Microwave Processing of Polymer Matrix Composites: Review of the Understanding and Future Opportunities

Naik, Tejas Pramod; Rana, Ram Singh; Singh, Inderdeep; Sharma, Apurbba Kumar

doi:10.1007/978-981-15-7711-6_52

Cited by 5 publications

(5 citation statements)

References 54 publications

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“…Wang et al [30] demonstrated that microwave heating improved the mechanical properties of 3D-printed SiC-coated PLA composite parts in terms of tensile strength, Young's modulus, and interlayer stress at break. Complementary works have previously demonstrated that microwave post-treatment improves the mechanical properties of polymer matrix-based composites [31,32]. In addition, a study by Löbmann and colleagues [33] found that both convection and microwave-induced radiation play a crucial role in promoting in situ drug amorphization, which can influence their bioavailability and clinical effectiveness.…”

Section: Introductionmentioning

confidence: 93%

“…Previous studies have demonstrated that microwave-based post-treatment of polymer matrix-based composites enhanced tensile strength and minimized defects compared with air oven drying [31,32]. Moreover, microwave oven drying is more efficient in terms of time and energy, making it a promising option to hasten printability after HME [32].…”

Section: Mechanical Studiesmentioning

confidence: 99%

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Exploring Environmental Settings to Improve the Printability of Paroxetine-Loaded Filaments by Fused Deposition Modelling

Figueiredo,

Fernandes,

Carvalho

et al. 2023

Pharmaceutics

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The successful integration of hot-melt extrusion (HME) and fused deposition modelling (FDM) depends on a better understanding of the impact of environmental conditions on the printability of formulations, since they significantly affect the properties of the raw materials, whose control is crucial to enable three-dimensional printing (3DP). Hence, the objective of this work was to investigate the correlation between the environmental settings and the properties of paroxetine (PRX)-loaded filaments, previously produced by HME, which affect printability by FDM. The influence of different drying methods of the physical mixtures (PMs) and HME-filaments (FILs) on the quality and printability of these products was also assessed. The printability of FILs was evaluated in terms of the water content, and the mechanical and thermal properties of the products. Stability studies and physicochemical, thermal, and in vitro dissolution tests were carried out on the 3D-printed tablets. Stability studies demonstrated the high ductility of the PRX loaded FILs, especially under high humidity conditions. Under low humidity storage conditions (11% RH), the FILs became stiffer and were successfully used to feed the FDM printer. Water removal was slow when carried out passively in a controlled atmosphere (desiccator) or accelerated by using active drying methods (heat or microwave). Pre-drying of the PRX/excipients and/or PMs did not show any positive effect on the printability of the FIL. On the contrary, dry heat and, preferably, microwave mediated drying processes were shown to reduce the holding time required for successful FDM printing, enabling on-demand production at the point of care.

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Section: Introductionmentioning

confidence: 93%

Section: Mechanical Studiesmentioning

confidence: 99%

Exploring Environmental Settings to Improve the Printability of Paroxetine-Loaded Filaments by Fused Deposition Modelling

Figueiredo,

Fernandes,

Carvalho

et al. 2023

Pharmaceutics

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“…17,18 Microwave energy play an essential role in the present scenario of polymer processing due to its unique characteristics, such as volumetric heating, uniform heating, less thermal gradient in product, better quality of product, less-skilled operator required, selective heating, environment-friendly process, energy and time efficient, and low equipment cost. [19][20][21] Microwaves heat the target material by transferring direct energy via dielectric heating on a volumetric scale. 22,23 Researchers have earlier investigated microwave heating for joining, casting, cladding, processing of thermoset-based polymer composites, and isolation of nanocellulose from agricultural waste.…”

Section: Introductionmentioning

confidence: 99%

“…In thermoplastic based NFRCs, polyethylene (PE) is a leading matrix material due to its lightweight, low cost, and easy processing 17,18 . Microwave energy play an essential role in the present scenario of polymer processing due to its unique characteristics, such as volumetric heating, uniform heating, less thermal gradient in product, better quality of product, less‐skilled operator required, selective heating, environment‐friendly process, energy and time efficient, and low equipment cost 19–21 . Microwaves heat the target material by transferring direct energy via dielectric heating on a volumetric scale 22,23 .…”

