A study on mechanical properties of PBT nano-composites reinforced with microwave functionalized MWCNTs

Deshpande, Revati; Naik, Garima; Chopra, Swamini; Deshmukh, Kavita A.; Deshmukh, Abhay D.; Peshwe, D. R.

doi:10.1088/1757-899x/346/1/012004

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…The result is a more perfect polymer structure with a higher degree of crystallinity than the original [21]. The authors of work [32] also observed a similar increase in the degree of crystallinity of the polymer matrix for the polybutylene terephthalate-carbon nanotubes system.…”

Section: Discussion Of Results Of Studying the Influence Of The Filler On The Functional Properties Of Polymer Composite Materialsmentioning

confidence: 72%

Determining the effect of dispersed aluminum particles on the functional properties of polymeric composites based on polyvinylidene fluoride

Lysenkov

Klymenko

2021

EEJET

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Polymeric materials that contain inorganic fillers demonstrate a unique set of physical properties due to the combination of matrix elasticity and filler strength. This paper reports determining the effect of dispersed aluminum particles on the properties of polyvinylidene fluoride-based materials. This study result is the fabrication of a series of composite materials using a piston extruder. Their functional characteristics have been explored using the methods of thermophysical and mechanical analysis, dilatometry, and acoustic spectroscopy. It was established that the introduction of dispersed aluminum particles leads to the loosening of the matrix, which may indicate the transition of macro macromolecules from the crystalline phase to the boundary layer around the filler. This feature of structure formation and the uniform distribution of filler particles ensured the improvement of the functional characteristics of the materials obtained. It has been shown that with an increase in the content of filler in the system to 5 % the thermal conductivity increases from 0.17 W/(m·K) to 1.55 W/(m·K). The introduction of the filler leads to an improvement in the heat resistance of the materials obtained, by 17 K. The increase in both melting point and destructiveness is explained by the formation of a more perfect polymer structure with a higher degree of crystallinity. An increase in the speed of ultrasound propagation was identified, by 67 %, as well as in the tensile strength, by 36 %, in the materials obtained, which can be explained by contributions from the filler, which has greater sound conductivity and mechanical strength than the polymer matrix. Such systems show the reinforcing effect of aluminum particles on the polymer matrix, so they could be used as structural materials with improved functional characteristics

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Section: Discussion Of Results Of Studying the Influence Of The Filler On The Functional Properties Of Polymer Composite Materialsmentioning

confidence: 72%

Determining the effect of dispersed aluminum particles on the functional properties of polymeric composites based on polyvinylidene fluoride

Lysenkov

Klymenko

2021

EEJET

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“…[ 13,14 ] Such microwave‐treated fillers are then incorporated into polymer matrix for making composites. [ 15,16 ] Chopra et al [ 14 ] attempted functionalization of multi‐walled carbon nanotubes (MWCNTs) in a solution of sulfuric acid (H 2 SO 4 ) and nitric acid (HNO 3 ) by exposing the mixture to microwave radiations. This process was reported to be time‐saving and more efficient than conventional ultrasonication process.…”

Section: Introductionmentioning

confidence: 99%

“…This process was reported to be time‐saving and more efficient than conventional ultrasonication process. Later, these microwave‐functionalized MWCNTs were reinforced in polyamide (PA)‐6 [ 15 ] and polybutylene terephthalate (PBT) [ 16 ] polymer matrices for improving composites' mechanical strength and tribological performance. However, to the authors' best knowledge, it was observed that the use of microwave energy for the post‐processing treatment of finished polymeric components for enhancing their mechanical and tribological properties has not been explored yet.…”

Section: Introductionmentioning

confidence: 99%

A new approach of microwave treatment to augment the mechanical properties of polymeric materials

Chopra¹,

Pande

Tupe³

et al. 2021

Polymer Engineering & Sci

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The present study portrays a novel post‐processing treatment by using microwave radiations for enhancing mechanical properties of five commonly used engineering polymers, polyamide (PA), polybutylene terephthalate (PBT), polypropylene (PP), polycarbonate (PC), and acrylonitrile‐butadiene‐styrene (ABS). The analysis revealed that the crystal structures of the polymers improved after the treatment due to more favorable rearrangement of crystalline segments within the polymers. Furthermore, tensile properties and tribological performance of microwave‐treated polymers were found to be significantly better when compared to those of untreated counterparts. The tensile strength, elongation, and wear performance of PA increased by 51%, 286%, and 45%, respectively, only after a treatment of 20 s. A similar response was also exhibited by other polymers as well. It was noted that optimum time for microwave treatment can vary depending on different crystalline nature of the polymers. The degree of randomness in the molecular chains of semicrystalline polymers is less; thus, it requires less treatment time. However, for amorphous polymers, as randomness increases, more time is needed. As such, post‐processing microwave treatment of polymers has proven beneficial as a cost‐effective, time‐saving, and environment‐friendly technique for enhancing material properties significantly.

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“…Figure3shows the XRD pattern for the modified BClay (MBClay), neat PBT and PBT/BClay nanocomposites for 2θ varying between 2° and 35°. The characteristic and intense peaks for the neat PBT are observed at 2θ positions of 15.75° and 17.23°, corresponding to the β-crystallite form of PBT, and at 2θ of 20.34°, 21.41°, 23.40°, and 24.96°, corresponding to the α-crystallite form of PBT as shown in Figure3(a)[44,45]. These characteristic crystalline peaks were also observed for the PBT/MBClay with 3.7-4.9 wt% of MBClay loadings.…”

mentioning

confidence: 99%

Influence of Reinforcing Efficiency of Clay on the Mechanical Properties of Poly(butylene terephthalate) Nanocomposite

Colombo¹,

Díaz²,

Kodali³

et al. 2022

Preprint

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In contrast to the traditional fillers, clay, in particular, natural smectite clay represents an environmentally significant alternative to improve the properties of polymers. Compared to con-ventional nanofillers, smectite clay can effectively enhance the physical and mechanical properties of polymer nanocomposites with a relatively small amount of addition (< 5 wt%). The present study focuses on investigating the reinforcing efficiency of different amounts (up to 5 wt%) of a natural Brazilian smectite clay on the mechanical and thermal properties of poly(butylene terephthalate) (PBT) nanocomposites. Natural Brazilian clay modified by addition of quaternary salt and sodium carbonate (MBClay) was infused into the PBT polymer by melt extrusion, using a twin-screw extruder. It was found that the best properties for PBT were obtained at 3.7 wt% of modified BClay. Tensile strength at break exhibited an increase of about 60 %, flexural strength increased by 24 % and flexural modulus increased by 17 %. In addition, an increase in the crystallinity percentage of PBT/BClay nanocomposite was confirmed by DSC and XRD analysis, and a gain of about 45 % in HDT was successfully achieved due to incorporation of 3.7 wt% of MBClay.

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A study on mechanical properties of PBT nano-composites reinforced with microwave functionalized MWCNTs

Cited by 7 publications

References 14 publications

Determining the effect of dispersed aluminum particles on the functional properties of polymeric composites based on polyvinylidene fluoride

Determining the effect of dispersed aluminum particles on the functional properties of polymeric composites based on polyvinylidene fluoride

A new approach of microwave treatment to augment the mechanical properties of polymeric materials

Influence of Reinforcing Efficiency of Clay on the Mechanical Properties of Poly(butylene terephthalate) Nanocomposite

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