Effect of Barium Titanate on the Thermal, Morphology, Surface, and Mechanical Properties of the Thermoplastic Polyurethane/Barium Titanate Composites

Şen, Ferhat; Baştürk, Emre; Karadoğan, Betül; Madakbaş, Seyfullah; Kahraman, Memet Vezi̇r

doi:10.1080/03602559.2015.1132455

Cited by 3 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the studies reported thus far, the IR band of bending vibrational modes of N-H can be observed at 816 cm −1 , while the absorption bands from 1000-1150, 1202, 1597, and 3100-3600 cm −1 are attributed to the vibrational modes of stretching C(O)-OC, CO stretching in the ether group, C-C + C=C in the benzene ring, and the stretching vibrational modes of the NH group, respectively [38][39][40]. The IR bands of 2853 and 2938 cm −1 are attributed to the anti-symmetrical and symmetrical vibrational modes of the CH bonds, respectively [41,42]. The absorption band located at 1701 cm −1 is assigned to the hydrogen-linked urethane carbonyl group (C=O) [43,44], while the free carbonyl vibration modes are attributed to the IR band located at 1730 cm −1 [41][42][43][44][45].…”

Section: Morphological and Structural Properties Of The Composites Bamentioning

confidence: 98%

“…The IR bands of 2853 and 2938 cm −1 are attributed to the anti-symmetrical and symmetrical vibrational modes of the CH bonds, respectively [41,42]. The absorption band located at 1701 cm −1 is assigned to the hydrogen-linked urethane carbonyl group (C=O) [43,44], while the free carbonyl vibration modes are attributed to the IR band located at 1730 cm −1 [41][42][43][44][45]. Moreover, the IR band at 3300 cm −1 is associated with the NH group [45], which means that a partial inter-and intra-molecular hydrogen linkage of NH group is made between the adjacent urethane segments.…”

Section: Morphological and Structural Properties Of The Composites Bamentioning

confidence: 99%

See 1 more Smart Citation

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

et al. 2021

View full text Add to dashboard Cite

In this work, new films containing composite materials based on blends of thermoplastic polymers of the polyurethane (TPU) and polyolefin (TPO) type, in the absence and presence of BaTiO3 nanoparticles (NPs) with the size smaller 100 nm, were prepared. The vibrational properties of the free films depending on the weight ratio of the two thermoplastic polymers were studied. Our results demonstrate that these films are optically active, with strong, broad, and adjustable photoluminescence by varying the amount of TPU. The crystalline structure of BaTiO3 and the influence of thermoplastic polymers on the crystallization process of these inorganic NPs were determined by x-ray diffraction (XRD) studies. The vibrational changes induced in the thermoplastic polymer’s matrix of the BaTiO3 NPs were showcased by Raman scattering and FTIR spectroscopy. The incorporation of BaTiO3 NPs in the matrix of thermoplastic elastomers revealed the shift dependence of the photoluminescence (PL) band depending on the BaTiO3 NP concentration, which was capable of covering a wide visible spectral range. The dependencies of the dielectric relaxation phenomena with the weight of BaTiO3 NPs in thermoplastic polymers blends were also demonstrated.

show abstract

Section: Morphological and Structural Properties Of The Composites Bamentioning

confidence: 98%

Section: Morphological and Structural Properties Of The Composites Bamentioning

confidence: 99%

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

et al. 2021

View full text Add to dashboard Cite

show abstract

“…It is well known that hydrogen bonding in polyurethanes is mainly attributed to the interactions of NH with the carbonyl groups in urethane groups of the hard segments (HS) or interactions with ether groups characteristic of the soft segments (SS). [ 16 ] The recorded spectra of pure TPU and the corresponding composites are shown in Figure . The spectrum of pure TPU showed an absorption band at 3325 cm −1 that was attributed to the hydrogen‐bonded NH stretching vibration in the urethane group.…”

Section: Resultsmentioning

confidence: 99%

“…The spectrum of pure TPU showed an absorption band at 3325 cm −1 that was attributed to the hydrogen‐bonded NH stretching vibration in the urethane group. [ 16 ] The strong absorption peaks positioned at 2916 and 2846 cm −1 were correlated to the asymmetrical and symmetrical vibrational modes in CH 2 groups, respectively. The absorption band at 1696 cm −1 was associated with the hydrogen‐bonded carbonyl group, while the peak at 1727 cm −1 was related to the free urethane carbonyl (CO) groups.…”

Section: Resultsmentioning

confidence: 99%

“…A possible explanation is that the addition of unfunctionalized BT promotes polymer‐polymer interaction and free volume reduction, thus initiating more intimate contact between the TPU macromolecules and resulting in restricted chain mobility. [ 16 ] In TPU/BT f /MWCNT f composite films, the T g1 values were almost constant with the increased content of functionalized BT, but significantly lower when compared to the T g1 values relevant for TPU/BT systems. Additionally, a slight decrease in the second T g2 values could be noted with the increase in BT loadings.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Particle Functionalization on Structural and Dielectric Properties of Flexible TPU/BaTiO₃/MWCNTs Composite Films

