Enhanced mechanical and thermal performance of multiwalled carbon nanotubes-filled polypropylene/natural rubber thermoplastic elastomers

Nair, Sharika T.; Vijayan, P. Poornima; George, Soney C.; Kalarikkal, Nandakumar; Thomas, Sabu

doi:10.1039/d0nj05437b

Cited by 21 publications

(14 citation statements)

References 57 publications

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“…The wide application of PLA is limited by its low crystallization degree/rate, high brittleness and low thermal resistance (its thermal resistance is limited by its low glass transition (60 • C) [98]). The thermal properties of natural fiber reinforced thermoplastic composites were studied by numerous researchers [41,[99][100][101][102][103][104][105][106].…”

Section: Type Of Matrixmentioning

confidence: 99%

“…Table 2 summarizes several studies which present the stages of decomposition of different natural fiber reinforced composites. 290-380 • C: the cellulose and lignin degradation [149] Several authors used the thermogravimetric analysis to determine the thermal properties of natural fiber composites [52,53,84,85,104,107,128,[150][151][152]. For example, Boopalan et al [153] studied the thermal properties of jute (J)/banana (B) reinforced epoxy composites.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

“…The roselle (25 wt%) + sugar palm (75 wt%) composite showed higher thermal stability when compared to RFT composite. [104] Jute, jute + sisal and jute + curauá…”

Section: Polyurethanementioning

confidence: 99%

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A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

2021

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The thermal stability of natural fiber composites is a relevant aspect to be considered since the processing temperature plays a critical role in the manufacturing process of composites. At higher temperatures, the natural fiber components (cellulose, hemicellulose, and lignin) start to degrade and their major properties (mechanical and thermal) change. Different methods are used in the literature to determine the thermal properties of natural fiber composites as well as to help to understand and determine their suitability for a certain applications (e.g., Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and differential mechanical thermal analysis (DMA)). Weight loss percentage, the degradation temperature, glass transition temperature (Tg), and viscoelastic properties (storage modulus, loss modulus, and the damping factor) are the most common thermal properties determined by these methods. This paper provides an overview of the recent advances made regarding the thermal properties of natural and hybrid fiber composites in thermoset and thermoplastic polymeric matrices. First, the main factors that affect the thermal properties of natural and hybrid fiber composites (fiber and matrix type, the presence of fillers, fiber content and orientation, the treatment of the fibers, and manufacturing process) are briefly presented. Further, the methods used to determine the thermal properties of natural and hybrid composites are discussed. It is concluded that thermal analysis can provide useful information for the development of new materials and the optimization of the selection process of these materials for new applications. It is crucial to ensure that the natural fibers used in the composites can withstand the heat required during the fabrication process and retain their characteristics in service.

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Section: Type Of Matrixmentioning

confidence: 99%

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

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A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

2021

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“…As filler agglomerates tend to form at higher MWCNTs loading, hindering the uniform distribution of stress from filler to the polymer phase to some extent, MWCNTs is not imparting further strengthening or reinforcement effect beyond 9 phr. [ 29 ] The pure rubber blend shows the elongation break of 733.87 ± 10.57. Upon introduction of 3 phr MWCNTs, the elongation break increases to 783.24 ± 13.09 and it remains a similar value until the MWCNTs loading beyond 9 phr.…”

Section: Resultsmentioning

confidence: 99%

Elastic composites fabricating for electromagnetic interference shielding based on MWCNTs and Fe₃O₄ unique distribution in immiscible NR/NBR blends

Zhang

Fan

et al. 2022

Polymer Engineering & Sci

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Electromagnetic interference (EMI) shielding rubber nanocomposites were fabricated via a simple rubber roll milling technique based on the filler distribution behavior in the immiscible natural rubber (NR) and acrylonitrile-butadiene (NBR) (50/50) blends with varying amounts of multiwall carbon nanotubes and Fe 3 O 4 nanoparticles. All nanocomposites showed a co-continuous phase structure, while the distribution behavior of filler was diverse correlated with the filler content and type. The mechanical properties, electrical conductivity, and EMI shielding effectiveness (SE) of rubber composites were characterized. The maximum EMI SE of 29.4 dB at 12.4 GHz was achieved in the rubber composites loaded with 15 phr MWCNTs and 15 phr Fe 3 O 4 nanoparticles. The EMI shielding mechanisms of such materials were also discussed. The observation in this work provided a possible idea to the industrial manufacture electromagnetic interference shielding rubber nanocomposites, and contributed to expanding its application fields with higher mechanical property requirements and flexibility.

