Effect of Natural Glyceryl Tributyrate as Plasticizer and Compatibilizer on the Performance of Bio-Based Polylactic Acid/poly(3-hydroxybutyrate) Blends

Iglesias-Montes, Magdalena L.; D'amico, David Alberto; Manfredi, Liliana Beatriz; Cyras, Viviana P.

doi:10.1007/s10924-019-01425-y

Cited by 31 publications

(25 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, similar to PLA, PHB, and other sclPHAs show in general low ductility and flexibility. Blending and addition of plasticisers was widely investigated to improve the mechanical properties of sclPHA towards packaging applications [276][277][278]. While some efforts resulted in a material with improved toughness, ductility, and water properties [278], it is hard to overcome the intrinsic aging effect based on secondary crystallisation, as well as slow crystallisation rate, resulting in easy fracture of the material [279].…”

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

“…Blending and addition of plasticisers was widely investigated to improve the mechanical properties of sclPHA towards packaging applications [276][277][278]. While some efforts resulted in a material with improved toughness, ductility, and water properties [278], it is hard to overcome the intrinsic aging effect based on secondary crystallisation, as well as slow crystallisation rate, resulting in easy fracture of the material [279]. There are some reports which suggest that certain plasticisers, such as tri(ethylene glycol) bis(2-ethylhexanoate), triethyl citrate, and tributyl citrate, have no or even negative effects on the mechanical performance of PHB [276].…”

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

“…Several mechanisms, including a random thermal degradation, auto accelerated transesterification and chain scission from crotonate chain ends seem to be responsible for this behaviour [280]. Inclusion of 3-hydroxyvalerate (PHBV) and 3-hydroxyhexanoate (PHBH) during biosynthesis [281,282], the addition of low molecular weight polypropylene glycol [283] or polyethylene glycol [284], blending with other polymers [278,285], and cross-linking [286] are some of the strategies used to improve the thermal processability of PHB. The addition of PEG1000 to PHBV-based matrices significantly lowered the stiffness of films which also became more extensible, thermo resistant, improved regarding water vapour permeability, and more resistance to aging [287].…”

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

See 2 more Smart Citations

Recent Advances in Bioplastics: Application and Biodegradation

et al. 2020

View full text Add to dashboard Cite

The success of oil-based plastics and the continued growth of production and utilisation can be attributed to their cost, durability, strength to weight ratio, and eight contributions to the ease of everyday life. However, their mainly single use, durability and recalcitrant nature have led to a substantial increase of plastics as a fraction of municipal solid waste. The need to substitute single use products that are not easy to collect has inspired a lot of research towards finding sustainable replacements for oil-based plastics. In addition, specific physicochemical, biological, and degradation properties of biodegradable polymers have made them attractive materials for biomedical applications. This review summarises the advances in drug delivery systems, specifically design of nanoparticles based on the biodegradable polymers. We also discuss the research performed in the area of biophotonics and challenges and opportunities brought by the design and application of biodegradable polymers in tissue engineering. We then discuss state-of-the-art research in the design and application of biodegradable polymers in packaging and emphasise the advances in smart packaging development. Finally, we provide an overview of the biodegradation of these polymers and composites in managed and unmanaged environments.

show abstract

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

Section: Polyhydroxyalkanoatesmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Bioplastics: Application and Biodegradation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…of PHB in the blend prepared by dry‐blending. The crystallinity increased because the PHB facilitates the crystallization of PLA amorphous regions 33,35 . Even higher crystallinity was obtained for extruded samples, 40 and 49% for 15 and 25% wt.…”

Section: Resultsmentioning

confidence: 96%

“…The glass transition temperature ( T g ) of the polymeric blends showed small decreases compared to neat PLA. This reduction could be related to the partial miscibility of PHB and PLA 33 . T g can be affected by different factors, including molecular characteristics, composition, and compatibility between the components 34 .…”

Section: Resultsmentioning

confidence: 99%

Influence of the blending method over the thermal and mechanical properties of biodegradable polylactic acid/polyhydroxybutyrate blends and their wood biocomposites

Pérez‐Fonseca

Herrera-Carmona

González‐García

et al. 2021

Polymers for Advanced Techs

View full text Add to dashboard Cite

This study focused on the effect of the processing method on the thermal, mechanical, and biodegradation properties of polylactic acid/polyhydroxybutyrate (PLA/PHB) blends and their wood biocomposites. The blending techniques were dry‐blending or twin‐screw extrusion, both followed by compression molding. PLA/PHB blends were prepared using 15 and 25% wt. of PHB and biocomposites with 20 and 30% wt. of wood particles. Moreover, a compatibilizer was used during the extrusion process to achieve better matrix‐fiber adhesion. The results showed that the crystallinity of PLA significantly increased with PHB and wood, especially after twin‐screw extrusion. The best results in tensile, flexural, and impact strength were obtained with the extruded and compatibilized PLA/PHB blends, with values higher than the neat biopolymers. The compatibilized biocomposite with 15% wt. PHB, and 20% wt. wood particles showed higher tensile, flexural, and impact properties than PLA. The biodegradation test showed that all samples were disintegrated (above 40%) after 40 days in compost medium, observing slight decreases in the biodegradation rate when PHB or wood particles were added. Even when the lower mechanical properties were obtained with the dry‐blending technique, they are still competitive for different applications, providing the possibility to produce blends and biocomposites, avoiding the extrusion process that requires more energy consumption and longer processing times.

show abstract