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Misri Gozan
Departemen Teknik Kimia - UI Kampus Baru UI, Depok
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

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Journal : World Chemical Engineering Journal

 1 
Effect of Polycondensation Temperature to Oligomer yield and Depolimerisation Side Reaction Rahmayetty, Rahmayetty; Sukirno, Sukirno; Gozan, Misri
World Chemical Engineering Journal VOLUME 2 NO. 1 JUNE 2018
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v2i1.3467

Abstract

Ring-opening polymerization reaction is the best method for producing high molecular weight polymers. The stage of manufacture of PLA from lactic acid through the lactide ring opening reaction is carried out through three stages of the process ie polycondensation, depolymerization and polymerization. The polycondensation stage of lactic acid is the stage of oligomer formation. At the polycondensation stage, the oligomeric molecular weight is determined by the temperature, pressure, type and concentration of the catalyst used. The purpose of this research was to obtain the effect of polycondensation temperature without catalyst on oligomer recovery and side reactions of depolymerization. Polycondensation is done by pretreatment of lactic acid at 120oC for 1 hour. After that, the heating lactic acid at varying temperatures..OLLA yield at polycondensation temperature 150; 180; 200oC for 4 h and gradually (at 150 oC for 2 h and 180oC for 2 h) were 96.33; 85.36; 82.13 and 88.37% respectively. The higher  polycondensation temperature, the intramolecular interactions of the molecule as a side reaction was increasing.
Co-Authors -, Abdurachman Abdul Haris Achmadin L. Machsun Ahmad Fauzantoro Amelia, Fanny Andre Fahriz Perdana HARAHAP Andre Fahriz Perdana Harahap Andri Pramesyanti Pramono Anondho Wijanarko Anondho Wijanarko Anton Irawan Arief Budi Witarto Arif Rahman Bambang Heru Susanto, Bambang Heru Bambang Prasetya Bambang Prasetya Bambang Prasetya Basra Ahmad Amru Cut Nanda D. R. Barleany Dedy Alharis Nasution, Dedy Alharis Denia Apriliani RAHMAN Dianursanti Endang Suhendi, Endang Eny Kusrini Faikul Umam Fajriati Zulfa Fita Sefriana Galih Rineksa Halimah Anggi Rahmani Hardi Putra Harijanto, Fransiskus Xaverius Ray Setiadharma Haris, Abdul Haryoto Kusnoputranto Heri Hermansyah Heri Hermansyah Heriyanti Huwaida, Ariqah Iffah Izzah Nur Fatimah Josia Simanjuntak Kazuhiro Asami Kazuhisa Ohtaguchi Kitakawa, Naomi Shibasaki Kori Yati Kori Yati Lischer, Kenny Lusi Dwita Lusi Putri Dwita M Baiquni M Baiquni M Baiquni M Samsuri M Samsuri, M M. Baiquni Mahdi Jufri Mardias, R. Mardiastuti Mardiastuti Mardiastuti Wahid Marito, Olivia Yolanda Maya Lukita, Maya Meiskha Bahar Mochamad Yusuf Efendi, Mochamad Yusuf Mohammad Mohammad Mohammad Nasikin Mohammad Nasikin Momoji Kubo, Momoji Muhammad Arif Darmawan Muhammad Yusuf Arya Ramadhan Mujtahid Imaduddin Nurahman Muryanto Muryanto Muryanto, Muryanto Nadia Chrisayu Natasha Nanda, Cut Naomi Shibasaki-Kitakawa, Naomi Nasihin Saud Irsyad Nasikin, M. Nizar Amir Nur Fatimah, Izzah Oktania Sandra Puspita Penjit Srinophakun Praswasti P. D.K Wulan, Praswasti P. D.K Praswasti PDK Wulan Praswasti Wulan, Praswasti Primanti, Afthina R Mardias R Mardias, R Rachmadhi Purwana Rahmayetty Rahmayetty Rahmayetty, Rahmayetty Ramadhan, Varrel Ariasatya Renny S. Mokodongan Renny S. Mokodongan Rita Arbianti Roekmijati Soemantojo, Roekmijati Roekmijati W. Soemantojo, Roekmijati W. Roekmijati Widaningroem Soemantojo Samsuri, M. Setiawan, Mia Sari Sheila Azelya Fernanda Shella Wu, Shella Siswa Setyahadi Siswa Setyahadi Siti Nurbayti Sri Budi Harmami Sukirno Sukirno Sukirno Sukirno Tania Surya Utami Teguh Wikan Widodo, Teguh Wikan Toshiy Yonemoto, Toshiy Wahyu, Fiki Milatul Wijanarko, A. Yanni Sudiyani Yemirta Yemirta Yudan Whulanza Yudhi Nugraha Yuli Panca Asmara Yuliusman Yuliusman Yusraini Dian Inayati Siregar Yustinah Yustinah