Stojchevska

Popeski-Dimovski

Kokolanski

et al. 2023

Macro Chemistry & Physics

View full text Add to dashboard Cite

Flexible, low-cost thermoplastic polyurethane (TPU) composite films with functionalized BaTiO 3 (BT) and multiwall carbon nanotubes (MWCNTs) are prepared by solution casting and tested as dielectric materials. Different volume content loadings of BT filler (between 10 and 80 vol%) and 0.12 vol% of MWCNTs are applied. The effects of particle functionalization and BT content on the structural, mechanical, and energy storage properties are studied by Fourier infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), as well as puncture and dielectric measurements. It is found that the particle functionalization and BT content significantly affect the hydrogen bonding within the polymer matrix, and have a huge impact on the mechanical and dielectric properties. The optimal concentration (30 vol% of functionalized BT and 0.12 vol% of functionalized MWCNTs) giving the highest dielectric constant of 30.28 and dielectric breakdown strength of 42 kV mm −1 is determined.

show abstract

Optical and Structural Properties of Composites Based on Poly(urethane) and TiO2 Nanowires

et al. 2023

View full text Add to dashboard Cite

This article’s objective is the synthesis of new composites based on thermoplastic polyurethane (TPU) and TiO2 nanowires (NWs) as free-standing films, highlighting their structural and optical properties. The free-standing TPU–TiO2 NW films were prepared by a wet chemical method accompanied by a thermal treatment at 100 °C for 1 h, followed by air-drying for 2 h. X-ray diffraction (XRD) studies indicated that the starting commercial TiO2 NW sample contains TiO2 tetragonal anatase (A), cubic Ti0.91O (C), and orthorhombic Ti2O3 (OR), as well as monoclinic H2Ti3O7 (M). In the presence of TPU, an increase in the ratio between the intensities of the diffraction peaks at 43.4° and 48° belonging to the C and A phases of titanium dioxide, respectively, is reported. The increase in the intensity of the peak at 43.4° is explained to be a consequence of the interaction of TiO2 NWs with PTU, which occurs when the formation of suboxides takes place. The variation in the ratio of the absorbance of the IR bands peaked at 765–771 cm−1 and 3304–3315 cm−1 from 4.68 to 4.21 and 3.83 for TPU and the TPU–TiO2 NW composites, respectively, with TiO2 NW concentration equal to 2 wt.% and 17 wt.%, indicated a decrease in the higher-order aggregates of TPU with a simultaneous increase in the hydrogen bonds established between the amide groups of TPU and the oxygen atoms of TiO2 NWs. The decrease in the ratio of the intensity of the Raman lines peaked at 658 cm−1 and 635 cm−1, which were assigned to the vibrational modes Eg in TiO2 A and Eg in H2Ti3O7 (ITiO2-A/IH2Ti3O7), respectively, from 3.45 in TiO2 NWs to 0.94–0.96 in the TPU–TiO2 NW composites, which indicates that the adsorption of TPU onto TiO2 NWs involves an exchange reaction of TPU in the presence of TiO2 NWs, followed by the formation of new hydrogen bonds between the -NH- of the amide group and the oxygen atoms of TixO2x-mn, Ti2O3, and Ti0.91O. Photoluminescence (PL) studies highlighted a gradual decrease in the intensity of the TPU emission band, which is situated in the spectral range 380–650 nm, in the presence of TiO2 NW. After increasing the TiO2 NW concentration in the TPU–TiO2 NW composite mass from 0 wt.% to 2 wt.% and 17 wt.%, respectively, a change in the binding angle of the TPU onto the TiO2 NW surface from 12.6° to 32° and 45.9°, respectively, took place.

show abstract

Effect of Barium Titanate on the Thermal, Morphology, Surface, and Mechanical Properties of the Thermoplastic Polyurethane/Barium Titanate Composites

Cited by 3 publications

References 15 publications

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

Effect of Particle Functionalization on Structural and Dielectric Properties of Flexible TPU/BaTiO₃/MWCNTs Composite Films

Optical and Structural Properties of Composites Based on Poly(urethane) and TiO2 Nanowires

Contact Info

Product

Resources

About

Effect of Barium Titanate on the Thermal, Morphology, Surface, and Mechanical Properties of the Thermoplastic Polyurethane/Barium Titanate Composites

Cited by 3 publications

References 15 publications

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

Effect of Particle Functionalization on Structural and Dielectric Properties of Flexible TPU/BaTiO3/MWCNTs Composite Films

Optical and Structural Properties of Composites Based on Poly(urethane) and TiO2 Nanowires

Contact Info

Product

Resources

About

Effect of Particle Functionalization on Structural and Dielectric Properties of Flexible TPU/BaTiO₃/MWCNTs Composite Films