Crystallization behavior of poly(lactide)/poly(β-hydroxybutyrate)/talc composites.
Article dans une revue avec comité de lecture
Date
2013Journal
Journal of Applied Polymer ScienceAbstract
The morphology and miscibility of commercial poly(lactide) (PLA)/poly(b-hydroxybutyrate) (PHB, from 5 to 20 wt %) blends prepared by melt extrusion method, were investigated using differential scanning calorimetry (DSC) and Fourier transform infra-red spectroscopy (FTIR) observations. The results show that for all the studied blend contents, PLA/PHB blends are immiscible. The effects of PHB and talc on the nonisothermal cold crystallization kinetics of PLA were examined using a differential scanning calorimetry (DSC) at different heating rates. PHB acted as a nucleating agent on PLA and the addition of talc to the blend yielded further improve-ment, since significant increase in the enthalpy peak was observed for samples containing 10 wt % PHB and talc (from 0.5 to 5 phr). The crystallization kinetics were then examined using the Avrami–Jeziorny and Liu–Mo approach. The simultaneous presence of PHB and talc induced a decrease of the crystallization half time. The evolution of activation energies determined with Kissinger’s equation suggests that blending with PHB and incorporating talc promote nonisothermal cold crystallization of PLA. The synergistic nucleating effect of PHB and talc was also observed on isothermal crystallization of PLA from the melt.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureFERNANDES NASSAR, Samira; GUINAULT, Alain; DELPOUVE, Nicolas; DIVRY, Véronique; DUCRUET, Violette; SOLLOGOUB, Cyrille; DOMENEK, Sandra (Elsevier, 2017)Semicrystalline polylactide (PLA) films with controlled morphology were produced by thermal crystallization to optimize the oxygen barrier properties. The crystalline morphology of PLA at the scales of the lamella and the ...
-
Article dans une revue avec comité de lectureRUELLAN, Alexandre; GUINAULT, Alain; SOLLOGOUB, Cyrille; DUCRUET, Violette; DOMENEK, Sandra (Wiley, 2015)Changes in the thermomechanical properties of polylactide (PLA) plasticized by two biodegradable and biobased molecules, Polysorb ID37 (PID37) and squalene, were compared to formulations with petroleum-based plasticizers, ...
-
Article dans une revue avec comité de lectureRUELLAN, Alexandre; GUINAULT, Alain; SOLLOGOUB, Cyrille; CHOLLET, Guillaume; AIT-MADA, Aziza; DUCRUET, Violette; DOMENEK, Sandra (BME-PT Hungary, 2015)The use of industrial by-products of the vegetable oil industry as ductility increasing additives of polylactide (PLA) was investigated. Vegetable oil deodorization condensates were melt-blended by twin-screw extrusion up ...
-
Article dans une revue avec comité de lectureRUELLAN, Alexandre; DUCRUET, Violette J.; GRATIA, Audrey; SAELICES JIMENEZ, Lidia; GUINAULT, Alain; SOLLOGOUB, Cyrille; CHOLLET, Guillaume; DOMENEK, Sandra (Wiley, 2016)A used-as-shipped biobased and biodegradable by-product of the palm oil refining increases polylactide (PLA) elongation at break up to 130% and allows film blowing without further additives. PLA blends are biodegradable ...
-
Article dans une revue avec comité de lectureMONNIER, Xavier; FERNANDES NASSAR, Samira; DOMENEK, Sandra; GUINAULT, Alain; SOLLOGOUB, Cyrille; DARGENT, Eric; DELPOUVE, Nicolas (Elsevier, 2018)The physical aging behavior of amorphous polylactide constrained against polystyrene in layers of 300 nm, thanks to the layer–multiplying co–extrusion process, was investigated by fast–scanning calorimetry (FSC). By cooling ...