Annealing effect on tensile property and hydrolytic degradation of biodegradable poly(lactic acid) reactive blend with poly(trimethylene terephthalate) by two-step blending procedure

Kultravut, Katanyu; Kuboyama, Keiichi; Ougizawa, Toshiaki

doi:10.1016/j.polymdegradstab.2020.109228

Cited by 15 publications

(7 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 1,3-propanediol part of PTT has also been derived from a renewable resource such as starch. 137 Kultravut et al 138 synthesized a toughened PLA/PTT blend using a reactive compatibilizer (poly(ethylene-co-glycidyl methacrylate) (PEGMA)). The PLA/PTT/PEGMA blend was prepared initially by melt mixing PTT with PEGMA, and then PLA was added.…”

Section: Pla-based Blends and Compositesmentioning

confidence: 99%

“…Higher melting crystals and more perfect crystals are produced when annealing is done for extended times. 189 Kultravut et al 138 studied the effect of annealing in a PLA/PTT blend in the presence of a reactive compatibilizer and observed that the hydrolytic instability or degradation was controlled. Thermal annealing above T g resulted in the fabrication of a polylactide/ ethylene−acrylic EGMA terpolymer elastomer with an impact strength of 94 kJ•m −2 that is 52 times more than that of polylactide.…”

Section: Processabilitymentioning

confidence: 99%

See 1 more Smart Citation

Durable Polylactic Acid (PLA)-Based Sustainable Engineered Blends and Biocomposites: Recent Developments, Challenges, and Opportunities

2021

View full text Add to dashboard Cite

The paper comprehensively reviews durable polylactic acid (PLA)-based engineered blends and biocomposites supporting a low carbon economy. The traditional fossil fuel derived nonrenewable durable plastics that cannot be circumvented have spawned increased environmental concerns because of the continuous rise of their carbon footprint during processing and disposal. It is anticipated that the production of biodegradable and nonbiodegradable (durable) plastics from the year 2020 to 2025 will rise ∼47% and ∼21%, respectively. The carbon footprint can be reduced in durable (nonrenewable) plastics by decreasing or replacing the “fossil carbon” content with “renewable carbon” content. The replacement will enable us to attain a sustainable environment, a low carbon footprint, energy security, and effective resource management. Thus, PLA-based durable products need to be developed with an enhanced service life that strikes a balance between environment-friendliness and product performance for engineering high-performance applications. The recent progress for enhancing the durability of PLA-based products consisting of hybrid nonrenewable and renewable carbon has been attained by incorporating synthetic plastics, synthetic fibers (glass and carbon), natural fibers, and other biofillers (biocarbon). Further, the effects of additives such as initiators, nucleating agents, chain extenders, compatibilizers, impact modifiers, and toughening agents to prepare such blends and composites have been discussed. This Review further critically examines the advances centering on processability, heat resistance, flame retardancy, strength, and toughness. In addition to that, current and prospective applications such as automotive, electronic, medical, textile, and housing of PLA-based products are discussed. However, the challenges for tailoring durable PLA-based products that still need to be addressed, such as improved processability, striking stiffness–toughness balance, enhanced heat resistance, and improved interfacial adhesion between the polymer–polymer, polymer–filler, and hybrid polymer–filler in respective polymer blends, composites, and hybrid composites, are summarized and analyzed in this Review. Hence, the opportunities for improvement to overcome the challenges lie ahead.

show abstract

Section: Pla-based Blends and Compositesmentioning

confidence: 99%

Section: Processabilitymentioning

confidence: 99%

Durable Polylactic Acid (PLA)-Based Sustainable Engineered Blends and Biocomposites: Recent Developments, Challenges, and Opportunities

