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Rusnaenah, Andi
Politeknik STMI Jakarta
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SYNTHESIS OF SILVER NANOPARTICLES USING BIOREDUCTOR OF KETAPANG LEAF EXTRACT (Terminalia catappa) Andi Rusnaenah; Muhammad Zakir; Prastawa Budi
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6405

Abstract

It had been done research about biosynthesis of nanoparticle silver (AgNPs) by using extract of ketapang leaf. The characterization result spectrum UV-Vis, XRD,PSA, TEM, dan FTIR show that increasing concentration AgNO3 increase wavelength (), the best concentration AgNO3 is 1 mM with SPR at  430-432 nm. The increasing temperature tend to decrease intensity of absorption, the best temperature of synthesis is 30oC with intensity absorption 3.492 show the obtained crystal of silver with average size distribution about 47.1 nm. Based on TEM measurement, size of obtained AgNPs is 36 nm with ball shape. The –OH group responsible in reduction of AgNO3 to become AgNPs. 
Structure Relaxation Disruption on Temperature-dependence of Polymerization of HTPB-based Polyurethane Afni Restasari; Nur Hamid; Leonard Marpaung; Andi Rusnaenah; Adi Sukma; Rahmawati Sukma
Jurnal Teknologi Dirgantara Vol 19, No 2 (2021)
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3654

Abstract

The temperature-dependence of polymerization rate of hydroxyl-terminated polybutadiene (HTPB)-based polyurethane can be disrupted by a structure relaxation of polymer.  Objective of the study is to investigate the disruption on the polyurethane (PU) formed of various molecular weight of HTPB. The study was carried out by applying temperature of 50, 60 and 70 oC in measuring viscosity until 80 minutes of reaction. The sample that were used is HTPB with various molecular weight and Toluene diisocyanate (TDI). Based on decreasing value of viscosity, it is obtained that relaxation temperature of HTPB-based PU is around 60 – 70 oC. By applying Eyring equation of flow, it is found that relaxation of structure causes the existence of relaxation dominant-time (RDT). RDT is the reaction time at which molar volume reaches the maximum value. Furthermore, by determining activation entropy, the RDT was revealed to be a borderline between two type of polymerization. Linear reaction occurs before RDT, while cross-link reaction occurs after RDT. From structure point of view, PU-polymerization type of HTPB with low molecular weight tend to be more sensitive towards structure relaxation which is originated from hard segment.  
Analisis Sistem Pengambilan Keputusan dalam Pembelian Mobil Menggunakan Metode Analytical Hierarchy Process Dewi Auditya Marizka; Wilda Sukmawati; Irma Agustiningsih; Indra Yusuf; Andi Rusnaenah
NUCLEUS Vol 4 No 1 (2023): NUCLEUS
Publisher : Neolectura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37010/nuc.v4i1.1326

Abstract

Along with the development of the times the demand for four-wheeled vehicles is increasing, because it is undeniable that four-wheeled vehicles are very much needed by the people to support their daily activities such as in terms of work, vacation, and etc. Certainly in terms of choosing a four-wheeled vehicle it must be adjusted to the individual's needs, because a car with different types or specifications will have different functions as well. There are various kinds of criteria in terms of choosing a car that must be considered by the individual concerned. This is what motivates us to conduct research using the Decision Support System (DSS) in the process of selecting four-wheeled vehicles by implementing the Analytical Hierarchy Process (AHP) method carried out by weighting and setting priorities so that ultimately the best alternative is to choose four-wheeled vehicles.
Edukasi Penggunaan Komposit Polimer ABS / Nanopartikel Untuk Meningkatkan Spesifikasi Pada Salah Satu Produk Komponen Mobil Core Tray Andi Rusnaenah; Isma Wulansari; Nur Azizah Kurniasari
Jurnal Serambi Engineering Vol. 9 No. 1 (2024): Januari 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Nanocomposite polymers have become a major topic of research in nanotechnology. Nanoclays nanocomposite technology be able to improve the mechanical, thermal, and barrier performance properties with a minimum addition of <10 wt%. The deficiency of acrylonitrile butadiene styrene (ABS) component materials is flammability, so a method needed to increase ABS thermal which is through the synthesis of ABS nanocomposite by mixing graphene, nitrile butadiene rubber (NBR) and montmorillonite nanofil 15 (N15) in ABS mixture. The core tray has low heat resistance, is easily damaged and understands composite processes that can improve the thermal properties of the materials used. This program focuses on helping to improve industrial knowledge in solving the problem of processing raw materials used to produce core trays. Nanoparticles can provide the industry with an understanding of the application of nanoparticles to ABS materials. Data obtained that get an increase in the knowledge, skills and income of partners. The conclusion is necessary to monitor the application of nanocomposites by mixing the raw materials for making nanoparticles with graphene, NBR and N15 in a mixture of ABS, conducting increased research in plastic materials to improve quality and impact on competitive prices, establishing partnerships to product improvement with conducting research and product testing.
Pendampingan Pelatihan Teknis Pembuatan Pewangi dan Tiner Otomotif Pada Industri Kecil Menengah Wulansari, Isma; Rusnaenah, Andi; Imdam, Irma Agustiningsih
Journal of Community Services in Sustainability Vol. 1 No. 1 (2023): Journal of Community Services in Sustainability
Publisher : Politeknik STMI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52330/jocss.v1i1.141

