Claim Missing Document
Check
Articles

Found 2 Documents
Search

SINTESIS PAPAN KOMPOSIT BERBAHAN DASAR SERAT SABUT KELAPA DAN SERAT BUAH KETAPANG DENGAN MATRIK PVAc Susilawati Susilawati; Aris Doyan; Kosim Kosim; Napaani Syafaati; Lalu Muliyadi
ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika Vol 6, No 2 (2020): November
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.237 KB) | DOI: 10.31764/orbita.v6i2.2770

Abstract

ABSTRAKSintesis komposit mengggunakan campuran serat sabut kelapa  dan serat buah ketapang  dengan matrik Polyvinil Acetat (PVAc) telah berhasil dilakukan. Sampel tersebut dibuat dengan variasi komposisi fraksi volume serat sabut kelapa dan serat buah ketapang yaitu (0:100), (30:70), (40:60), (50:50), (60:40), (70:30) dan (100:0)%. Perbandingan fraksi volume campuran serat alami dan matrik polyvinyl Acetat (PVAc) yang dibuat yaitu (70:30)%. Pembuatan sampel diawali dengan pengambilan serat sabut kelapa dan buah ketapang, penjemuran dan pemotongan, kemudian pencampuran serat sabut kelapa dan serat buah ketapang dengan matriks PVAc, pencetakan komposit dengan alat cetak tekan dan penjemuran. Sampel yang sudah jadi selanjutnya diuji fisiknya dengan cara menentukan nilai massa jenis dan kadar air sampel  untuk melihat kualitas sampel. Hasil penelitian menunjukan bahwa secara keseluruhan sampel telihat homogen, massa jenis sampel berkisar antara 0,52- 0,72 gram/cm3 dan nilai kadar air berkisar antara 10,05- 12,89%. Hal ini berarti bahwa sampel komposit telah memenuhi kriteria SNI 03-02105-2006 dan termasuk pada katagori berkerapatan sedang. Kata kunci: komposit; serat sabut kelapa; serat buah ketapang; PVAc. ABSTRACTSynthesis using a mixture of Coconut coir fiber and Terminalia catappa fruit fiber with the Polyvinyl Acetate (PVAc) matrix has been successfully carried out. The samples were made with variations in the composition of the volume fraction of Coconut coir fiber and Terminalia catappa fruit fiber, namely (0: 100), (30:70), (40:60), (50:50), (60:40), (70:30) ) and (100: 0)%. The ratio of the volume fraction of the mixture of natural fibers and the polyvinyl acetate (PVAc) matrix made was (70:30)%. The sample production begins with taking Coconut coir and Terminalia catappa fruit, drying and cutting, then mixing coconut coir and Terminalia catappa fruit fiber with a PVAc matrix, molding the composites using a press printing tool and drying. The finished sample is then physically tested by determining the density value and moisture content of the sample to see the quality of the sample. The results showed that the overall sample looked homogeneous, the density of the sample ranged from 0.52 to 0.72 grams/cm3 and the moisture content ranged from 10.05 to 12.89%. This means that the composite sample has met the SNI 03-02105-2006 criteria and is included in the medium density category. Keywords: composite; coconut coir fiber; terminalia catappa fruit fiber; PVAc.
Synthesis of Strontium Based on Natural Iron Sand North Lombok Coastal Club Doping Co and Cu Metal Ions As Power Generating Materials Susilawati; Aris Doyan; Saprizal Hadisaputra; Lalu Muliyadi
Jurnal Penelitian Pendidikan IPA Vol 9 No 7 (2023): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i7.3906

Abstract

The SrCl2 with natural iron sand is the basic material for making Strontontium M-Hexaferrite (SrM) as a generator of electricity in the form of permanent magnets samples which are doped to make the utilization of SrM more effective by adding metal ions that have almost the same size as cobalt (Co) and cupper (Cu) using the coprecipitation method. The synthesis process was carried out in the chemical laboratory of the FKIP, the Highway Engineering Laboratory, the Faculty of Engineering and the advanced Biology Laboratory of the FMIPA UNRAM. In this study, concentration variations and temperature variations were used during the calcination process, namely (x = 0.0; 0.4; 0.8 and 1.0) (T = 800; 1000 and 1100 0C). These variations greatly affect the sample, where the greater the concentration and calcination temperature, the darker the resulting color in the sample and this is in accordance with the purpose of the calcination process, namely the greater the temperature at the time of calcination, the higher the water content in the sample reduced because the solvent in the sample evaporates. In addition to these materials, the solvent used also plays an important role in the process of making samples, namely using 25% HCl to dissolve, 37% NaOH so that the precipitation process is faster and distilled water as a neutralizer.