Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters

Citation

Rajaratanam, Dhurga Devi and Ariffin, Hidayah and Nishida, Haruo and Hassan, Mohd Ali (2015) Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters. In: 3rd International Symposium on Applied Engineering and Sciences (SAES2015), 23-24 Nov. 2015, Universiti Putra Malaysia. (pp. 142-144).

Abstract

In order to apply polyhydroxyalkanoate (PHA) as various biomedical materials, controlled hydrolysis of PHAs was conducted using superheated steam (SHS) for the production of oligoesters. Changes in mass and molecular weight of poly (3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) were monitored during the SHS treatment in a range of 130-190 °C. Produced oligoesters were analyzed using 1H and 13C-NMR to determine the chemical structures. Obtained kinetic parameters of degradation and chemical structures of oligoesters revealed that the SHS hydrolysis of PHBHHx preferentially proceeded at HHx*HB sequence and specifically occurred according to the SHS treatment temperatures, resulting in the formation of crotonyl-chain end at temperatures above 170°C.

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Additional Metadata

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Biotechnology and Biomolecular Sciences Institute of Tropical Forestry and Forest Products
Publisher:	Faculty of Computer Science and Information Technology, Universiti Putra Malaysia
Keywords:	Superheated steam; Oligoesters; Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)
Depositing User:	Nabilah Mustapa
Date Deposited:	04 Mar 2020 06:56
Last Modified:	04 Mar 2020 06:56
URI:	http://psasir.upm.edu.my/id/eprint/77174
Statistic Details:	View Download Statistic

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