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Maulida
Departemen Teknik Kimia, Fakultas Teknik Universitas Sumatera Utara
Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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PENGARUH PENGGUNAAN LARUTAN ALKALI PADA KEKUATAN TARIK DAN UJI DEGRADASI KOMPOSIT POLIPROPILENA BEKAS BERPENGISI SERBUK SERABUT KELAPA Fitriah Sari Nst; Harry Abrido S; Maulida
Jurnal Teknik Kimia USU Vol. 2 No. 1 (2013): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.55 KB) | DOI: 10.32734/jtk.v2i1.1421

Abstract

Composite is a combination of two different materials to obtain a material with physical properties and mechanical properties are better than any of its constituent parts. One of the many types of produced composite is composite with powdered natural fiber. This study uses the former polypropylene matrix derived from former cup bottle cup and powdered coconut fiber as filler treated with Sodium Hydroxide (NaOH). The ratio of the matrix and the filler is 85:15. This ratio is the optimum value obtained by the composite tensile strength with some ratios are 100:0, 95:5, 90:10 and 85:15. The purpose of this study was to determine the effect of the use of an alkaline solution of the resulting composite properties such as tensile strength, as well as the effect of degradation test on composite material former polypropylene with powdered coconut fiber as filler. Variation of composite degradation test were 10, 20 and 30 days, and immersion powder for 1 and 2 days. The method used in the manufacture of composites is the method of extrusion. The matrix form of the former polypropylene mixed with coconut fiber powder that has been soaked with NaOH, then mixed in a container, then put into the extruder operating temperature 1750C, printed using a hot press at a temperature of 1750C, and cut into pieces appropriate testing. The results showed that the optimum processing occurs with NaOH for 2 days. The test results showed degradation soaking for 2 days has tensile strength values ​​higher than 1 day is equal to 29,023 MPa at 0 day, 28,835 MPa at 10 days, 26,762 MPa at 20 days and 25,361 MPa at 30 days.
PENGARUH PENGGUNAAN LARUTAN ALKALI DALAM UJI FOURIER TRANSFORM INFRARED PADA KOMPOSIT TERMOPLASTIK BERPENGISI SERBUK SERABUT KELAPA Johannes Leonard S; Harry Abrido S; Maulida
Jurnal Teknik Kimia USU Vol. 2 No. 2 (2013): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (240.428 KB) | DOI: 10.32734/jtk.v2i2.1436

Abstract

Composite is a combination of two different materials to obtain a material with physical and mechanical properties are better than any of its constituent parts. One of the composite types which is much produced is composite with powdered natural fiber filler. This research uses the used polypropylene matrix and powdered coconut fiber as filler treated with Sodium Hydroxide (NaOH). The ratio of the matrix and the filler is 85:15. This ratio is the optimum value obtained by the composite tensile strength with ratio 100:0, 95:5, 90:10 and 85:15. The purpose of this study was to determine the effect of the use of an alkaline solution of the resulting composite properties especially towards lignin level, with Fourier Transform Infrared (FTIR) test on composite material used polypropylene with powdered coconut fiber as filler. The method used in the manufacture of composites is the method of extrusion. The matrix form of the used polypropylene mixed with coconut fiber powder that has been soaked with NaOH, then mixed in a container, then put into the extruder operating temperature 1750C, printed using a hot press at a temperature of 1750C, and cut into pieces appropriate testing. The results showed that the optimum processing occurs with NaOH for 2 days. The FTIR test result, showed that –OH cluster switch occured, be seen from the shifting of absortion band from 3417.04 cm-1 to 3476.84 cm-1 for the powdered coconut fiber and the shifting of absortion band from 3343.75 cm-1 to 3192.33 cm-1 for the composite, which is the –OH cluster of the lignin.
KARAKTERISTIK FOURIER TRANSFORM INFRA RED DAN KEKUATAN BENTUR KOMPOSIT POLIESTER TAK JENUH BERPENGISI ABU SEKAM PADI PUTIH Caroline Oktaviana Hutagalung; Maulida
Jurnal Teknik Kimia USU Vol. 3 No. 1 (2014): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (249.356 KB) | DOI: 10.32734/jtk.v3i1.1497

Abstract

This study was aimed to investigate the effect of white rice husk ash as filler in Fourier Transform Infra Red (FTIR) caractheristic and impact strength of polyester composites. The composites were made with open mixing method by mixing unsaturated polyester with white rice husk ash with the composition of each fillers of 5,10, 15, and 20 % (w/w) then added with 1% methyl ethyl ketone peroxide as catalizer. The parameters which was carried on the prepared samples was characteristic of FTIR and impact strength. It was found that impact strength increased at each of composition of fillers white rice husk ash (WRHA). The optimum value of unsaturated polyester composite filled WRHA are 7031 J/m2 and 8297,333 J/m2 for particle size maximum 100 and 250 mesh.
PENGARUH UKURAN PARTIKEL DAN KOMPOSISI ABU SEKAM PADI HITAM TERHADAP SIFAT KEKUATAN TARIK KOMPOSIT POLIESTER TIDAK JENUH Rotua Adryani; Maulida
Jurnal Teknik Kimia USU Vol. 3 No. 4 (2014): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.935 KB) | DOI: 10.32734/jtk.v3i4.1653

Abstract

This research was aimed to investigate the effect of black rice husk ash particle size and black rice husk ash composition as filler in tensile strength of unsaturated polyester composites. The composites were made with open mixing method by mixing unsaturated polyester with black rice husk ash with particle size variation of 100 mesh and 250 mesh, and volume fraction ratio between filler and matrix 95/5 : 90/10 : 85/15 : 80/20 then added with 1% methyl ethyl ketone peroxide as catalizer into mixture of unsaturated polyester and black rice husk ash. Tests performed are tensile, elongation at break, and Young’s modulus. The result of obtained at a ratio 95/5 with a particle size of 100 and 250 mesh was 24,413 MPa and 24,689 MPa.
Co-Authors Caroline Oktaviana Hutagalung Fitriah Sari Nst Harry Abrido S Johannes Leonard S Rotua Adryani