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# Taguchi and ANOVA analysis for the optimization of the microencapsulation of a volatile phase change material

Publication date: March–April 2021

Source: Journal of Materials Research and Technology, Volume 11

Author(s): Abdullah Naseer Mustapha, Yan Zhang, Zhibing Zhang, Yulong Ding, Qingchun Yuan, Yongliang Li

Published

on

The microencapsulation of volatile phase change materials is an important and challenging area for low-temperature thermal energy storage. Our previous studies have effectively addressed the challenge of long-term volatile core retention and also indicated that the quality of the obtained poly(urea-formaldehyde) microcapsules is highly affected by various process parameters, including reaction temperature, initial pH, reaction time, and homogenization speed. In this paper, the Taguchi orthogonal array has been employed to optimise controllable process parameters to identify the most synergistic combination, in order to maximise the payload, yield, and encapsulation efficiency. The Taguchi signal-to-noise ratio results substantiated that the most efficient combination of parameters was 3 h reaction time, pH 3.5, 55 °C reaction temperature, and 1200 rpm homogenization speed. With this combination of parameters, microcapsules with superbly high payload of 95.2%, as well as a yield of 30.5% and encapsulation efficiency of 71.1% were amalgamated. In addition, Analysis of Variance (ANOVA) was also utilised to demonstrate the mean response magnitudes (% contribution) of each of the four controllable process parameters, in terms of contribution for the payload, yield, and encapsulation efficiency. Overall, it was indicated that the temperature is the most influential parameter at 83.1% contribution, followed by pH at 6.8%, reaction time at 5.2%, and homogenization speed at 4.9%. Such findings in this work postulate the fundamental insights into maximising the output of the formulation conditions, which in turn is aimed to minimise the time and cost of production of the microcapsules.

# Corrigendum to “A facile way to modify carbon fibers and its effect on mechanical properties of epoxy compositesˮ [J Mater Res Technol 10 (2021) 164–174]

Publication date: March–April 2021

Source: Journal of Materials Research and Technology, Volume 11

Author(s): Hongwei He, Tao Zhang, Yongkang Yang

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on

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# Fabrication and characterization of Au/Cr and Cr/Au Multilayered plasmonic nanofilms for sensing applications

Publication date: March–April 2021

Source: Journal of Materials Research and Technology, Volume 11

Author(s): Mohammed Shaban, Abdullah Almohammedi, Shreef Shaban, Mohamed Mourad, Khulood Abu Al-Ola, Waleed Osman

Published

on

Volume 11, March–April 2021, Pages 1868-1880

open access

## Keywords

C2H2 Gas sensor

Multilayered nanofilms

Surface plasmon

Electrical properties

RF sputtering

# A new approach of predicting dynamic recrystallization using directly a flow stress model and its application to medium Mn steel

Publication date: March–April 2021

Source: Journal of Materials Research and Technology, Volume 11

Author(s): Mohd Kaswandee Razali, Man Soo Joun

Published

on

Volume 11, March–April 2021, Pages 1881-1894

open access

## Keywords

Dynamic recrystallization

Closed-form function

Flow stress model

Avrami kinetics model

Generality

Flexibility