Pengaruh Konsentrasi Katalis Kalium Karbonat pada Proses Depolimerisasi Limbah Botol Plastik Polietilen Tereftalat (PET)

Rosidatul Mahmudah Setyowati, Lukman Atmaja
Submission Date: 2012-07-31 11:47:07
Accepted Date: 2013-01-17 08:30:01

Abstract


Proses depolimerisasi limbah botol plastik polietilen tereftalat (PET) berhasil dilakukan dengan melalui metode glikolisis dengan pereaksi etilen glikol dan katalis kalium karbonat. Glikolisis dilakukan selama 8 jam pada suhu 196°C. Katalis kalium karbonat divariasi melalui perbandingan mol PET:katalis. Perbandingan mol PET(unit berulang):katalis yang digunakan adalah sebesar 88:1, 78:1, 68:1, 58:1, 48:1, 38:1, 28:1 dan 18:1. Hasil PET yang berhasil terkonversi maksimal menjadi bis(hidroksietil) terftalat (BHET) dilaporkan pada perbandingan mol PET:katalis 28:1 yaitu sebesar 55,95%. BHET dari perbandingan mol 28:1 tersebut diidentifikasi menggunakan FTIR untuk mengkonfirmasi gugus-gugus OH, C-O dan C=O. Titik leleh BHET sebesar 109,98°C didapatkan melalui analisis DSC/TGA.

Keywords


BHET; Depolimerisasi; Glikolisis; Kalium Karbonat; PET

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