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All Journal Jurnal Biologi Tropis Jurnal Teknik Industri Terintegrasi (JUTIN) Warta Perkaretan JES-TM Social and Community Service
Syahwardini, Trisuciati
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Education Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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PENGARUH FULL ACRYLIC DAN STYRENE ACRYLIC TERHADAP KINERJA LATEKS KARET ALAM SEBAGAI BINDER PADA APLIKASI CAT EMULSI Wiranata, Arya; Sugesti, Heni; Syahwardini, Trisuciati; Pakpahan, Cindy; Rosmawati, Putri; Nurhidayah, Nurhidayah; Bahruddin, Bahruddin
Warta Perkaretan Vol. 44 No. 2 (2025): Volume 44, Nomor 2, Tahun 2025
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.wp.v44i2.1223

Abstract

Permintaan cat dalam industri konstruksi terus meningkat, terutama cat emulsi berbasis air yang bergantung pada kualitas bahan pengikat (binder) sebagai komponen utama. Indonesia masih mengandalkan impor binder sintetis, sehingga diperlukan alternatif lokal yang ramah lingkungan. Lateks karet alam merupakan kandidat potensial, namun memiliki kelemahan dalam ketahanan cuaca dan waktu pengeringan. Penelitian ini mengembangkan binder berbasis lateks karet alam yang dimodifikasi dengan resin akrilik (full acrylic dan styrene acrylic) untuk meningkatkan daya rekat, ketahanan abrasi, dan stabilitas cuaca. Modifikasi dilakukan melalui proses pencangkokan menggunakan benzoyl peroxide, SLS, sodium sulfit, dan polipropilen glikol pada suhu 85°C selama 60 menit. Binder hasil modifikasi kemudian dicampur ke dalam cat emulsi dan diuji menggunakan FT-IR spectroscopy, uji ketahanan gosok (scrub) dan abrasi (abrasion) (mengacu pada ASTM D2486 method A), serta pengukuran sudut kontak (contact angle). Hasil menunjukkan peningkatan signifikan dalam performa cat, terutama pada sampel NRL-FA(70:30) dengan kadar binder 15%, yang mampu bertahan hingga 5.500 siklus dan memiliki sudut kontak 87°. Temuan ini menunjukkan bahwa lateks karet alam termodifikasi akrilik berpotensi menjadi alternatif binder berkinerja tinggi untuk aplikasi cat emulsi interior dan eksterior.
The Effect of Sugar Variation and Fermentation Time on Hydrogen Peroxide Levels and Eco-Enzyme Antibacterial Activity Primarista, Ni Putu Vidya; Wali, Abdul Rohman; Syahwardini, Trisuciati
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11178

Abstract

Eco-enzyme is a filtrate resulting from the fermentation of sugar, organic materials, and water, which is produced not only to reduce organic waste but also as a functional product. This study aims to examine the effects of sugar type and the eco-enzyme's fermentation duration on three key parameters: bacterial optical density, hydrogen peroxide concentration, and inhibition zone against Staphylococcus aureus and Escherichia coli. The bacterial optical density was determined from absorbance measured at 600 nm using a UV-Vis spectrophotometer, the hydrogen peroxide concentration was determined by permanganometric titration, and the inhibition zone of the eco-enzyme against Staphylococcus aureus and Escherichia coli was determined using the disc diffusion method. The results showed that the eco-enzyme fermented with molasses for one month had the highest bacterial optical density. Meanwhile, the highest hydrogen peroxide concentration was found in the eco-enzyme fermented with molasses for three months. In addition, the eco-enzyme fermented with molasses for three months exhibited the highest antibacterial activity against Staphylococcus aureus and Escherichia coli, with inhibition zones of 6.59 mm and 6.37 mm, respectively. Eco-enzymes fermented with granulated sugar, palm sugar, and molasses all showed antibacterial activity against Staphylococcus aureus and Escherichia coli. However, the highest antibacterial activity against both bacteria was observed in the eco-enzyme fermented with molasses for three months.
Kolaborasi PSDKU Siak: Peningkatan Fasilitas Bank Sampah Pelangi dengan Cat Ramah Lingkungan Wieanata, Arya; Syahwardini, Trisuciati; Hasrul, Hasrul; Primarista, Ni Putu Vidya; Wali, Abdul Rohman
Journal of Social and Community Service Vol. 4 No. 3 (2025): November 2025
Publisher : Faculty of Engineering University of Pahlawan Tuanku Tambusai

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Abstract

Achieving the Sustainable Development Goals (SDGs), particularly SDGs 11 and 12, is a top priority requiring the development of eco-friendly products and community empowerment through waste management. The Induk Pelangi Waste Bank in Siak Sri Indrapura is an active community-based waste management facility that requires support for infrastructure improvement. This program was conducted during October 2025, beginning with the identification of partner needs focused on the revitalization of the administration building. The solution was implemented through an appropriate technology approach, where the physical renovation process served as a vehicle for the application of eco-friendly natural rubber latex-based paint research. This innovative product is the result of research collaboration between Politeknik Negeri Sriwijaya PSDKU Siak and the University of Riau. The paint application was carried out in two coats in a participatory manner on the building's interior and exterior. The results show that the administration building now appears neater and more presentable. Furthermore, this activity successfully demonstrated the viability of green technology and served as an educational medium that aligns the waste bank's infrastructure with the environmental values it promotes.
Artikel Review: Teknologi Zeolit untuk Penangkapan Karbon (Carbon Capture): Karakteristik, Modifikasi dan Tantangan Operasional Hasrul, Hasrul; Syahwardini, Trisuciati; Wali, Abdul Rahman; Purfaji, Purfaji; Wiranata, Arya; Primarista, Ni Putu Vidya
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.53291

Abstract

Zeolites are promising adsorbents for CO₂ capture due to their high surface area, thermal stability, and cost-effectiveness. Their performance can be enhanced through chemical modifications such as amine impregnation, cation exchange, and hydrophobic surface grafting, enabling improved selectivity and resistance to moisture. However, operational challenges remain, including water competition, regeneration energy demand, and cyclic stability under industrial conditions. Strategies like guard beds, hydrophobic zeolites, and hybrid systems are being developed to overcome these limitations. Zeolite-based adsorption offers a sustainable pathway for reducing CO₂ emissions and advancing low-carbon technologies.
Co-Authors Bahruddin Bahruddin Hasrul Hasrul, Hasrul Nurhidayah Nurhidayah Pakpahan, Cindy Primarista, Ni Putu Vidya Purfaji, Purfaji Rosmawati, Putri Sugesti, Heni Wali, Abdul Rahman Wali, Abdul Rohman Wieanata, Arya Wiranata, Arya