Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters
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 du...
| Main Authors: | , , , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
Faculty of Computer Science and Information Technology, Universiti Putra Malaysia
2015
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/77174/ http://psasir.upm.edu.my/id/eprint/77174/1/saes2015-34.pdf |
| _version_ | 1848858175443304448 |
|---|---|
| author | Rajaratanam, Dhurga Devi Ariffin, Hidayah Nishida, Haruo Hassan, Mohd Ali |
| author_facet | Rajaratanam, Dhurga Devi Ariffin, Hidayah Nishida, Haruo Hassan, Mohd Ali |
| author_sort | Rajaratanam, Dhurga Devi |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-15T12:09:16Z |
| format | Conference or Workshop Item |
| id | upm-77174 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:09:16Z |
| publishDate | 2015 |
| publisher | Faculty of Computer Science and Information Technology, Universiti Putra Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-771742020-03-04T06:56:06Z http://psasir.upm.edu.my/id/eprint/77174/ Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters Rajaratanam, Dhurga Devi Ariffin, Hidayah Nishida, Haruo Hassan, Mohd Ali 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. Faculty of Computer Science and Information Technology, Universiti Putra Malaysia 2015 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/77174/1/saes2015-34.pdf 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). |
| spellingShingle | Rajaratanam, Dhurga Devi Ariffin, Hidayah Nishida, Haruo Hassan, Mohd Ali Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters |
| title | Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters |
| title_full | Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters |
| title_fullStr | Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters |
| title_full_unstemmed | Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters |
| title_short | Evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters |
| title_sort | evaluation of degradation products and kinetics of poly(3-hydroxybytyrate-co-3-hydroxyhexanoate) superheated steam hydrolysis for the production of biocompatible oligoesters |
| url | http://psasir.upm.edu.my/id/eprint/77174/ http://psasir.upm.edu.my/id/eprint/77174/1/saes2015-34.pdf |