Preparation of thermoplastic starch
Апстракт
Native starch and WX-starch, i.e., native starch enriched with amylopectin, were mixed with plasticizers and thermomechanically treated in a twin screw mixer in order to obtain thermoplastic starch. Ethylene glycol, propane tricl (glycerine) or poly(ethylene glycol) with a molar mass less than 1000 g/mol were used as plasticizers. Transformation to thermoplastic starch was only successful when glycerine or ethylene glycol were used as the plasticizers, the temperature of the thermomechanical treatment being dependent on the plasticizer and starch used. Rheological properties of the obtained thermoplastic starch were determined using a mechanical spectrometer. As a result of these measurements, the complex viscosity (η*), shear moćulus of stored (G') and of lost energy (G'') were obtained as a function of frequency at constant temperature. The measurements were performed at three temperatures: 140, 170 and 210°C. The results obtained showed that the thermoplastic starch behaved like a t...ypical thermoplastic polymer.
Кључне речи:
Preparation / Theological properties / Thermoplastic starchИзвор:
Journal of the Serbian Chemical Society, 1997, 62, 8, 623-629Издавач:
- Serbian Chemical Society, Belgrade
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Jovanović, Slobodan AU - Jeremić, Katarina B. AU - Jovanović, Renata AU - Đonlagić, Jasna AU - Dunjić, Branko PY - 1997 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/115 AB - Native starch and WX-starch, i.e., native starch enriched with amylopectin, were mixed with plasticizers and thermomechanically treated in a twin screw mixer in order to obtain thermoplastic starch. Ethylene glycol, propane tricl (glycerine) or poly(ethylene glycol) with a molar mass less than 1000 g/mol were used as plasticizers. Transformation to thermoplastic starch was only successful when glycerine or ethylene glycol were used as the plasticizers, the temperature of the thermomechanical treatment being dependent on the plasticizer and starch used. Rheological properties of the obtained thermoplastic starch were determined using a mechanical spectrometer. As a result of these measurements, the complex viscosity (η*), shear moćulus of stored (G') and of lost energy (G'') were obtained as a function of frequency at constant temperature. The measurements were performed at three temperatures: 140, 170 and 210°C. The results obtained showed that the thermoplastic starch behaved like a typical thermoplastic polymer. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Preparation of thermoplastic starch EP - 629 IS - 8 SP - 623 VL - 62 UR - https://hdl.handle.net/21.15107/rcub_technorep_115 ER -
@article{ author = "Jovanović, Slobodan and Jeremić, Katarina B. and Jovanović, Renata and Đonlagić, Jasna and Dunjić, Branko", year = "1997", abstract = "Native starch and WX-starch, i.e., native starch enriched with amylopectin, were mixed with plasticizers and thermomechanically treated in a twin screw mixer in order to obtain thermoplastic starch. Ethylene glycol, propane tricl (glycerine) or poly(ethylene glycol) with a molar mass less than 1000 g/mol were used as plasticizers. Transformation to thermoplastic starch was only successful when glycerine or ethylene glycol were used as the plasticizers, the temperature of the thermomechanical treatment being dependent on the plasticizer and starch used. Rheological properties of the obtained thermoplastic starch were determined using a mechanical spectrometer. As a result of these measurements, the complex viscosity (η*), shear moćulus of stored (G') and of lost energy (G'') were obtained as a function of frequency at constant temperature. The measurements were performed at three temperatures: 140, 170 and 210°C. The results obtained showed that the thermoplastic starch behaved like a typical thermoplastic polymer.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Preparation of thermoplastic starch", pages = "629-623", number = "8", volume = "62", url = "https://hdl.handle.net/21.15107/rcub_technorep_115" }
Jovanović, S., Jeremić, K. B., Jovanović, R., Đonlagić, J.,& Dunjić, B.. (1997). Preparation of thermoplastic starch. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 62(8), 623-629. https://hdl.handle.net/21.15107/rcub_technorep_115
Jovanović S, Jeremić KB, Jovanović R, Đonlagić J, Dunjić B. Preparation of thermoplastic starch. in Journal of the Serbian Chemical Society. 1997;62(8):623-629. https://hdl.handle.net/21.15107/rcub_technorep_115 .
Jovanović, Slobodan, Jeremić, Katarina B., Jovanović, Renata, Đonlagić, Jasna, Dunjić, Branko, "Preparation of thermoplastic starch" in Journal of the Serbian Chemical Society, 62, no. 8 (1997):623-629, https://hdl.handle.net/21.15107/rcub_technorep_115 .