Structure and Mechanical Properties of High-Density Polyethylene Composites Reinforced with Glassy Carbon

Olesik, Piotr; Godzierz, Marcin; Kozioł, M.; Jała, Jakub; Szeluga, Urszula; Myalski, J.

doi:10.3390/ma14144024

Cited by 21 publications

(13 citation statements)

References 37 publications

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“…The degree of crystallinity (DC) was calculated according to: DC = (ΔH f /ΔH f *) × 100%, where ΔH f is the actual heat of fusion of the HDPE sample tested, obtained by measuring the area under its thermogram peak; ΔH f * is equal to 293 J/g, corresponding to the heat of fusion of perfectly crystalline HDPE [ 45 , 46 ]. The pure HDPE, blue HDPE, and orange HDPE had a degree of crystallinity of 85.2%, 85.1%, and 75.5%, respectively.…”

Section: Resultsmentioning

confidence: 99%

Pretreatment of Plastic Waste: Removal of Colorants from HDPE Using Biosolvents

et al. 2021

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Plastics recycling remains a challenge due to the relatively low quality of the recycled material, since most of the developed recycling processes cannot deal with the additives present in the plastic matrix, so the recycled products end up in lower-grade applications. The application of volatile organic solvents for additives removal is the preferred choice. In this study, pretreatment of plastic packaging waste to remove additives using biosolvents was investigated. The plastic waste used was high-density polyethylene (HDPE) with blue and orange colorants (pigment and/or dye). The first step was to identify the type of colorants present in the HDPE, and we found that both plastics presented only one colorant that was actually a pigment. Then, limonene, a renewable solvent, was used to solubilize HDPE. After HDPE dissolution, a wide range of alcohols (mono-, di-, and tri-alcohols) was evaluated as antisolvents in order to selectively precipitate the polymer and maximize its purity. The use of limonene as solvent for plastic dissolution, in combination with poly-alcohols with an intermediate alkyl chain length and a large number of hydroxyl (OH) groups, was found to work best as an antisolvent (1,2,3-propanetriol and 1,2,4-butanetriol), leading to a removal of up to 94% and 100% of the blue and orange pigments, respectively. Finally, three cycles of extraction were carried out, proving the capability of the solvent and antisolvent to be recovered and reused, ensuring the economic viability and sustainability of the process. This pretreatment provides a secondary source of raw materials and revenue for the recycling process, which may lead to an increase in the quality of recycled polymers, contributing to the development of an economical and sustainable recycling process.

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Section: Resultsmentioning

confidence: 99%

Pretreatment of Plastic Waste: Removal of Colorants from HDPE Using Biosolvents

et al. 2021

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“…Identification of fitting phases was performed using DIFFRAC.EVA program with ICDD PDF#2 database. Crystallinity was calculated using the peak decomposition method 47,48 …”

Section: Methodsmentioning

confidence: 99%

“…PBS in all containers was exchanged regularly. After the specified time (1,6,24,48,72,168, and 240 h), all the micellar solutions remaining in the dialysis tube were collected and lyophilized. The samples were suspended in 1 mL of ethanol and analyzed using HPLC.…”

Section: Drug Release Studymentioning

confidence: 99%

Comparison of PLLA‐PEG and PDLLA‐PEG micelles for co‐encapsulation of docetaxel and resveratrol

Jurczyk,

Musiał‐Kulik,

Foryś

et al. 2023

J Biomed Mater Res

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The interest in combining chemosensitizers with cytostatics in cancer therapy is growing, which causes also a need to develop their delivery systems. Example of the combination with beneficial therapeutic effects is docetaxel (Dtx) and resveratrol (Res). Although poly(lactide)‐co‐poly(ethylene glycol) (PLA–PEG) micelles have been considered as one of the most promising platforms for drug delivery, their properties may depend on the stereoisomeric form of hydrophobic block. Therefore, the aim of this study was evaluation of the effect of PLA block on co‐encapsulation and release rate of Dtx and Res, which has not been studied so far. This article presents a comparison of single‐ (Dtx or Res) and dual‐drug (Dtx and Res) loaded micelles obtained from poly(l,l‐lactide)‐co‐poly(ethylene glycol) (PLLA‐PEG) and poly(d,l‐lactide)‐co‐poly(ethylene glycol) (PDLLA‐PEG). The analyzes of the micelles have been conducted including morphology, drug(s) encapsulation efficiency, intermolecular interactions, in vitro drug release, and cytotoxicity. Differences in drug loading ability and release profile have been observed between Res and Dtx but also depending on the polymer and number of drugs in micelles (single vs. dual loaded). The PLLA‐PEG micelles have a significantly higher Dtx encapsulation capacity than PDLLA‐PEG micelles. The highest cytotoxicity was shown for Dtx and Res dual‐loaded micelles, regardless of the polymer. The findings may be used for selection of PLA‐based drug delivery systems containing Dtx and Res.

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“…Ra = 0.30 m), which provides the best potential survivability of human osteoblasts, was found in 30 nm Al 2 O 3 reinforced composites. There is evidence that current glass-reinforced PEEK or Ti-6Al-4V manufactured using fast prototyping technology can be utilized to construct implants that can be used in clinical situations [7]. PEEK implants may be improved in cytocompatibility, soft tissue integration, and osseointegration by using TiO 2 nanostructure forms [8].…”

Section: Introductionmentioning

confidence: 99%

Materialistic characterization, thermal properties, and cytocompatibility investigations on acrylic acid-functionalized nSiO2-reinforced PEEK polymeric nanocomposite

Thanigachalam¹,

Subramanian²,

Sugumar

2022

Colloid Polym Sci

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Polyether Ether Ketone (PEEK) is a biocompatible alternative to metallic biomaterials because of its unique properties such as relatively low elastic modulus, high mechanical strength, and biocompatibility. A signi cant issue is that its bioinert feature might lead to implant failure due to poor osseointegration.Therefore, this research aims to develop the nSiO 2 ceramic particles reinforced PEEK (nSiO 2 @PEEK) polymer nanocomposite. The particle size of nanoparticles was measured as 43.6 nm using particle size analyzer (PSA). The fabrication was done by the vertical injection moulding process. The morphology of fabricated composite was analyzed using FESEM. The EDAX and elemental mapping revealed the presence of Si, C, and O elements in nSiO 2 @PEEK. The structural characteristic of nSiO 2 @PEEK nanocomposite was investigated using XRD and FTIR. Thermal stability and melting behavior were examined using TGA thermograms and DSC curves. Minimum toxic level (Grade: slight, 1-20%) was observed by in-vitro cytotoxicity assessment using direct and indirect methods. The excellent cell viability was found as 83.6% through MTT assay. The MG-63 cell-adhesion study was conducted subsequently excellent cell growth and cell-morphology were monitored using SEM analysis. Thereby, the developed nanocomposite was found to be good biocompatible properties through this research. Thus it can be suitable as promising biomaterial for medical implant applications.

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Structure and Mechanical Properties of High-Density Polyethylene Composites Reinforced with Glassy Carbon

Cited by 21 publications

References 37 publications

Pretreatment of Plastic Waste: Removal of Colorants from HDPE Using Biosolvents

Pretreatment of Plastic Waste: Removal of Colorants from HDPE Using Biosolvents

Comparison of PLLA‐PEG and PDLLA‐PEG micelles for co‐encapsulation of docetaxel and resveratrol

Materialistic characterization, thermal properties, and cytocompatibility investigations on acrylic acid-functionalized nSiO2-reinforced PEEK polymeric nanocomposite

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