Article Per Year (5 Year)
p-Index From 2020 - 2025
1.116
P-Index
This Author published in this journals
All Journal Jurnal Sains Materi Indonesia Jurnal Riset Industri Indonesian Journal of Chemistry Mesin JURNAL SELULOSA Jurnal Teknologi Bahan dan Barang Teknik Automotive Experiences Teknologika
Mardiyati, Mardiyati
Fakultas Teknik Mesin Dan Dirgantara, Institut Teknologi Bandung
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

Published : 19 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : JURNAL SELULOSA

 1 
PEMBUATAN MIKROKRISTALIN SELULOSA ROTAN MANAU (Calamus manan sp.) SERTA KARAKTERISASINYA ., Steven; ., Mardiyati; Suratman, R.
JURNAL SELULOSA Vol 4, No 02 (2014): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.503 KB) | DOI: 10.25269/jsel.v4i02.84

Abstract

Rattan is one of natural resources of Indonesia which contains 30%-40% cellulose. Its high cellulose contents makes it very potential as a source of microcrystalline cellulose (MCC). In this research, manau rattan was characterized by using the Chesson methods. Microcrystalline cellulose was prepared by using two methods, i.e. alkalization and acid hydrolysis. Alkalization was performed by soaking manau rattan powder into sodium hydroxide 17,5% for 8 hours. Acid hydrolysis was prepared by using sulfuric acid at a concentration of 0.1 M; 0.3 M; and 0.5 M for 4, 6, 8, and 10 hours. The crystallinity of MCC was quantitatively measured by XRD and qualitatively measured by using FTIR. In this research, we have successfully made microcrystalline cellulose from manau rattan. The highest crystallinity MCC of 72.42% was obtained from acid hydrolysis with 0.5 M for 10 hours. The crystallinity of the MCC product increases with concentration and hydrolysis time.Keywords: acid hydrolisis, alkalization, cellulose, manau rattan, MCCABSTRAKRotan merupakan salah satu kekayaan hayati Indonesia yang mengisi sepuluh persen hutan di Indonesia yang memiliki kadar selulosa mencapai 30-40%. Kadar selulosa yang cukup tinggi membuat rotan sangat berpotensi untuk dimanfaatkan sebagai bahan baku mikrokristalin selulosa (MCC). Rotan manau dikarakterisasi menggunakan metode Chesson. Pembuatan mikrokristalin selulosa terdiri atas dua tahap, yaitu alkalisasi dan hidrolisi asam. Tahap alkalisasi dilakukan dengan merendam rotan di dalam larutan NaOH 17,5% selama 8 jam. Tahap hidrolisis asam dilakukan dengan menggunakan asam sulfat pada berbagai konsentrasi, yakni 0,1; 0,3 dan 0,5 M selama 4, 6, 8, dan 10 jam. Kristalinitas dari MCC yang dihasilkan diukur dengan menggunakan XRD. Untuk mengetahui komposisi kimia serta kristalinitas MCC secara kualitatif, telah dilakukan karakterisasi dengan menggunakan FTIR. Pada penelitian ini, telah berhasil dibuat MCC yang bersumber dari rotan manau. Kristalinitas MCC tertinggi dihasilkan dengan perlakuan hidrolisis asam dengan konsentrasi 0,5 M selama 10 jam, yaitu sebesar 72,42%. Seiring dengan peningkatan konsentrasi serta waktu hidrolisis, kristalinitas MCC yang dihasilkan semakin tinggi.Kata kunci: alkalisasi, hidrolisis asam, selulosa, MCC, rotan manau
Serat Bambu Petung (Dendrocalamus asper) Teralkalisasi sebagai Penguat Komposit Polimer Gunawan Refiadi; Novan Bayu; Hermawan Judawisastra; Mardiyati Mardiyati
JURNAL SELULOSA Vol 8, No 01 (2018): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (37.376 KB) | DOI: 10.25269/jsel.v1i01.214

Abstract

The alkalized of petung bamboo fiber (Dendrocalamus asper) as reinforcement of polymer compositeAbstractPetung bamboo (Dendrocalamus asper) has good fiber characteristic and it has potential to substitute glass fiber as reinforcement in polymeric composite. However, like other natural based materials, bamboo fiber has a high variability in mechanical properties and inherently hygroscopic characteristic. Therefore it is required to optimize the petung bamboo qualities. The fiber optimization was carried out by alkalization process using NaOH solution with varying concentration of 0, 3, 5, and 10% v/v. Bamboo fiber processed in chemomechanical was used in this investigation. Characterization of density, mechanical and chemicals was conducted by pycnometry method, tensile strength testing, Fourier Transform Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The data variability was analyzed by Weibull distribution. Result indicates that the optimum condition of alkalization process of bamboo fiber using NaOH solution of 5% v/v which has fiber diameter of 175.098 ± 58.017 mm, tensile strength of 384 MPa, and characteristics strength of 390.5 MPa.Keywords: petung bamboo; alkalization; characteristics AbstractBambu petung memiliki karakteristik serat yang baik sehingga berpotensi sebagai pengganti serat gelas untuk penguat komposit polimer. Namun, seperti umumnya serat alam, serat bambu memiliki variabilitas sifat mekanis tinggi dan sifat higroskopik yang inheren. Oleh karena itu diperlukan upaya optimalisasi kinerja serat bambu petung. Optimalisasi kinerja serat dilakukan melalui proses alkalisasi dengan variasi larutan NaOH pada konsentrasi 0, 3, 5, dan 10% v/v. Serat bambu hasil dari proses kimia-mekanik digunakan dalam penelitian ini. Karakterisasi densitas, sifat mekanik, dan sifat kimia serat masing-masing dilakukan dengan metode piknometri, uji tarik, Fourier Transform Spectroscopy (FTIR), Scanning Electron Microscopy (SEM). Analisis variabilitas data menggunakan distribusi Weibull. Hasil menunjukkan bahwa kondisi optimum alkalisasi serat bambu petung yaitu menggunakan larutan NaOH 5% v/v yang menghasilkan serat berdiameter 175,098 ± 58,017 mm, kekuatan Tarik 384 MPa, dan kekuatan karakteristik 390,5 MPa.Kata kunci: bambu petung; alkalisasi; karakteristik 
Co-Authors Ari Darmawan Pasek Arif Basuki Arif Basuki Bambang Widyanto Bambang Widyanto Deni Shidqi Khaerudini Djamaludin, Octianne Fauza, Anna Niska Gunawan Refiadi Hendrarsakti, Jooned Hermawan Judawisastra Indriyati Indriyati Irwan Suriaman Jhonsen Taharuddin Komalasari, Maya Larasati Irischa Ramadhani Luhadi Satriawan Maemonah, Maemonah Mauliza, Ika Natalia Muhammad Aldy Hassan Muhammad Labib Adyavit Novan Bayu Purnomo, Ikhsan R. Suratman R. Suratman, R. Raden Reza Rizkiansyah Raden Reza Rizkiansyah Rike Yudianti Rizkiansyah, Raden Reza Rochim Suratman Santosa, Sigit Puji Shieddique, Apang Djafar Silvia Mar’atus Shoimah Srahputri, Nurdesri Steven . Steven Steven Steven Steven Steven Steven Steven Steven Sukarman Sukarman Widyanto, Bambang Yulfian Aminanda Yuyun Irmawati