The effect of catalyst concentration in poly lactic acid synthesis from L-lactide using Candida rugosa lipase and DMA (dimethylacetamide) solvent through ring-opening polymerization (ROP)

Cynthia Laurent Santoso, Catia Angli Curie, Yusuf Arya Ramadhan, Muhammad Arif Darmawan, Misri Gozan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Poly Lactic Acid (PLA) is a polymer that can be used as an alternative to fossil-based plastics. PLA is the right solution because of its biodegradability, biocompatibility, mechanical strength, and processability. PLA synthesis process is more often carried out using the Ring-Opening Polymerization (ROP) pathway since it allows to produce a high molecular weight PLA. This study used Candida rugosa lipase as a green catalyst and DMA (Dimethylacetamide) as the solvent in the ROP of L-lactide. The observations were made by varying the catalyst ratio at 2, 5, and 10% w/w. The obtained PLA was characterized using H-NMR (H Nuclear Magnetic Resonance) to estimate the average number molecular weight (Mn) and monomer conversion, and GPC (Gel Permeation Chromatography) was also used to determine the number average and weight average molecular weight (Mn and Mw) of the PLA. It was found that the optimal catalyst ratio when the polymerization was performed at 80? for 3 days was 5%w/w.

Original languageEnglish
Title of host publicationProceedings of the 7th International Symposium on Applied Chemistry 2021
EditorsMuhammad Al Muttaqii, Kiki Kurniawan, Muhammad Hanafi, Ahmad Randy
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735442658
DOIs
Publication statusPublished - 5 Dec 2022
Event7th International Symposium on Applied Chemistry 2021, ISAC 2021 - Virtual, Online
Duration: 28 Sept 202130 Sept 2021

Publication series

NameAIP Conference Proceedings
Volume2493
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference7th International Symposium on Applied Chemistry 2021, ISAC 2021
CityVirtual, Online
Period28/09/2130/09/21

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