Melt crystallization and thermal properties of graphene platelets (GNPs) modified recycled polyethylene terephthalate (RPET) composites: The filler network analysis

Yang, Bin; Chen, Jin; Su, Lifen; Miao, Jibin; Chen, Peng; Qian, Jiasheng; Xia, Ru; Shi, You

doi:10.1016/j.polymertesting.2019.04.016

Cited by 22 publications

(13 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, two-dimensional materials can effectively reduce the mass fraction of fillers in polymer composites and maintain the high performance of materials because it is relatively easy to construct network structures between two-dimensional nanostructures . A graphene nanoplatelet (GNP) was a typical two-dimensional carbon material with a multilayer structure and had similar physical and chemical properties to monolayer graphene, such as excellent dielectric properties, high thermal conductivity, and good electrical conductivity. , The excellent physical and chemical properties as well as the two-dimensional structure make GNP a candidate material with both efficient thermal conductivity and excellent electromagnetic wave absorption.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Yang

Jia

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

In this work, Ni@GNP nanohybrids fabricated via an in situ reduction method were incorporated into polymethyl methacrylate (PMMA) to prepare PMMA/Ni@GNP nanocomposites via solution blending and hot-pressing. The Ni nanoparticles with an average diameter of 70–80 nm were observed to successfully grow on the GNP surface via SEM and TEM. Both thermally conductive and microwave absorbing properties of the prepared composites were intensively investigated. A reflection loss test experimentally suggested that the PMMA/Ni@GNP composites showed a good microwave absorbing property, among which the composite containing 30 wt % Ni@GNP displayed the best microwave absorption performance (with a value of −30 dB for RL min in the C band). The thermal conduction behavior of the composites was jointly studied by infrared thermal imaging (ITI) and enthalpy transformation method together with a four-parameter model. The average heating rate during an initial stage was obviously found to increase from 65.4 to 103.2 °C/min, indicating that a well-defined heat conduction network gradually formed in the composites, which exerted positive influence on heat conduction. The composites generally bore perfect thermal conductivities (e.g., with a maximum in-plane thermal conductivity of 9.02 W/m·K and a maximum out-of-plane value of 1.29 W/m·K), and the variations of thermal conductivity versus filler loading should be attributed to the construction of an anisotropically thermally conductive network in the composites. The PMMA/Ni@GNP composites with desirable microwave absorption and thermal conductivity would find potential applications in 5G communication devices.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Yang

Jia

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…For the PP/carbon composites, the storage modulus improved with the carbon content because of the possible PP/carbon network formation. 52 At lower angular frequency (0.01 rad/s), G 0 of PP was 0.27 Pa, and those of PP with 10 and 20 wt% carbon was 4.06 and 7.25 Pa, respectively. As shown in Figure 6, with the highest carbon loading (20 wt%), there was a twoorder of magnitude increment in the G' matched with pure PP.…”

Section: Thermal Characterization Of Pp/ Carbon Compositesmentioning

confidence: 89%

Utilization of polyethylene terephthalate waste as a carbon filler in polypropylene matrix: Investigation of mechanical, rheological, and thermal properties

Poulose

Elnour

Kumar

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polyethylene terephthalate (PET) waste was converted into carbon and the feasibility of utilizing it as a reinforcing filler material in a polypropylene (PP) matrix was investigated. The carbon produced by the pyrolysis of waste PET at 900°C in nitrogen atmosphere contains high carbon content (>70 wt%). PP/carbon composites were produced by melt blending process at varying loading concentrations. Scanning electron microscopy images at the fractured surface revealed that the carbon filler has better compatibility with the PP matrix. The mechanical, thermal, and rheological properties and surface morphology of the prepared composites were studied. The thermogravimetric analysis studies showed that the thermal stability of the PP/carbon composites was enhanced from 300 to 370°C with 20 wt% of carbon. At lower angular frequency (0.01 rad/s), the storage modulus (G′) of PP was 0.27 Pa and those of PP with 10 and 20 wt% carbon was 4.06 and 7.25 Pa, respectively. Among the PP/carbon composite prepared, PP with 5 wt% carbon showed the highest tensile strength of 38 MPa, greater than that of neat PP (35 MPa). The tensile modulus was enhanced from 0.9 to 1.2 GPa when the carbon content was increased from 0 to 20 wt%.

show abstract

“…However, other types of fillers in the rPET matrix have also been studied in the literature. Graphene nanoplatelets (GNP), employed as reinforcing fillers in the rPET matrix, improved the crystallinity of rPET by their nucleating effects, but without modifying its crystalline structure [356]. The stability and storage moduli of rPET increased with increasing GNP content and its damping behaviour was improved at low temperatures.…”

Section: Production Of Composites From Rpet And/or Rpomentioning

confidence: 99%

Polyolefins and Polyethylene Terephthalate Package Wastes: Recycling and Use in Composites

et al. 2021

View full text Add to dashboard Cite

Plastics are versatile materials used in a variety of sectors that have seen a rapid increase in their global production. Millions of tonnes of plastic wastes are generated each year, which puts pressure on plastic waste management methods to prevent their accumulation within the environment. Recycling is an attractive disposal method and aids the initiative of a circular plastic economy, but recycling still has challenges to overcome. This review starts with an overview of the current European recycling strategies for solid plastic waste and the challenges faced. Emphasis lies on the recycling of polyolefins (POs) and polyethylene terephthalate (PET) which are found in plastic packaging, as packaging contributes a signification proportion to solid plastic wastes. Both sections, the recycling of POs and PET, discuss the sources of wastes, chemical and mechanical recycling, effects of recycling on the material properties, strategies to improve the performance of recycled POs and PET, and finally the applications of recycled POs and PET. The review concludes with a discussion of the future potential and opportunities of recycled POs and PET.

show abstract

Melt crystallization and thermal properties of graphene platelets (GNPs) modified recycled polyethylene terephthalate (RPET) composites: The filler network analysis

Cited by 22 publications

References 55 publications

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Enhanced Thermally Conductive and Microwave Absorbing Properties of Polymethyl Methacrylate/Ni@GNP Nanocomposites

Utilization of polyethylene terephthalate waste as a carbon filler in polypropylene matrix: Investigation of mechanical, rheological, and thermal properties

Polyolefins and Polyethylene Terephthalate Package Wastes: Recycling and Use in Composites

Contact Info

Product

Resources

About