Study on mechanical &amp; thermal properties of PCL blended graphene biocomposites

Kumar, Dinesh; Babu, Ganesh; Krishnan, Sai

doi:10.1590/0104-1428.05318

Cited by 25 publications

(5 citation statements)

References 33 publications

(33 reference statements)

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“…Regarding the crystallization temperature (T c ), the value found for pure PCL was around 29.1 • C, as also verified in the literature [29,46]. The addition of 1 to 5 % of kaolin waste (KW) promoted a shift of the curves to higher crystallization temperature, in the range of 33.4 • C to 34.6 • C. In view of this, kaolin waste (KW) has the potential to accelerate the crystallization process of PCL, since PCL/KW composites started to solidify at higher temperature.…”

Section: Resultssupporting

confidence: 80%

“…Table 3 presents the neat PCL and the composites melting parameters, crystallization and the degree of crystallinity. The crystalline melting temperature (T m ) of PCL was approximately 59.9 literature [46,47]. The composites PCL/KW and PCL/HTKW, regardless of the filler content, did not significantly change the Tm compared to neat PCL, there was only a maintenance of the values.…”

Section: Resultsmentioning

confidence: 98%

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Effect of kaolin waste annealing on the structural and thermal behavior of poly(ε−caprolactone)

Filho

Luna

Silva

et al. 2022

Momento

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The heat treatment effect on kaolin waste from mining was evaluated on the structural and thermal behavior of poly(ε-caprolactone) (PCL). The PCL/KW (kaolin waste) and PCL/HTKW (heat-treated kaolin waste) composites were processed in an internal mixer and subsequently characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The kaolin waste showed kaolinite and quartz in its composition, while the heat treatment at 1200°C modified it to mullite, quartz and silica-rich amorphous phase. By XRD, there was an increase in the intensity of the peak 2θ = 23.9° of the PCL/KW composites compared to neat PCL. In contrast, PCL/HTKW composites tended to reduce the intensity of the peak 2θ = 23.9°, especially at 5% HTKW. The crystalline melting temperature and the degree of crystallinity of PCL/KW and PCL/HTKW composites were practically unchanged, compared to PCL. However, the crystallization process was more effective with the kaolin waste (KW) without heat treatment, indicating that the HTKW amorphous phase inhibited crystallization. The PCL/KW development promoted an increase in crystallization temperature, relative crystallinity, and crystallization rate, surpassing PCL and the PCL/HTKW system. In view of this, kaolin waste has the potential to accelerate the PCL crystallization process, contributing to add value to a material that would otherwise be discarded and minimizing environmental impacts.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 98%

Effect of kaolin waste annealing on the structural and thermal behavior of poly(ε−caprolactone)

Filho

Luna

Silva

et al. 2022

Momento

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“…The TGA curve of the electrospun pure PCL shows stability up to 350 °C. The total thermal decomposition of the investigated samples occurred at a temperature of 450 °C [ 63 , 64 ]. The mass loss of electrospun DSS-loaded PCL mats occurs in two steps.…”

Section: Discussionmentioning

confidence: 99%

The Drug-Loaded Electrospun Poly(ε-Caprolactone) Mats for Therapeutic Application

et al. 2021

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Diclofenac sodium salt (DSS)-loaded electrospun nanofiber mats on the base of poly(ε-caprolactone) (PCL) were investigated as biocompatible nanofibrous mats for medical applications with the ability to inhibit bacterial infections. The paper presents the characteristics of fibrous mats made by electrospinning and determines the effect of medicament on the fiber morphology, chemical, mechanical and thermal properties, as well as wettability. PCL and DSS-loaded PCL nanofibrous mats were characterized using scanning electron microscopy, transmission electron microscopy, attenuated total reflectance-Fourier transform infrared spectrometry, dynamic mechanical analysis, and contact angle measurements. Electron paramagnetic resonance measurements confirmed the lifetime of DSS before and after application of high voltage during the electrospinning process. In vitro biocompatibility was studied, and it was proved to be of good viability with ~92% of the diploid human cells culture line composed of lung fibroblast (MRC 5) after 48 h of incubation. Moreover, the significant activity of DSS-loaded nanofibers against cancer cells, Ca Ski and HeLa, was established as well. It was shown that 12.5% (m/V) is the minimal concentration for antibacterial activity when more than 99% of Escherichia coli (Gram-negative) and 99% of Staphylococcus aureus (Gram-positive) have been exterminated.

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“…Only a small portion of graphene could significantly contribute to enhancing the functional and morphological properties of BCs. It was also noted that only an addition of 0.5 wt % of chemically converted graphene (CCG) could enhance the Young's modulus by 170% and tensile strength by 70% [158]. In another study, a lighter weight NBC was reported to have increased mechanical, morphological, and thermal characteristics, and could be applied in automotive, building, and aeronautical sectors through incorporating graphene nanoparticles with biofibers (Hibiscus cannabinus) [159].…”

Section: Graphene-based Nbcmentioning

confidence: 99%

Potential Natural Fiber Polymeric Nanobiocomposites: A Review

2020

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Composite materials reinforced with biofibers and nanomaterials are becoming considerably popular, especially for their light weight, strength, exceptional stiffness, flexural rigidity, damping property, longevity, corrosion, biodegradability, antibacterial, and fire-resistant properties. Beside the traditional thermoplastic and thermosetting polymers, nanoparticles are also receiving attention in terms of their potential to improve the functionality and mechanical performances of biocomposites. These remarkable characteristics have made nanobiocomposite materials convenient to apply in aerospace, mechanical, construction, automotive, marine, medical, packaging, and furniture industries, through providing environmental sustainability. Nanoparticles (TiO2, carbon nanotube, rGO, ZnO, and SiO2) are easily compatible with other ingredients (matrix polymer and biofibers) and can thus form nanobiocomposites. Nanobiocomposites are exhibiting a higher market volume with the expansion of new technology and green approaches for utilizing biofibers. The performances of nanobiocomposites depend on the manufacturing processes, types of biofibers used, and the matrix polymer (resin). An overview of different natural fibers (vegetable/plants), nanomaterials, biocomposites, nanobiocomposites, and manufacturing methods are discussed in the context of potential application in this review.

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Study on mechanical & thermal properties of PCL blended graphene biocomposites

Cited by 25 publications

References 33 publications

Effect of kaolin waste annealing on the structural and thermal behavior of poly(ε−caprolactone)

Effect of kaolin waste annealing on the structural and thermal behavior of poly(ε−caprolactone)

The Drug-Loaded Electrospun Poly(ε-Caprolactone) Mats for Therapeutic Application

Potential Natural Fiber Polymeric Nanobiocomposites: A Review

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