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All Journal Indonesian Journal of Chemical Science Jurnal Scientia Indonesia
Pebriyanti, Dita
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education

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The Influence of Stannous Octoat Concentration as Catalyst on Poly Lactic Acid Synthesis from Banana Peel Waste (Musa Paradisiaca Linn) Pebriyanti, Dita; Azwar, Edwin; Darni, Yuli
Indonesian Journal of Chemical Science Vol 10 No 1 (2021)
Publisher : Universitas Negeri Semarang

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Abstract

One of the biopolymers currently being researched is Poly lactic Acid (PLA). This is due to its high biodegradability so that it is classified as an environmentally friendly polymer. This study aims to obtain the best catalyst concentration and polymerization time of lactic acid in obtaining a high yield of poly lactic acid. PLA made in this study uses lactic acid from the raw material of Kepok banana peel waste. The polymerization of lactic acid into poly lactic acid was carried out using the Ring Opening Polymerization method. Where the stannous octoate catalyst concentrations varied were 5%, 6% and 7% and the reaction time was 80 minutes, 100 minutes and 120 minutes. The analysis used is functional group analysis using Fourier Transform Infra-Red Spectroscopy, melting point test with Difference Scanning Calorymetry and Scanning Electron Microscope test. The results showed that, the values ​​of transition glass and transition melting were obtained, namely 60.5oC and 115.4oC, respectively. The highest amount of poly lactic acid was obtained from the addition of 7% catalyst and polymerization time of 120 minutes, with a yield of 47.442%.
The Influence of Stannous Octoat Concentration as Catalyst on Poly Lactic Acid Synthesis from Banana Peel Waste (Musa Paradisiaca Linn) Pebriyanti, Dita; Azwar, Edwin; Darni, Yuli
Indonesian Journal of Chemical Science Vol 10 No 1 (2021)
Publisher : Universitas Negeri Semarang

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

Abstract

One of the biopolymers currently being researched is Poly lactic Acid (PLA). This is due to its high biodegradability so that it is classified as an environmentally friendly polymer. This study aims to obtain the best catalyst concentration and polymerization time of lactic acid in obtaining a high yield of poly lactic acid. PLA made in this study uses lactic acid from the raw material of Kepok banana peel waste. The polymerization of lactic acid into poly lactic acid was carried out using the Ring Opening Polymerization method. Where the stannous octoate catalyst concentrations varied were 5%, 6% and 7% and the reaction time was 80 minutes, 100 minutes and 120 minutes. The analysis used is functional group analysis using Fourier Transform Infra-Red Spectroscopy, melting point test with Difference Scanning Calorymetry and Scanning Electron Microscope test. The results showed that, the values ​​of transition glass and transition melting were obtained, namely 60.5oC and 115.4oC, respectively. The highest amount of poly lactic acid was obtained from the addition of 7% catalyst and polymerization time of 120 minutes, with a yield of 47.442%.
Pengaruh Jumlah Katalis Stannous Oktoat Pada Pembuatan Poli Asam Laktat dari Limbah Kulit Pisang (Musa Paradisiaca Linn) Pebriyanti, Dita
Jurnal Scientia Indonesia Vol 1, No 2 (2015): October 2015
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jsi.v1i2.29402

Abstract

Poly lactic acid yang dibuat pada penelitian ini menggunakan asam laktat dari bahan baku limbah kulit pisang kepok. Polimerisasi asam laktat menjadi poli asam laktat dilakukan dengan menggunakan metode ring opening polymerization. Penelitian ini bertujuan untuk mendapatkan konsentrasi katalis dan waktu polimerisasi asam laktat terbaik dalam mendapatkan yield poli asam laktat yang tinggi. Dimana konsentrasi katalis stannous oktoat yang divariasikan adalah 5%, 6% dan 7% dan waktu reaksi 80 menit, 100 menit dan 120 menit. Analisis yang digunakan yaitu analisis gugus fungsi dengan menggunakan Fourier Transform Infra Red Spektroscopy (FTIR), Uji titik leleh dengan Difference Scanning Calorymetry  dan uji Scanning Electron Microscope. Hasil uji FTIR diperoleh Poly Lactic Acid memiliki gugus –OH, hal ini menunjukkan  bahwa bahan baku adalah murni atau memiliki pengotor yang sedikit sehingga diperoleh PLA yang memiliki sifat yang sesuai dan tidak jauh berbeda dari standardnya. Untuk uji titik leleh didapatkan nilai transition glass dan transition melting berturut-turut yaitu 60,5oC dan 115,4oC. Jumlah poli asam laktat terbanyak diperoleh dari penambahan katalis 7% dan waktu polimerisasi 120 menit, yakni dengan yield  47,442%.Kata kunci: Kulit Pisang, Poli Asam Laktat, Polimerisasi Pembukaan Cincin.
Co-Authors Azwar, Edwin Yuli Darni