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“…In this regard, several factors such as the dispersion state of the nanofiller, the blend morphology induced by nanofiller, the interaction between the blend and filler components and the selective localization of nanofillers at the blend interface can modify the properties of immiscible blend nanocomposite. 28 For example, the addition of CNT showed the occurrence of interfacial adhesion with rPET phase and thus promoted an offset effect on the reaction of rPET and a decrement in the rigidity of the molecular chain in the rPET/thermoplastic polyurethane composites. 29 In another study of hybrid CNT/clay nanofillers on immiscible PE/PP blend, the finding reported the selective localization of CNT within the PE phase, while the clay particles showed affinity towards the PP phase, however due to the poor adhesion between PP matrix and the clay, the mechanical properties were degraded.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and physical characterizations of compatibilizer‐free recycled plastics blend composites modified with carbon nanotube and clay nanofiller

Arman

Chen

Ahmad

et al. 2022

J of Applied Polymer Sci

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Excessive amount of disposable and reusable plastic wastes has increasingly gained a great environmental concern. This present article aims to investigate the individual effect of multiwalled carbon nanotubes (MWCNTs) and clay loadings at 0.5, 1.0, 2.0, 4.0, and 6.0 phr on the tensile, impact, density, and water absorption properties of polymer blend made from recycled high‐density polyethylene and recycled polyethylene terephthalate. Both nanocomposites were melt‐blended using a twin screw extruder before compression molding. For MWCNT nanocomposite, 4 phr showed the optimum tensile strength (14.5 MPa), Young's modulus (587.4 MPa), and strain at break (4.2%) as compared to other loadings. For clay nanocomposite system, the optimum tensile properties (13.9 MPa tensile strength, 525.7 MPa Young's modulus, and 4.7% strain) were achieved at 1 phr. The impact strength of the nanocomposites was reduced with both nanofillers' content. With the increment of MWCNT and clay loadings, the percentages of water uptake increased but the values were still considered low (<0.26% upon 35 days immersion) capacity. These research findings with the effect of nanofiller types and loadings were statistically significant as proven in ANOVA analysis. This study formalizes a chemical‐free environmental strategy to produce nanocomposite as a plastic‐replacement product.

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Enhanced mechanical and thermal performance of multiwalled carbon nanotubes-filled polypropylene/natural rubber thermoplastic elastomers

Abstract: Effect of multiwalled carbon nanotubes (MWCNT) on mechanical, dynamic mechanical and thermal properties of the polypropylene/natural rubber (PP/NR) blends having two different blend composition were studied. The observations were correlated...

Cited by 21 publications

References 57 publications

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

Elastic composites fabricating for electromagnetic interference shielding based on MWCNTs and Fe₃O₄ unique distribution in immiscible NR/NBR blends

Mechanical and physical characterizations of compatibilizer‐free recycled plastics blend composites modified with carbon nanotube and clay nanofiller

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Enhanced mechanical and thermal performance of multiwalled carbon nanotubes-filled polypropylene/natural rubber thermoplastic elastomers

Abstract: Effect of multiwalled carbon nanotubes (MWCNT) on mechanical, dynamic mechanical and thermal properties of the polypropylene/natural rubber (PP/NR) blends having two different blend composition were studied. The observations were correlated...

Cited by 21 publications

References 57 publications

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

Elastic composites fabricating for electromagnetic interference shielding based on MWCNTs and Fe3O4 unique distribution in immiscible NR/NBR blends

Mechanical and physical characterizations of compatibilizer‐free recycled plastics blend composites modified with carbon nanotube and clay nanofiller

Contact Info

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Resources

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Elastic composites fabricating for electromagnetic interference shielding based on MWCNTs and Fe₃O₄ unique distribution in immiscible NR/NBR blends