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Journal of Fundamentals and Applications of Chemical Engineering
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : -     EISSN : 2964710X     DOI : http://dx.doi.org/10.12962/j2964710X.v4i2
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering
Journal of Fundamentals and Applications of Chemical Engineering (JFAChE) (eISSN: 2964-710X) is managed by Department of Chemical Engineering, Faculty of Industrial Technology and Systems Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya. JFAChE is an international research journal which invites contributions of original and novel fundamental researches. The journal aims to capture new developments and initiatives in chemical engineering related and specialized areas. Papers which describe novel theory and its application to practice are welcome, as well as for those which illustrate the transfer of techniques from other disciplines. Featuring research articles and reviews, the journal covers all aspects related to chemical engineering, including chemical reaction engineering, environmental chemical engineering, and materials synthesis and processing. Published annually in August and December. It is open to all scientists, researchers, education practitioners, and other scholars, providing an opportunity for technology transfer and collaboration.
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "Vol 6, No 2 (2025): In Press" : 2 Documents clear
Synthesis of Cocoamide Dea Surfactant From Virgin Coconut Oil (VCO) Through Ester Aminolysis Using Microwave Qadariyah, Lailatul; Rifky, Achmad; Arnoesaga R., Rahmadi
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 2 (2025): In Press
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i2.20061

Abstract

The aim of this research is to find the optimum operating conditions in the aminolysis process of methyl ester into surfactant with variable of microwave power, heating time, and reactant weight ratio. Transesterification is a reaction that removes alcohol and forms esters and other forms of alcohol. In the transesterification, VCO was mixed methanol with mol ratio of 1:6 and NaOH catalyst as much as 0.6% by weight of oil was added. The reaction was carried out for 3 minutes and the microwave power was 450 W while stirring with a magnetic stirrer. After that, the ester aminolysis step was carried out by mixing the methyl ester from the transesterification step with diethanolamine in the microwave power range of 150-750 W, reaction time range of 0-30 minutes, and reactant weigt ratio range of 1-2.  Cocoamidea DEA will be analyzed using FT-IR spectrophotometry, acid number, saponification number, ester number, and also HLB. The highest yield of Cocomide DEA and surfactant conversion were 87.47% and 0.83 at reaction time of 20 minutes, microwave power of 600 W, and ratio of weight of methyl reactant 1:2. Cocoamide DEA compounds have been formed with the emergence of amide groups, namely C=O with a wavenumber of 1619.75 cm-1. The surfactant value of HLB is 6-8 which corresponds to its function as a water in oil emulsifier.
Comparative Analysis of Hydrogel Polymer in Smartphone Devices : Thermal Stability Focused Andriani, Fitria Dwi; Matovanni, Maudy Pratiwi Novia; Dharmawan, Valda Ashila; Fata, Muhammad Zainul; Marchanda, Ratu Zosa; Pertiwi, Beta Cahaya
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 2 (2025): In Press
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i2.23235

Abstract

Hydrogel polymers have emerged as transformative materials in the field of flexible electronics, offering unparalleled properties such as high water content, mechanical flexibility, and tunable conductivity. This review critically examines the thermal stability of hydrogels and their applications in electronic devices, with a focus on smartphone technology. Despite their inherent susceptibility to thermal fluctuations—ranging from freezing-induced brittleness to dehydration at elevated temperatures—recent advancements have significantly enhanced their resilience.  Strategies such as incorporating cryoprotectants (e.g., glycerol, ionic liquids), optimizing crosslinked networks, and balancing hydrophilic-hydrophobic interactions have proven effective in mitigating these challenges. These innovations enable hydrogels to maintain functionality in extreme environments, making them ideal for flexible sensors, energy storage devices, and touch screens. Notably, thermoresponsive hydrogels, which exhibit reversible phase transitions at critical solution temperatures, are paving the way for adaptive cooling systems and dynamic interfaces in next-generation electronics. The integration of hydrogels into electronic devices not only addresses thermal management issues but also unlocks new possibilities for wearable and biodegradable technologies. This review underscores the interdisciplinary potential of hydrogels, highlighting their role in advancing sustainable, high-performance electronic systems while identifying future research directions to overcome existing limitations.

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