Abstract

Pewangi adalah campuran minyak esensial, senyawa aromatik, fiksatif, dan pelarut yang digunakan oleh manusia, ruang, atau interior mobil. Membran pewangi harus dapat mengatur kecepatan sebaran dalam berbagai kondisi lingkungan, seperti kecepatan udara dan suhu. Tiner adalah cairan yang memiliki kemampuan untuk melarutkan resin dan mempermudah pencampuran resin dan pigment selama proses pembuatan cat. Konsentrasi tiner mempengaruhi mekanisme penguapan tiner, tekstur permukaan, sifat kilap, dan kecepatan kering. Program pelatihan teknis pembuatan pewangi dan tiner ini bertujuan untuk meningkatkan produk berkualitas tinggi dengan biaya bahan baku serendah mungkin, menggunakan bahan kimia yang tidak berbahaya, meningkatkan kualitas umur simpan produk, dan memenuhi Standar Nasional Indonesia (SNI). Pelatihan pewangi dan tiner dapat membantu mitra memahami jenis pewangi dan tiner mana yang bagus untuk digunakan di industri otomotif. Hasil pelatihan menunjukkan bahwa perlu ada pemantauan, variasi pewangi dan tiner yang lebih baik, dan kolaborasi untuk meningkatkan produk melalui penelitian dan pengujian produk yang lebih lanjut.
Biosintesis Nanopartikel Perak menggunakan Ekstrak Daun Ketapang, Modifikasi dengan Asam p-kumarat untuk Aplikasi Deteksi Melamin Rusnaenah, Andi; Zakir, Muhammad; Budi, Prastawa
Indonesian Journal of Chemical Research Vol 4 No 2 (2017): Edisi Bulan Januari (Edition For January)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2017.4-and

Abstract

Biosynthesis of silver nanoparticles (AgNPs) using ketapang leaf extract, modification with p-coumaric acid for detecting melamine has conducted. This research aimed to synthesize AgNPs via bio-reduction method using ketapang leaf extract followed by modification with p-coumaric acid (APK), and evaluating its application detecting melamine. The AgNPs were characterized through ultraviolet-visible absorption spectroscopy (UV-Vis) and X-ray diffraction (XRD). Observation suggested that an increase of incubation time had affected its surface Plasmon resonance trend. Further analysis of crystallite via XRD suggested that nanoparticle size at 43 nm estimated using Debye-Scherer, within the form of unit cells is cubic. The performance of product as melamine detector suggested that the AgNPs-APK had detected melamine in range of concentration from 0.1 to 1000 ppm.
Penyuluhan Penggunaan Nanotalcs sebagai Penguat pada Komposit Berbasis High Density Polyethylene (HDPE) Recycle Rusnaenah, Andi; Hanifah, Rizqi Siraj
Idea Pengabdian Masyarakat Vol. 4 No. 03 (2024): September
Publisher : PT.Mantaya Idea Batara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53690/ipm.v4i03.254

Abstract

High density polyethylene (HDPE) merupakan salah satu polimer yang banyak digunaakan untuk produksi komponen otomotif), penggunaan material dengan skala industri berpotensi menghasilkan limbah (HDPE recycle). HDPE merupakan termoplastik semikristalin yang memilikisifat mekanik yang baik, biokompatibilitas, dan dapat recycle dengan biaya rendah. Nanokomposit polimer menggabungkan sifat-sifat polimer dan manfaat nanofiller untuk meningkatkan sifat mekanik dan termal HDPE recycle. Talc merupakan mineral paling lembut, bersifat tidak larut dalam air dan sedikit larut dalam asam mineral encer, memiliki kekerasan 1 skala Mohs, umumnya digunakan sebagai filler dalam material komposit untuk mengurangi biaya produksi, meningkatkan sifat kimia/fisika dan memberikan fungsi yang baru. Penyuluhan komposit polimer dilakukan untuk meningkatkan kualitas HDPE recycle yang digunakan dalam membuat produk HDPE sheet. Penyuluhan dilakukan dengan metode ceramah dalam bentuk presentasi dan tanya jawab. Hasil penyuluhan diperoleh respon yang positif dari Industri (Mitra), meningkatkan pengetahuan dan keterampilan mitra, serta dapat meningkatkan kapasitas produksi melalui spesifikasi produk yang dihasilkan dalam pengujian, pengubahan komposisi bahan baku dan standarisasi produk komponen yang diproduksi (HDPE sheet). Hasil evaluasi diperoleh bahwa penyuluhan terkait penggunaan micro dan nanotalc untuk meningkatkan sifat termal dan mekanik komposit berbasis HDPE recycle penting dilakukan di Industri komponen otomotif, dan meningkatnya keberdayaan mitra, serta menjalin kemitraan dalam hal peningkatan produk dengan melakukan penelitian dan pengujian produk.
PENYULUHAN PENERAPAN KESELAMATAN DAN KESEHATAN KERJA (K3) DI CV MORIO HATRI INDONESIA Rusnaenah, Andi; Ismono, Ahlan; Imdam, Irma Agustiningsih; Pramesty, Annisya Zahra
Jurnal Abdi Insani Vol 12 No 2 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i2.2280