Section: Introductionmentioning

confidence: 99%

Microwave‐assisted molding of sisal/HDPEcomposites: Water absorption, diffusion kinetics and tribological behavior

et al. 2023

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Recyclability and environmental safety have prompted research toward clean and energy‐efficient manufacturing technologies for natural fiber‐reinforced composites. In the current investigation sisal/HDPE composites were fabricated using a novel energy and time efficient microwave‐assisted molding (MAM) method. Sisal fibers were successfully treated with novel microwave‐assisted alkali treatment (MAAT) at 640 W microwave power. For the outdoor application the effect of treatment method on mechanical properties, water absorption, and tribological behavior of the developed composites were studied. The treated composites have been found to absorb less water by 45.28% as compared to untreated (UT). The developed composites recorded increase in tensile strength (36.5%), flexural strength (41.05%), and hardness (4.38%) as compared to UT composites, which could be attributed to effective partial removal of non‐cellulosic content after treatment from fiber surface. During the wear test, sisal/HDPE composite was employed as a pin, and the abrasive paper (P1000) served as a counter surface in the pin‐on‐disc (POD) arrangement for two‐body abrasive wear. The SWR, COF, and friction force values of the treated composites reduced by about 61.72%, 33.33%, and 34%, respectively, as compared to those for the UT composites at minimum normal load (10 N) and sliding speed (0.5 m/s) which was due to positive effect of MAAT. Scanning electron microscope was used to examine the worn surface of composites to understand the mode of wear mechanism.Highlights Novel microwave‐assisted alkali treatment (MAAT) was used for treatment of fibers. MAAT increased the fiber roughness. Microwave‐assisted molding was used for fabrication of composites. The water absorption behavior followed the Pseudo Fickian diffusion mechanism. Polymeric composites with MAAT fiber had optimum performance.

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“…Microwave radiation has been accepted as a heating source because of several advantages it offers [2]. Microwave processing has benefits, including less energy consumption, volumetric heating, and better mechanical properties [3].…”

Section: Introductionmentioning

confidence: 99%

Identification of microwave heating system with symmetrical octagonal tube cavity using ARX model

Prastiyanto

Apriaskar

Handayani

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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As one of the complex technologies in the heating process, microwave heating system has gained attentions in the recent years. A further development of microwave heating control technology becomes necessary considering its superiorities in less energy consumption, volumetric heating ability and satisfying mechanical properties. Several studies on microwave heating system modelling were conducted to encourage the controller design. This work presents the modelling of a microwave heating system using autoregressive with exogenous variables or so-called ARX. The modelling conducted in this research applied the approach of input-output identification method. The generation of input-output datasets for the identification of microwave heating system was carried out in COMSOL simulation environment using symmetrical octagonal tube cavity design with two magnetrons as the inputs and five temperature sensors as the output measurement devices. For the validation and evaluation of the approach, MATLAB identification system toolbox was utilized to find the best ARX model based on the given input-output datasets. The validation test shows that the best ARX model can reach more than 93% in the fit value given all the datasets for all the outputs, while for the evaluation using the perturbed signals from the outside of datasets, the chosen model can obtain 97.35% in the average of the fit value for all the outputs.

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Microwave Processing of Polymer Matrix Composites: Review of the Understanding and Future Opportunities

Cited by 5 publications

References 54 publications

Exploring Environmental Settings to Improve the Printability of Paroxetine-Loaded Filaments by Fused Deposition Modelling

Exploring Environmental Settings to Improve the Printability of Paroxetine-Loaded Filaments by Fused Deposition Modelling

Microwave‐assisted molding of sisal/HDPEcomposites: Water absorption, diffusion kinetics and tribological behavior

Identification of microwave heating system with symmetrical octagonal tube cavity using ARX model

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