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Chaniga Chuensangjun. Biotechnological synthesis of polylactic acid for the production of PLA cellulose compound for injection molding applications. Doctoral Degree(Biotechnology). Kasetsart University. Office of the University Library. : Kasetsart University, 2019.
Biotechnological synthesis of polylactic acid for the production of PLA cellulose compound for injection molding applications
Name: Chaniga Chuensangjun
Classification :.LCCS: TP1180.B55
LCSH:
Polylactic acid
LCSH:
Polymerization
Abstract:
This research aimed to develop a promising eco-friendly PLA cellulose compound production for further benefit in heat-resistant bioplastic materials production. Briefly, the poly(lactic acid) (PLA) production from L-lactide was investigated using lipase-catalyzed ring-opening polymerization (ROP) in dimethyl sulfoxide (DMSO), under mild condition. The PLA-oligomers with the weight average molecular weight (Mw) of 534.5 g/mol and the number average molecular weight (Mn) of 385.0 g/mol, were obtained from the developed process. Whereas, preparation of high crystallinity (6769%) of surface-modified cellulose nanofibers from bagasse bleached pulp (BBP-TOCN) by TEMPO-mediated oxidation and subsequent postoxidation, were studied.
The BBP-TOCN product was further used as the backbone for grafting with PLA-oligomers through ROP reaction in DMSO. The proper condition for cellulose nanofibers-graft-poly(lactic acid) (TOCN-g-PLA) production without initiators and plasticizers was 90100 C and a molar ratio of L-lactide to carboxylate content of BBP-TOCN as 10:1. Subsequently, the twotemperature protocol (140 °C for 15 min followed by 100 °C for 8 h) followed with the addition of PLA-oligomer was developed to enhance covalent bonding with the cellulose nanofibers. The BBP-TOCN-g-PLA with high crystallinity (>76%), a small crystallite size (3.8 nm), good dispersibility in a polar aprotic solvent and high thermal stability was obtained from the developed protocol. The finding results would be expected to find widespread use in the future for biodegradable packaging application, especially in the injection grade PLA cellulose compound production.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Sarote Sirisansaneeyakul
Role:
Thesis Advisor
Name: Takuya Kitaoka
Role:
Thesis Co-Advisor
Created:
2019
Modified:
2025-06-29
Issued:
2025-06-29
วิทยานิพนธ์/Thesis
application/pdf
URL: https://www.lib.ku.ac.th/KUthesis/2562/chaniga-chu-all.pdf
CallNumber:
TP1180.B55 .C42
eng
DegreeName: Doctor of Philosophy
Level: Doctoral Degree
Descipline: Biotechnology
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.022685 วินาที
Chaniga Chuensangjun
| Title | Contributor | Type |
|---|---|---|
| Biotechnological synthesis of polylactic acid for the production of PLA cellulose compound for injection molding applications
มหาวิทยาลัยเกษตรศาสตร์ Chaniga Chuensangjun | Sarote Sirisansaneeyakul Takuya Kitaoka | วิทยานิพนธ์/Thesis |
Sarote Sirisansaneeyakul
| Title | Creator | Type and Date Create |
|---|---|---|
| Optimal Fed-Batch Control of Xylitol Production
มหาวิทยาลัยเกษตรศาสตร์ Sarote Sirisansaneeyakul | Worasit Tochampa | วิทยานิพนธ์/Thesis |
| Prediction and assimilation of the salmonella growth in stirred fried rice with crab met
มหาวิทยาลัยเชียงใหม่ Niyatat Poosaran;Sarote Sirisansaneeyakul;Sittisin Bovonsombut;Prasert Hanmoungjai;Sasitorn Wongroung | Songamnat Pongsomboon | วิทยานิพนธ์/Thesis |
| Control of membrane-attached biofilms in membrane bioreactors
มหาวิทยาลัยเชียงใหม่ Naiyatat Poosaran;Pyle, David Leo;Tapana Cheunbarn;Suphawat Sinsuwongwat;Sarote Sirisansaneeyakul | Ampin Kuntiya | วิทยานิพนธ์/Thesis |
| Enzymatic production of cyclodextrins from sago starch
มหาวิทยาลัยมหิดล Sittiwat Lertsiri;Saovanee Dharmmasthiti;Sarote Sirisansaneeyakul | Nisanart Charoenlap | วิทยานิพนธ์/Thesis |
| Biotechnological synthesis of polylactic acid for the production of PLA cellulose compound for injection molding applications
มหาวิทยาลัยเกษตรศาสตร์ Sarote Sirisansaneeyakul;Takuya Kitaoka | Chaniga Chuensangjun | วิทยานิพนธ์/Thesis |
Takuya Kitaoka
| Title | Creator | Type and Date Create |
|---|---|---|
| Biotechnological synthesis of polylactic acid for the production of PLA cellulose compound for injection molding applications
มหาวิทยาลัยเกษตรศาสตร์ Sarote Sirisansaneeyakul;Takuya Kitaoka | Chaniga Chuensangjun | วิทยานิพนธ์/Thesis |