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247,160 results on '"Process Chemistry and Technology"'

102. Antimicrobial performance of silver–copper–zeolite microparticle-treated organic cotton fabric using versatile methods

Author

Md Salauddin Sk, Rony Mia, Ejajul Hoque, Bulbul Ahmed, Md Jawad Ibn Amin, Shekh Md Mamun Kabir, and Sakil Mahmud

Subjects
Process Chemistry and Technology, Materials Chemistry, Surfaces, Coatings and Films
Abstract

Herein, the influence of the antimicrobial treatments of organic cotton fabrics (OCFs) using silver–copper–zeolite microparticles (hereafter referred to as ‘zeolite’) was investigated. There were six different methods applied to six different types of OCFs. The antimicrobial performance demonstrates around 95.33 and 93.88% reductions in gram-positive and gram-negative bacteria after 30 times home laundry, respectively. The surface plasmon resonance of color stability meets the commercial requirements with colorfastness ratings of 3–4 for wash, 4 for light, 4–5 for dry rubbing and 3–4 for wet rubbing. These findings established that this treatment successfully endowed OCFs with long-lasting antimicrobial capabilities and thermal stability due to the interaction with the microparticles. The phenomenon was further confirmed by morphological, spectroscopic and thermal characterization. This approach of OCF functionalization avoiding hazardous chemicals could be a benchmark for antimicrobial performance in sustainable industrial applications.

Published
2023

117. Dolomite catalyst for fast pyrolysis of waste cooking oil into hydrocarbon fuel

Author

Yorinda Buyang, Reva Edra Nugraha, Holilah Holilah, Hasliza Bahruji, Suprapto Suprapto, Aishah Abdul Jalil, Muryani Muryani, and Didik Prasetyoko

Subjects
Fluid Flow and Transfer Processes, Process Chemistry and Technology, Filtration and Separation, Catalysis, Energy (miscellaneous), Education
Published
2023

125. Influence of deposition temperature on the structure and functional properties of Mg doped hydroxyapatite coatings deposited on manufactured AZ31B alloy substrates by RF magnetron sputtering

Author

Iulian Pana, Anca Constantina Parau, Cosmin Mihai Cotrut, Mihaela Dinu, Diana Maria Vranceanu, Adrian E. Kiss, Giuseppe Serratore, Dennis A. Böhner, Catalin Vitelaru, Giuseppina Ambrogio, Annette G. Beck-Sickinger, and Alina Vladescu (Dragomir)

Subjects
Process Chemistry and Technology, Materials Chemistry, Ceramics and Composites, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Published
2023

126. High-temperature oxidation behavior of CeO2-doped MAO coatings on TC4 titanium alloy

Author

Xiaowen W Chen, Liping P Cai, Defen F Zhang, Meilun L Li, Yun Ran, and Wei Ping

Subjects
Process Chemistry and Technology, Materials Chemistry, Surfaces, Coatings and Films
Abstract

To improve the surface micropores and high-temperature oxidation resistance of micro-arc oxidation (MAO) coatings on TC4 titanium alloy, cerium dioxide (CeO2) particles were introduced into the electrolyte to prepare MAO composite coatings with different cerium dioxide contents. An X-ray diffractometer, a scanning electron microscope and a multifunctional material surface performance tester were used to analyze the phase composition, surface morphology and bonding force of the samples, respectively. The TC4 substrate, undoped MAO sample and optimally doped MAO sample were oxidized at 650, 750 and 850°C, respectively. The results show that the best-doped MAO samples show excellent high-temperature oxidation resistance at the three temperatures. Compared with the maximum oxidation weight gain per unit area of the undoped MAO sample, that of the optimally doped MAO sample decreased by 10.8, 19.6 and 22.1%, respectively. This is mainly because the thickness, hardness and adhesion of MAO coatings are all increased by doping cerium dioxide particles, and a dense protective layer can also be formed on the surface of the TC4 substrate. The invasion of the oxygen medium is effectively prevented. In this research work, the optimal addition amount of cerium dioxide is 6 g/l.

Published
2023

134. Synthesis and structural, microstructural and humidity sensing behavior of (x)rGo+(1-x)CoCr2O4 composite for humidity sensor applications

Author

Jagadeesha Angadi V, B. Chethan, Nagaraj Basavegowda, Anuj Kumar, Abdullah M. Al-Enizi, Mohd Ubaidullah, Satbir S. Sehgal, Manish Gupta, S.O. Manjuantha, and Vinayak Pattar

Subjects
Process Chemistry and Technology, Materials Chemistry, Ceramics and Composites, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Published
2023

147. Poly(ethylene) oxide/erbium oxide as T2 and T1-T2 dual-mode MRI diagnostic nanofibres

Author

Munirah Jamil, Iskandar Shahrim Mustafa, Naser Mahmoud Ahmed, Shahrul Bariyah Sahul Hamid, Thair Hussien Khazaalah, Efenji Godwin, Nabasu Seth Ezra, and Hayder Naeem Salah

Subjects
Process Chemistry and Technology, Materials Chemistry, Ceramics and Composites, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Published
2023

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