2021

View full text Add to dashboard Cite

show abstract

“…To prepare the interfacial localization of the modified filler in cocontinuous immiscible polymer blend, a blend of biobased poly(lactic acid) (PLA) with a partially biobased aromatic polyester, poly(trimethylene terephthalate) (PTT), was adopted based on our previous studies. , Previous results have shown that the tensile properties of the PLA/PTT blend have been significantly enhanced by improved interfacial adhesion between PLA and PTT using a reactive compatibilizer, poly(ethylene- co -glycidyl methacrylate) (PEGMA). The epoxy group of the glycidyl methacrylate (GMA) part in the PEGMA reacted with the end groups of both PLA and PTT, and then, PEGMA was located at the interface between PLA and PTT.…”

Section: Introductionmentioning

confidence: 99%

Localization of Poly(glycidyl methacrylate) Grafted on Reduced Graphene Oxide in Poly(lactic acid)/Poly(trimethylene terephthalate) Blends for Composites with Enhanced Electrical and Thermal Conductivities

Kultravut

Kuboyama

Sedlařík

et al. 2021

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

Interfacial localization of conductive fillers in a cocontinuous immiscible polymer blend is an efficient way of improving the electrical and thermal conductivities of the composite. Conductive path formation at the interface of a cocontinuous structure is expected to provide high conductivity by a smaller amount of the filler, which can be used for applications as conductive materials. In this study, biobased poly(lactic acid) (PLA) was blended with poly(trimethylene terephthalate) (PTT) to make the cocontinuous immiscible polymer blend. Poly(glycidyl methacrylate) (PGMA) was grafted on reduced graphene oxide (rGO) to make a PGMA-grafted rGO (rGO-PGMA). The epoxy group of GMA on rGO-PGMA reacted with the end groups of both PLA and PTT and localized at the interface between PLA and PTT by a two-step blending procedure to form the conductive path between PLA and PTT. From transmission electron microscopy observation, it was found that rGO-PGMA localized between the interface of PLA and PTT. Both electrical and thermal conductivities of the composite were improved, which was confirmed by the electrical volume resistivity and thermal diffusivity measurements, compared with neat polymers and other blends.

show abstract

“…The enhanced mechanical properties may be attributed to the structural perfection in the crystalline phase and cavitation in the amorphous phase during the annealing process. Nevertheless, some research found that the toughening effect of pure polymers is relatively limited, while the effective toughening can be achieved in the case of nanocomposites or polymer blends 20‐22 . Thus, the annealing process should be further optimized to toughen pure polymers (e.g., PHBV).…”

Section: Introductionmentioning

confidence: 99%

Dramatic toughness improvement of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) by supercritical carbon dioxide–assisted annealing

Chen

Mao²,

Zhang

et al. 2021

Polymers for Advanced Techs

View full text Add to dashboard Cite

Supercritical carbon dioxide (scCO2)–assisted annealing process has demonstrated promising prospects in the toughness enhancement of polymers. Herein, this effective method was adopted to toughen a biodegradable polymer, poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV). Significantly, the greatly improved tensile toughness and impact toughness of PHBV were achieved. It is noted that the 26 times enhancement in tensile toughness and 2.4 times improvement in impact toughness were obtained for the sample treated at annealing temperature of 90°C and saturation pressure of 10 MPa. More importantly, the toughness mechanism was further explored via various characterizations. It is indicated that the increment in the toughness of PHBV after scCO2‐assisted annealing was closely related to the perfection of microstructure sample and the appearance of micro‐voids.

show abstract

Annealing effect on tensile property and hydrolytic degradation of biodegradable poly(lactic acid) reactive blend with poly(trimethylene terephthalate) by two-step blending procedure

Cited by 15 publications

References 37 publications

Durable Polylactic Acid (PLA)-Based Sustainable Engineered Blends and Biocomposites: Recent Developments, Challenges, and Opportunities

Durable Polylactic Acid (PLA)-Based Sustainable Engineered Blends and Biocomposites: Recent Developments, Challenges, and Opportunities

Localization of Poly(glycidyl methacrylate) Grafted on Reduced Graphene Oxide in Poly(lactic acid)/Poly(trimethylene terephthalate) Blends for Composites with Enhanced Electrical and Thermal Conductivities

Dramatic toughness improvement of poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) by supercritical carbon dioxide–assisted annealing

Contact Info

Product

Resources

About