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Suryani, Suryati
Politeknik Negeri Lhokseumawe
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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PERBANDINGAN KETEBALAN FILLER TERHADAP KEKUATAN FLEKSURAL DAN IMPACK PADA KOMPOSIT YANG DIBUAT DARI LIMBAH TERMOPLASTIK PET, PP, DAN PE Suryani, Suryati; Zulnazri, Zulnazri
Jurnal Sains dan Teknologi Reaksi Vol 11, No 2 (2013): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v11i2.160

Abstract

Penelitian ini melaporkan tentang perbandingan kekuatan fleksural dan impack terhadap komposit Polietilenateraptalat (PET), Polipropilen (PP) dan Polietilen (PE) yang menggunakan filler fiber glass dengan berbagai variabel. Dimana untuk komposit PET menggunakan softenning agent o-klorofenol sedangkan untuk PP dan PE menggunakan waiting agent xilena. Penelitian ini dilakukan dengan menggunakan metode pengepresan dengan hot press, temperatur leleh maksimum yang didapatkan untuk masing-masing bahan termoplastik yaitu PET 265 oC, PP 167 oC, dan PE 135 oC. Nilai fleksural yang terbaik pada masing-masing komposit diperoleh pada PET - 3 lapis serat 533.33 Mpa, PP - 2 lapis serat 566.66 Mpa, dan PE - 2 lapis serat 600,00 Mpa. Untuk uji impact diperoleh nilai terbaik masing-masing pada komposit PET - 3 lapis serat 25,5 Mpa, komposit PP-2 lapis serat 29,5 Mpa, dan komposit PE - 2 lapis serat 21,5 Mpa.Kata kunci : Komposit, Poplietilenteraptalat, Polipropilen, Polietilen, Fiber Glass
PREPARASI BIOKOMPOSIT KOMBINASI POLI ASAM ASAM LAKTAT-POLI KAPROLAKTON DENGAN MENAMBAH CATECHIN DAN KITOSAN SEBAGAI AGEN ANTIBAKTERIPENGOLAHAN Suryani Salim; Teuku Rihayat; Nurhanifa Aidy; Een Setiawati
Jurnal Sains dan Teknologi Reaksi Vol 19, No 02 (2021): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v19i02.2486

Abstract

Polimer biodegradable dipandang sebagai solusi potensial bagi lingkungan yang dihasilkan oleh limbah plastik. PLA adalah salah satu biopolimer yang paling menjanjikan karena monomer diproduksi dari bahan baku terbarukan sehingga tidak beracun. Polikaprolakton (PCL) merupakan polyester yang ideal karena bersifat non toksid, biodagradable dan memiliki sifat termal yang baik dengan suhu degradasi sebesar ±4000C. Selain itu PCL juga dapat dengn mudah digabung dengan polimer lain. Kemampuan PCL bercampur dengan polimer lain melalui proses modifikasi mampu mengatasi kekurangan-kekurangan tersebut. tujuan dari penelitian ini adalah untuk melihat pengaruh penambahan katalis pada pembuatan PLA/PCl-Catechin-Chitosan sebagai bahan baku pembuatan plastik. Penelitian ini dilakukan dengan variasi penambahan ZnO katalis 0,1 % (Acca) dan 0,2 % (Accb). Hasil analisis Berdasarkan analisis stabilitas termal menggunakan Thermogravimetry (TGA) diperoleh suhu dekomposisi pada 380℃ dengan penambahan katalis 0,2% (ACcb). Analisis morfologis menggunakan Scanning Electron Microscopy (SEM) menunjukkan bahwa struktur permukaan PLA adalah dalam bentuk benjolan yang tersebar luas. Semakin banyak konsentrasi katalis tambahan yang digunakan dapat mempengaruhi pembentukan PLA/PCL-Catechin-Chitosan. Kata kunci: poly lactid acid, polikaprolakton, ZnO katalis, catechin, kitosan
Pengaruh Penambahan Saccharomyces Cerevisiae dan Aspergillus Oryzae terhadap Karakteristik Eco-Enzyme serta Pengaplikasiannya dalam Pembuatan Sabun Padat Antiseptik safrida Safrida; Suryani Suryani; Zuhra Amalia
Jurnal Teknologi Vol 23, No 1 (2023): April 2023
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v23i1.3715

Abstract

The production of eco-enzyme usually takes a long time for fermentation, which is three months using natural microbes found in fruit peels. This research is experimental by focusing on accelerating the production of the eco-enzyme using two types of microbes, namely saccharomyces cerevisiae and aspergillus oryzae whose mass is varied by 5 variations, and the fermentation time is set for 20 days. The results showed that the eco-enzyme made by adding microbes had the same characteristics as the natural fermentation eco-enzyme. Furthermore, the eco-enzyme obtained from the research was added as an antiseptic in making solid soap. From the test results, the best inhibitory power was obtained in the eco-enzyme with the addition of saccharomyces cerevisiae as much as 10 g and aspergillus oryzae as much as 25 g. The inhibitory power test was carried out by comparing the number of bacteria present on unwashed hands with hands that had been washed using soap. The test results showed the number of bacteria on unwashed hands was 85 CFU, which were washed using samples with aspergillus oryzae as much as 4 CFU, with saccharomyces cerevisiae as much as 2 CFU, this inhibition is better than commercial antiseptic soap with a total of 8 CFU
Pla-zno nanocomposite paper for antimicrobial packaging application Teuku Rihayat; Suryani Suryani; Adi Saputra Ismi; Nurhanifa Nurhanifa; Shafira Riskina
Jurnal POLIMESIN Vol 17, No 2 (2019): Agustus
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jp.v17i2.1033

Abstract

Many food packages (plastic wrappers) today cannot be broken down by the environment. therefore, it is necessary to add natural substances that can make the food package decompose and be resistant to contamination with bacteria. Development of biodegradable polymers from renewable sources is highly desirable for food preservation and packaging, provided they can be effective as plastics or paper that are currently used in packaging, protecting food against microbial contamination, physical damage and chemical reactions (eg oxidation). Poly lactic acid (PLA) is one of the natural polymers produced by several bacteria that grow in crops rich in carbohydrates (such as sugar beets, corn and others). This research aims to insert ZnO nanoparticles and chitosan into a plastic layer of PLA (poly lactic acid) which can improve the antibacterial properties of the resulting packaging. The method used in making PLA-ZnO-chitosan nanocomposite is the precipitation method and the heating method. PLA-ZnO nanocomposites were obtained by varying ZnO nanoparticles 0.5% by weight, 2% by weight, and 3.5% by weight. The results obtained in SEM images show that nanoparticles are homogeneously distributed on the plastic surface. Antimicrobial tests show nanocomposites work effectively in deactivating E. coli and S. aureus. where it was found that E. coli was more susceptible to this type of nanocomposite, where there was a reduction of 3.4 logs to 3.5% ZnO loading in the PLA layer.       
Co-Authors Adi Saputra Ismi Een Setiawati Hanif, Hanif Nurhanifa Nurhanifa safrida Safrida Shafira Riskina Teuku Rihayat Teuku Rihayat Zuhra Amalia Zulnazri, Z