PRODUKSI POLI ASAM LAKTAT DARI LIMBAH AMPAS PATI AREN

Authors

  • Sari Purnavita Teknik Kimia, Akademi Kimia Industri Santo Paulus Semarang
  • Herman Yoseph Sriyana Teknik Kimia, Akademi Kimia Industri Santo Paulus Semarang
  • Sri Hartini Jurusan Kimia, Fakultas Sains dan Matematika, Universitas Kristen Satya Wacana

DOI:

https://doi.org/10.36499/jim.v13i1.1760

Abstract

Poli asam laktat (PLA) yang dibuat pada penelitian ini menggunakan asam laktat dari bahan baku limbah ampas pati aren. Polimerisasi asam laktat menjadi poli asam laktat (PLA) dilakukan dengan metode ring opening polymerizaton pada suhu 170○C dan tekanan 152 mmHg. Variabel pada proses polimerisasi adalah  katalis Sn (II) Oct sebanyak 3%, 4%, 5% dan waktu reaksi 45 menit, 60 menit, 90 menit. Kristal PLA diperoleh dengan diendapkan menggunakan metanol dan selanjutnya dilakukan analisis termal dan yield. PLA hasil penelitian memiliki karakteristik termal (melting temperature dan glass transition temperature) tertinggi diperoleh pada katalis Sn (II) Oct 5% dan waktu reaksi 90 menit, berturut-turut yaitu 149◦C dan 61◦C. Jumlah poli asam laktat terbanyak diperoleh dari perlakuan penambahan katalis 5% dan waktu polimerisasi 90 menit, yaitu dengan yield 26,77%. 

Kata kunci : ampas pati aren, poli asam laktat

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Published

2017-07-07

Issue

Vol. 13 No. 1 (2017)

Section

Articles

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