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Hikmatun Ni'mah
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Gedung Teknik Kimia, lt. 2 Ruang Sekretariat Teknik Kimia Jalan Teknik Kimia Kampus ITS Sukolilo Surabaya
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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 55 Documents
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Characterization of Poly Lactic Acid (PLA) Based on PEG-200 Modification of Clay-CaCO3 as Subtitution to LDPE Coating Paper Rohmah, Aisyah Alifatul Zahidah; Widjaja, Tri; Sari, Citra Yulia; Fajrin, Alifah Nur Aini
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 1 (2025)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i1.23018

Abstract

Plastics play a central role in daily life due to their lightweight nature, mechanical strength, low cost, and durability. Nevertheless, their environmental impact is significant, as they contribute to pollution and global warming. Polylactic Acid (PLA) has gained attention as a biodegradable alternative to conventional LDPE plastics. Although environmentally friendly, PLA exhibits inherent limitations such as brittleness and insufficient toughness, which restrict its broader application. To overcome these drawbacks, plasticizers like Polyethylene Glycol (PEG) 200 and reinforcing agents such as clay and calcium carbonate (CaCO₃) are added to enhance its mechanical performance. This research aims to investigate how these additives affect the resulting film properties. The bioplastic film was produced using a solvent casting method with chloroform as the solvent. The mixture was stirred at ambient temperature for six hours, then cast in a single step into a closed mold and allowed to rest overnight to form a film. The resulting film had a white appearance, slight transparency, and a smooth, slippery surface. Compared to films produced using a layered pouring approach, those formed via the one-pour technique exhibited superior thickness and mechanical strength. To characterize the effects of the additives, several analytical methods were employed: X-Ray Diffraction (XRD) to analyze crystallinity, Thermogravimetric Analysis (TGA) to assess thermal stability, Fourier Transform Infrared Spectroscopy (FTIR) to identify functional groups and chemical bonds, and Dynamic Mechanical Analysis (DMA) to determine mechanical properties such as tensile strength, Young’s modulus, and elongation at break. Surface morphology was further examined using Scanning Electron Microscopy (SEM). The most favorable results were observed in the composition containing 80% PLA, 10% PEG, 5% CaCO₃, and 5% clay. This formulation yielded a crystallinity of 96.71%, a decomposition temperature of 366.22 °C, elongation at break of 12.98%, Young’s modulus of 56.77 MPa, and a tensile strength of 1.25 MPa. These findings suggest that the film has strong potential as a coating material to replace LDPE.
Synthesis of Cocoamide Dea Surfactant From Virgin Coconut Oil (VCO) Through Ester Aminolysis Using Microwave Lailatul Qadariyah; Achmad Rifky; Rahmadi Arnoesaga R.
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 Fitria Dwi Andriani; Maudy Pratiwi Novia Matovanni; Valda Ashila Dharmawan; Muhammad Zainul Fata; Ratu Zosa Marchanda; Beta Cahaya Pertiwi
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.
Synthesis and Characterization Magnetic Activated Carbon Derived from Coconut Shell for Pb(II) and Cd(II) Adsorption from Wastewater Sri Rachmania Juliastuti; Amanizar Aji Gumilang
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.v6i2.23422

Abstract

Activated carbon derived from coconut shell is a low cost adsorbent for heavy-metal removal. However, recovery of spent carbon from treated water remains challenging. This study developed a magnetically separable activated carbon magnetite composite (M-CSAC) and evaluated its adsorption toward Pb(II) and Cd(II). Coconut shell activated carbon (CSAC) was produced by Na₂CO₃ chemical activation and modified by mechanochemical incorporation of Fe3O4 through ball milling. SEM–EDX confirmed morphology refinement and successful Fe loading (11 wt.%), while increased surface oxygen indicated Fe–O-rich domains. N₂ adsorption–desorption showed that the specific surface area decreased from 356.04 m2/g to 319.35 m2/g. In contrast, total pore volume increased from 0.256 cm3/g to 0.3166 cm3/g and the average pore diameter widened from 2.88 nm to 3.97 nm, consistent with mesopore development. XRD reflections at 2θ = 30.24°, 35.40°, 43.18°, 57.00°, and 62.50° matched magnetite (Fe3O4). Lattice-parameter fitting (a = 8.3837 Å) supported phase stability without detectable γ-Fe2O3. In batch tests (C0 = 50 mg L⁻¹, V = 100 ml, m = 0.5 g), M-CSAC achieved removals of 99.58% for Pb(II) and 96.44% for Cd(II), with Qe values of 9.958 mg/g and 9.644 mg/g, respectively. Overall, M-CSAC combines high adsorption efficiency with practical magnetic separability for water 
Utilization of Sugarcane Bagasse Ash in Portland Composite Cement: Effects on Mortar Compressive Strength Alif Nur Laili Rachmah; Binti Ruliana; Sabrianah Badaruddin; Geraldi Rahanra; Ratri Sekaringgalih; Achmad Qodim Syafaatullah
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.v6i2.23097

Abstract

Sugarcane Bagasse Ash (SBA) is an agricultural biomass waste with a high content of reactive silica, making it a promising candidate as a pozzolanic additive in mortar based on Portland Composite Cement (PCC). This study investigates the influence of SBA incorporation on the compressive strength of mortar by substituting cement at levels of 5%, 10%, and 15% by weight. The SBA was prepared through calcination at 650 °C and further treated with 2N hydrochloric acid (HCl) to enhance its amorphous silica composition. Compressive strength tests were conducted at 3, 7, and 28 days of curing. Results indicate that the 5% SBA mixture provided the highest compressive strength, reaching 303–301 kg/cm² on day 28, and met the Indonesian National Standard (SNI 15-7064-2014) for structural applications. The Pozzolanic Activity Index (PAI) of 76% further confirmed SBA’s reactivity as a pozzolan under ASTM C618-99 criteria. Beyond mechanical performance, SBA utilization reduces clinker consumption and CO₂ emissions, promoting sustainability in cement production. Additionally, the formation of additional calcium silicate hydrate (C–S–H) gel improves the mortar’s microstructure. In conclusion, SBA is a feasible, locally available, and environmentally friendly alternative for enhancing the performance and sustainability of cement-based building materials.

Page 6 of 6 | Total Record : 55

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