Enhancement of properties and biodegradability of polybutylene succinate by epoxidized palm oil

Duhaidahwi, Hassan Raheem Hammood Al-; Al-Mulla, Emad A. Jaffar; Ali, Hana’a Addai

doi:10.14382/epitoanyag-jsbcm.2016.1

Cited by 3 publications

(4 citation statements)

References 18 publications

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“…Some petroleum-derived polymers are being currently employed due to their ability to disintegrate in a controlled compost soil such as poly(caprolactone) (PCL), poly(butylene succinate) (PBS), and poly(butylene succinate-coadipate) (PBSA), etc. [1][2][3]. More interestingly, other biopolymers can be obtained from renewable resources as it is the case of polylactide (PLA), prepared by starch fermentation, and polyhydroxyalkanoates (PHAs), obtained from bacterial fermentation [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…VST values were obtained using the B50 method, which stands for an applied force of 50 N and a heating rate of 50 ºC h -1 . Regarding HDT values, samples with dimensions 4x10x80 mm3 , were subjected to a load of 320 g (three-point bending with a distance between supports of 60 mm) and a heating rate of 120 ºC h -1 . Three different measurements of VST and HDT values were carried out and averaged.Dimensional stability was studied by thermomechanical analysis (TMA) in a Q400 TMA analyser from TA Instruments (Delaware, USA).…”

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confidence: 99%

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Reactive toughening of injection-molded polylactide pieces using maleinized hemp seed oil

Quiles-Carrillo

Blanes-Martínez

Muñoz

et al. 2018

European Polymer Journal

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The present study describes the effect of maleinized hemp seed oil (MHO) on the physical performance of polylactide (PLA) pieces. To this end, PLA pieces with varying MHO contents in the 0-10 wt% range were manufactured by twin-screw extrusion (TSE) followed by injection molding. The resultant pieces were characterized in terms of their mechanical, thermal, and thermomechanical properties. The obtained properties suggested that, unlike typical plasticizers, MHO does not only induce an increment in elongation at break and impact strength but it also enhances both elastic modulus and tensile strength. In addition, it was observed a moderate decrease in the glass transition temperature (Tg). This was ascribed to a linear chain extension and/or branching phenomenon due to the reaction of the multiple maleic anhydride (MAH) groups present in MHO with the hydroxyl groups of the PLA terminal chains. Furthermore, morphology characterization revealed that, though certain phase separation occurred at its highest content, MHO was finely dispersed as submicron droplets within the PLA matrix contributing to improving toughness. The use of multi-functionalized reactive oils thus represents a highly sustainable solution to reduce the intrinsic brittleness of PLA materials without compromising their mechanical resistance and the toughened biopolymer pieces described herein can find interesting applications in, for instance, rigid packaging.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Reactive toughening of injection-molded polylactide pieces using maleinized hemp seed oil

Quiles-Carrillo

Blanes-Martínez

Muñoz

et al. 2018

European Polymer Journal

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“…It has similar properties to some commodity plastics, and its price is continuously becoming cheaper. These properties lead PLA to a very close-to-market position in comparison to other petroleum-based and biodegradable polymers, such as poly(butylene succinate) (PBS), poly(ε-caprolactone) (PCL), and poly(butylene adipate- co -terephthalate) (PBAT) [ 2 , 3 , 4 ], as well as other biobased and biodegradable polymers such as thermoplastic starch, poly(hydroxyalkanoates) (PHAs), protein-based polymers, and so on [ 5 , 6 , 7 , 8 ]. Nevertheless, PLA is a highly brittle polymer with very low toughness.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing and Characterization of Toughened Poly(lactic acid) (PLA) Formulations by Ternary Blends with Biopolyesters

et al. 2017

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Ternary blends with a constant poly(lactic acid) (PLA) content (60 wt %) and varying amounts of poly(3-hydroxybutyrate) (PHB) and poly(ε-caprolactone) (PCL) were manufactured by one step melt blending process followed by injection moulding, with the main aim of improving the low intrinsic toughness of PLA. Mechanical properties were obtained from tensile and Charpy impact tests. The miscibility and morphology of the system was studied by thermal analysis and field emission scanning electron microscopy (FESEM). The obtained results showed a clear phase separation, thus indicating poor miscibility between these three biopolyesters, i.e., PLA, the continuous component with dispersed PHB and PCL domains in the form of different sphere size. Nevertheless, the high fragility of PLA was remarkably reduced, as detected by the Charpy impact test. In accordance with the decrease in brittleness, a remarkable increase in elongation at break is achieved, with increasing PCL load due to its flexibility; in addition, increasing PCL load provides thermal stability at high temperatures. Thus, tailored materials can be manufactured by melt blending PLA, PHB, and PCL in different percentages to offer a wide range of biodegradable polymer blends.

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“…The Se(VI)/(IV) reaction was investigated by cyclic voltammetry to find the oxidation-reduction potential as in the following reaction [18]: Selenium nanoparticles were deposited on working electrode using cyclic voltammetric technique to study specific capacitance of 21.98 Fg -1 with 91% electrochemical stability [19].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical study of selenium (IV) mediated by carbon nanotubes modified glassy carbon electrode in blood medium

Radhi¹,

AL-Dulimy²,

Khalaf³

2016

Epitoanyag - JSBCM

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sodium selenite se(iv) was studied by cyclic voltammetric technique to identify the extent of its effect on both normal saline and blood medium components as oxidative or antioxidative reagent. carbon nanotube (cnt) was used to modify glassy carbon electrode (Gce) for the enhancement of redox current peaks. it was found from the results of the study that reduction current peak of se(iv) in blood medium appears at -1v in 0.1 mm of sodium selenite, but the reduction current peak disappears when adding more amount of se(iv) to the blood which causes enhancement of the oxidation current peak of se(iv) at 0.25 v in 10 mm of sodium selenite. Ascorbic acid (AA) was affected on the redox current peaks of se(iv) in blood medium that enhanced the cathodic current peak and disappearing the anodic current peak. so sodium selenite considered as antioxidative material at low concentration in blood medium and become oxidative in high concentration especially in presence of AA. keywords: cyclic voltammetry, carbon nanotube, glassy carbon electrode, blood medium, sodium selenite, normal saline

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Enhancement of properties and biodegradability of polybutylene succinate by epoxidized palm oil

Cited by 3 publications

References 18 publications

Reactive toughening of injection-molded polylactide pieces using maleinized hemp seed oil

Reactive toughening of injection-molded polylactide pieces using maleinized hemp seed oil

Manufacturing and Characterization of Toughened Poly(lactic acid) (PLA) Formulations by Ternary Blends with Biopolyesters

Electrochemical study of selenium (IV) mediated by carbon nanotubes modified glassy carbon electrode in blood medium

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