Abstract

Keselamatan dan Kesehatan Kerja (K3) merupakan aspek penting yang kurang mendapat perhatian di CV Morio Hatri Indonesia, sebuah perusahaan manufaktur yang bergerak dalam perakitan suku cadang (sparepart) otomotif. Rendahnya pemahaman pekerja terhadap K3, minimnya ketaatan dalam penggunaan Alat Pelindung Diri (APD), serta kurangnya infrastruktur K3 merupakan permasalahan utama yang ditemukan. Tujuan penyuluhan ini adalah untuk meningkatkan pengetahuan pekerja mengenai pentingnya K3, penggunaan APD, identifikasi bahaya dan prosedur evakuasi. Metode meliputi analisis awal (survei dan wawancara), desain materi (presentasi, video, simulasi), perancangan arsitektur infrastruktur yang diperlukan, implementasi melalui penyuluhan serta praktik langsung, dan monitoring evaluasi dengan pendampingan serta kuisioner terkait peningkatan keberdayaan, keterampilan, serta kepuasan mitra. Hasil menunjukkan adanya masalah K3 berupa minimnya pengetahuan dan penerapan K3. Tim PkM menyusun materi penyuluhan dalam bentuk presentasi, video, dan simulasi terkait pentingnya K3, penggunaan APD, identifikasi bahaya, serta prosedur evakuasi. Selain itu, tim juga merancang infrastruktur K3 seperti jalur evakuasi, tanda keselamatan, dan peralatan darurat. Penyuluhan melalui presentasi dan simulasi penggunaan APD berhasil dilaksanakan dengan partisipasi pekerja serta manajemen industri. Hasil monitoring dan evaluasi menunjukkan peningkatan pengetahuan pekerja, penggunaan APD yang lebih konsisten, pemahaman potensi bahaya, dan prosedur evakuasi, meskipun masih dibutuhkan pendampingan lanjutan untuk memastikan konsistensi penerapan K3. Penyuluhan ini berhasil meningkatkan pengetahuan pekerja dan penerapan K3 di Industri CV Morio Hatri Indonesia. Meningkatkan pengetahuan dan keterampilan penggunaan APD, kemampuan mengidentifikasi bahaya dan pengetahuan prosedur evakuasi. Untuk menjaga keberlanjutan program, disarankan adanya pelatihan berkelanjutan dan pengawasan ketat terhadap penerapan K3 di perusahaan.
Structure Relaxation Disruption on Temperature-dependence of Polymerization of HTPB-based Polyurethane Restasari, Afni; Hamid, Nur; Marpaung, Leonard; Rusnaenah, Andi; Sukma, Adi; Sukma, Rahmawati
Indonesian Journal of Aerospace Vol. 19 No. 2 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3654

Abstract

The temperature-dependence of polymerization rate of hydroxyl-terminated polybutadiene (HTPB)-based polyurethane can be disrupted by a structure relaxation of polymer. Objective of the study is to investigate the disruption on the polyurethane (PU) formed of various molecular weight of HTPB. The study was carried out by applying temperature of 50, 60 and 70 oC in measuring viscosity until 80 minutes of reaction. The sample that were used is HTPB with various molecular weight and Toluene diisocyanate (TDI). Based on decreasing value of viscosity, it is obtained that relaxation temperature of HTPB-based PU is around 60 – 70 oC. By applying Eyring equation of flow, it is found that relaxation of structure causes the existence of relaxation dominant-time (RDT). RDT is the reaction time at which molar volume reaches the maximum value. Furthermore, by determining activation entropy, the RDT was revealed to be a borderline between two type of polymerization. Linear reaction occurs before RDT, while cross-link reaction occurs after RDT. From structure point of view, PU-polymerization type of HTPB with low molecular weight tend to be more sensitive towards structure relaxation which is originated from hard segment.
Co-Authors Adi Sukma Afni Restasari Dewi Auditya Marizka Hamid, Nur Hanifah, Rizqi Siraj Indra Yusuf Irma Agustiningsih Irma Agustiningsih Imdam Isma Wulansari Ismono, Ahlan Leonard Marpaung Marpaung, Leonard Muhammad Zakir Muhammad Zakir Nur Azizah Kurniasari NUR HAMID Pramesty, Annisya Zahra Prastawa Budi Prastawa Budi Rahmawati Sukma Restasari, Afni Sukma, Adi Sukma, Rahmawati Wilda Sukmawati Wulansari, Isma