MWCNT nanocomposite films prepared using different ratios of PVC/PCL: Combined FT-IR/DFT, thermal and shape memory properties

Kök, Mediha; Pekdemir, Mustafa Ersin; Öner, Ecem; Coşkun, Meltem; Hekim, Seda

doi:10.1016/j.molstruc.2023.134989

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…While it is known that the T g temperature is the most important feature in the shape memory feature of polymers, the shape memory effect is observed when the T g temperature is exceeded. It has also been stated in previous studies that the shape memory effect involves various physical and chemical interactions (cross‐linking) 52,59,60 . In the study, we can say that after adding C. gallina to PLA/PEG blend, which is known to have a shape memory effect, this feature was further improved.…”

Section: Resultssupporting

confidence: 53%

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Valorization of bio‐calcium carbonate based Chamelea gallina shell waste fillers in shape memory polymer composites

Selçuk Pekdemir,

Onay,

Özen Öner

et al. 2024

J of Applied Polymer Sci

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In recent years, the focus has been on the use of calcium carbonate‐based seashell wastes in the production of new thermoplastic and thermoset polymer materials, paving the way for their use as biofillers in polymeric composites. In this study, it is aimed to obtain a new polymeric composite material by doping Chamelea gallina shells, on polylactic acid (PLA)/polyethylene glycol (PEG) blend. Structural characterization of the obtained PLA/PEG blend/C. gallina composite films was performed with attenuated total reflection infrared spectroscopy (ATR‐IR). When the thermal properties of composite materials were examined by thermogravimetric analysis (TGA), it was determined that the thermal stability of polymeric composites increased with the addition of C. gallina. SEM images showed that the polymer blend films, which appeared to have a porous structure, filled the pores with increasing C. gallina ratio. It was observed that the biodegradability of PLA/PEG blend composite films decreased with increasing C. gallina shells addition. However, C. gallina had a positive effect on the swelling and water absorption capacities of polymeric composites. The increase in tensile strength and elongation at break values of PLA/PEG blend/C. gallina composite films with increasing C. gallina means that the mechanical properties of the polymer are improved.

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Section: Resultssupporting

confidence: 53%

“…It has also been stated in previous studies that the shape memory effect involves various physical and chemical interactions (cross-linking). 52,59,60 In the study, we can say that after adding C. gallina to PLA/PEG blend, which is known to have a shape memory effect, this feature was further improved.…”

Section: Shape Memory Resultsmentioning

confidence: 94%

Valorization of bio‐calcium carbonate based Chamelea gallina shell waste fillers in shape memory polymer composites

Selçuk Pekdemir,

Onay,

Özen Öner

et al. 2024

J of Applied Polymer Sci

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“…The characteristic absorption bands in the range of 1050-1150 cm − 1 are designated for the C-C stretching bond of the PVC chain. The various absorption bands located at the range of 620-660 cm − 1 correspond to the stretching of C-Cl bonds [49].…”

Section: Ftir Spectral Data Of Ligand Metal Complexes and Compounded Pvcmentioning

confidence: 99%

The inhibition performance of a novel iron (III), copper (II), and nickel (II) complexes with Schiff base ligand derived from salicylaldehyde and p–phenylene diamine on Polyvinyl chloride photodegradation

Mohamed

Negm

Youssef

et al. 2023

Preprint

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The stabilization of polyvinyl chloride polymer has a great concern for researchers due to its high instability in the environmental conditions of heat and ultraviolet arrays. Herein, three metal complexes of Schiff base ligand were prepared and their chemical structures were confirmed using elemental analysis, FTIR, 1H-NMR, and UV/Vis spectra. The prepared metal complexes were incorporated in PVC as photo-stabilizers. Only 0.5% by weight of these prepared Schiff bases metal complexes was blended with the PVC polymer to form films with a width of (50 µm). The prepared samples were exposed to ultraviolet irradiation time was varied ranging from 0 to 300 h and the impact of irradiation scheduled upon the PVC stabilization was examined each 50 h. The degree of degradation of PVC in the presence and absence of the different stabilizers was determined using various techniques, including the degree of oxygenated compounds formed, degree of unsaturation, viscosity, and degree of deterioration. The results showed that in the native PVC, the degradation progressively increased over time at the conditions of the experiments. The addition of the stabilizers decreased the degradation considerably. The formation of carbonyl, hydroxyl, and unsaturated intermediates was decreased in the presence of Cu-L, and Ni-L. While Fe-L stabilizer showed weak efficiency. The reasons for the stabilization and the mechanism of the degradation/stabilization processes were discussed based on the electronegativity of the metal ions and the antioxidant activities of the different metal complexes.

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Novel Biopolymer-Based Sustainable Composites for Food Packaging Applications

Markam,

Chouksey,

Bajpai

2024

Handbook of Nanofillers

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MWCNT nanocomposite films prepared using different ratios of PVC/PCL: Combined FT-IR/DFT, thermal and shape memory properties

Cited by 9 publications

References 39 publications

Valorization of bio‐calcium carbonate based Chamelea gallina shell waste fillers in shape memory polymer composites

Valorization of bio‐calcium carbonate based Chamelea gallina shell waste fillers in shape memory polymer composites

The inhibition performance of a novel iron (III), copper (II), and nickel (II) complexes with Schiff base ligand derived from salicylaldehyde and p–phenylene diamine on Polyvinyl chloride photodegradation

Novel Biopolymer-Based Sustainable Composites for Food Packaging Applications

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