultssupporting

confidence: 92%

XRD Investigation of Some Thermal Degraded Starch Based Materials

Todicǎ

Nagy

Niculăescu

et al. 2016

Journal of Spectroscopy

Self Cite

View full text Add to dashboard Cite

The thermal degradation of some starch based materials was investigated using XRD method. The samples were obtained by thermal extrusion of mixtures of different proportions of starch, glycerol, and water. Such materials are suitable for the manufacturing of low pollutant packaging. Thermal degradation is one of the simplest ways to destroy such materials and this process is followed by structural modification of the local ordering of samples, water evaporation, crystallization, oxidation, or destruction of the chemical bonds. These modifications need to be studied in order to reduce to the minimum production of pollutant residues by burning process. XRD measurements show modification of the local ordering of the starch molecules depending on the temperature and initial composition of the samples. The molecular ordering perturbation is more pronounced in samples with low content of starch.

show abstract

Section: Resultssupporting

confidence: 92%

XRD Investigation of Some Thermal Degraded Starch Based Materials

Todicǎ

Nagy

Niculăescu

et al. 2016

Journal of Spectroscopy

Self Cite

View full text Add to dashboard Cite

show abstract

“…84–1286 and 88–1175). [ 31,32 ] These overall peaks show that the crystalline nature of PVA decreases with addition of TiO 2 . [ 15 ] The appearance of this new peak might be due to dissociation of PVA, and TiO 2 particles during the stirring process.…”

Section: Resultsmentioning

confidence: 99%

Structural and Dielectric Properties of Polyvinyl Alcohol‐TiO₂ Doped Thin Films

Dhokne¹,

Pathare

2021

Macromolecular Symposia

View full text Add to dashboard Cite

Polyvinyl alcohol(PVA)‐titanium dioxide(TiO2) polymer composite films are synthesized by well‐recognized and low cost method of solvent casting. The prepared composite films are characterized by FTIR, XRD, and FESEM. The real electric modulus (M’) spectra show large increment with frequency for 5wt% of TiO2 as compared to other compositions. The appearance of peaks for each concentration of TiO2 in M” spectra specifies that strong coupling in the movement of polymer motion and ions. The impedance plots of real impedance (Z’) versus imaginary impedance (Z”) shows semicircles, which diameter and thereby bulk resistance (Rb) is decreased with the loading of TiO2. AC conductivity (σAC) obeys the universal power law. The prepared PVA/TiO2 films can be used in a direct methanol fuel cell, and in optoelectronic devices.

show abstract

“…Figure . 3. shows a clear and distinct peak from UV-A range, this peak correlated to the electronic transition highest occupied and lowest unoccupied molecular orbital's (HOMO-LUMO). Furthermore, the dispersed HNTs undergo exfoliation and being a reason to form tough peak at 340 nm which may be regarded due to strong interaction between HNT and carbonyl groups of PC [71,72]. Eventually the NCs exhibits hypsochromic shift with the increase in conjugation between HNT and PC indicating the inter chain interaction and stacking.…”

Section: Uv-visible Absorption Studiesmentioning

confidence: 99%

Nano Clay Reinforcement of Thermoplastics for Engineering Applications

Santhosh¹

2022

Materials Research Foundations

View full text Add to dashboard Cite

Thermoplastics are widely used advanced materials in various fields as an essential product. The increasing interest in replacing thermosets due to their advanced properties such as high toughness, manufacturing time and processing possibilities. Thermoplastics exhibit poor mechanical properties in several engineering applications; hence the use of nano clay minerals enhances the mechanical property of thermoplastics to be used in many engineering applications. The reinforcing effect of clay minerals (nano-clay) in various thermoplastics such as polycarbonate (PC), polypropylene (PP), Acrylonitrile butadiene styrene (ABS) and high-density polyethylene (HDPE), which are popularly known as commodity plastics and are widely used in fabricating automotive parts and household articles. The frequently used clay minerals such as montmorillonite, bentonite, hectorite, halloysites and kaolinite as filler material in thermoplastics make them suitable in many engineering applications with enhanced mechanical properties. The integration of clay minerals into a polymer matrix allows both properties from clay minerals and polymer to be combined so as to exploit entirely new functionalities. In recent years, owing to a number of practical applications in the field of opto-electronics, a great deal of interest has been paid to study optical, dielectric and conduction behaviours of various polymeric materials. This chapter is designed to be a source for nano-clay reinforced thermoplastic nano-composite research including synthesis, characterization, structure/property relationship and applications considering optical and electrical conductivity which are discussed.

show abstract

ESR and XRD investigation of effects induced by gamma radiation on PVA-TiO2 membranes

Cited by 9 publications

References 26 publications

XRD Investigation of Some Thermal Degraded Starch Based Materials

XRD Investigation of Some Thermal Degraded Starch Based Materials

Structural and Dielectric Properties of Polyvinyl Alcohol‐TiO₂ Doped Thin Films

Nano Clay Reinforcement of Thermoplastics for Engineering Applications

Contact Info

Product

Resources

About

ESR and XRD investigation of effects induced by gamma radiation on PVA-TiO2 membranes

Cited by 9 publications

References 26 publications

XRD Investigation of Some Thermal Degraded Starch Based Materials

XRD Investigation of Some Thermal Degraded Starch Based Materials

Structural and Dielectric Properties of Polyvinyl Alcohol‐TiO2 Doped Thin Films

Nano Clay Reinforcement of Thermoplastics for Engineering Applications

Contact Info

Product

Resources

About

Structural and Dielectric Properties of Polyvinyl Alcohol‐TiO₂ Doped Thin Films