Preparation and characterization of polyethylene terephthalate–chamomile oil blends with enhanced hydrophilicity and anticoagulant properties

Fadel, Maie A; Kamel, Nagwa A.; Darwish, M.; El-Messieh, Salwa L Abd; Abd‐El‐Nour, K. N.; Khalil, Wafaa A.

doi:10.1007/s40204-020-00133-4

Cited by 11 publications

(3 citation statements)

References 17 publications

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“…As seen in Table1, the contact angle of blank polystyrene was about 87°±1 which is comparable with that previously reported [20].The contact angle for PS-CLO films decreased by increasing the oil content which means increased wettability of the PS. Similar trend observed for other polymers after addition of essential oils [21][22][23]. This decreasing may be due to introducing polar groups to the surfaceof the films which confirmed by the FTIR measurements.…”

Section: Contact Anglesupporting

confidence: 83%

A study of the biophysical properties of polystyrene films incorporated with clove oil as bio-based plasticizer.

et al. 2021

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Polystyrene based films loaded with different concentrations of clove oil (0, 10, 20, 30 and 40 wt.%) were prepared using solution casting technique. The properties of the novel composites are characterized using dielectric spectroscopy (DS), attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscope (SEM), X-ray diffraction (XRD),UV absorption spectra, contact angle measurements, mechanical analysis, in addition to test the antibacterial effect of the composites against two strains of microorganisms: Escherichia coli(gram-negative bacteria) and Staphylococcus aureus (gram-positive bacteria). According to dielectric study, by increasing the CLO content both The permittivity ', dielectric loss " and the electrical conductivity  increases. The contact angle measurements indicate that, the PS-CLO films demonstrate hydrophilic behavior compared to the pure PS. Tensile strength R values decreased by increasing CLO content and elongation at break R values were found to be increased. The increase in R may be due to the softening effect of CLO. The incorporation of the clove oil improved the light transmittance of the films. PS-CLO 40% sample have antibacterial activity against both E. coli and S. aureus.

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Section: Contact Anglesupporting

confidence: 83%

A study of the biophysical properties of polystyrene films incorporated with clove oil as bio-based plasticizer.

et al. 2021

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“…To further explain the effect of both substrates on the PO observed in the pastilles, the contact angle (°) of each substrate was examined. The contact angles for PET and soda-lime glass are 78.9° and 10–20°, respectively. The similarity of ACM’s hydrophilicity to that of PET implies that ACM is likely to interact more favorably with PET at the polymer-melt interface than the glass-melt interface…”

Section: Resultsmentioning

confidence: 99%

Role of Heteronucleants in Melt Crystallization of Crystalline Solid Dispersions

Burgos

Espinell

Graciani-Massa

et al. 2022

Crystal Growth & Design

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Few publications exist concerning polymorphic control during melt crystallization, particularly when employing heteronucleants.Here, the influence of a polymeric thin film (polyethylene terephthalate, PET) on the crystallization from melt of the polymorphic compound acetaminophen (ACM) in polyethylene glycol (PEG) was investigated. Molten ACM−PEG at different compositions was monitored using in situ Raman spectroscopy for nucleation induction time measurements and phase identification. Furthermore, X-ray diffraction (XRD) served to analyze the preferred orientation (PO) of the pastilles (solidified melt droplets) on PETcoated and uncoated substrates. The results indicate that PET-coated substrates qualitatively accelerate the nucleation of ACM form II (ACM II) in PEG compared to uncoated glass substrates. Additionally, the occurrence of ACM II in PEG was increased by an average of 10% when crystallized on PET-coated substrates compared to uncoated substrates. Overall, these results suggest that ACM can interact through hydrogen bonding with the PET-coated substrate, leading to faster nucleation. This investigation illustrates the effect of PET-coated substrates in the selective crystallization of ACM II in PEG as crystalline solid dispersions (CSDs). Ultimately, the results suggest the implementation of polymeric heteronucleants in melt crystallization processes, specifically, in advanced polymerbased formulation processes for the enhanced polymorphic form control of pharmaceutical compounds in CSDs.

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“… 38 The modification of PET by ethylene glycol revealed the presence of a new functional group, particularly the hydroxyl group observed at 3439 cm –1 . 39 The addition of 1,2-diaminopropane to PET-A results in a significant shift from 1714 to 1632 cm –1 in the stretching vibration of C=O peak in PET-B. 38 , 40 This shift can be attributed to the introduction of the amine group in PET-B, which forms a hydrogen bond with the carbonyl group of PET-A.…”

Section: Resultsmentioning

confidence: 99%

Anion Exchange Membranes Based on Chemical Modification of Recycled PET Bottles

Donnakatte Neelalochana,

Tomasino,

Di Maggio

et al. 2023

ACS Appl. Polym. Mater.

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This study presents an innovative and effective solution for recycling PET bottles as raw for producing anion exchange membranes (AEMs) for electrochemical applications. This approach reduces the demand for pristine materials, a key principle of the circular economy and sustainability. PET was subjected to chemical modification by introducing cationic functional groups followed by methylation and OH– exchange process. The amination synthesis was optimized based on reaction time. The results indicate that ion exchange capacity, water uptake, and swelling ratio properties mainly depend on the degree of cationic functionalization. The optimized AEM exhibits ionic conductivity of 5.3 × 10–2 S·cm–1 and alkaline stability of 432 h in 1 M KOH at 80 °C. The membrane properties before and after the alkaline treatment were investigated using Fourier-transform infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy analysis. Computational chemistry analysis was employed to gain further insights into the membrane degradation mechanisms and pathways under alkaline conditions. This research and its findings are a step toward using recycled materials in the field of AEM technology.

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Preparation and characterization of polyethylene terephthalate–chamomile oil blends with enhanced hydrophilicity and anticoagulant properties

Cited by 11 publications

References 17 publications

A study of the biophysical properties of polystyrene films incorporated with clove oil as bio-based plasticizer.

A study of the biophysical properties of polystyrene films incorporated with clove oil as bio-based plasticizer.

Role of Heteronucleants in Melt Crystallization of Crystalline Solid Dispersions

Anion Exchange Membranes Based on Chemical Modification of Recycled PET Bottles

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