Toughening of Polylactic Acid: An Overview of Research Progress

Krishnan, Sukhila; Pandey, Priyanka; Mohanty, Smita; Nayak, Sanjay K.

doi:10.1080/03602559.2015.1098698

Cited by 117 publications

(77 citation statements)

References 199 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Young's modulus, stress at yield, and strain at break were evaluated from tensile tests and their evolutions with the amount of PA (by weight) are tabulated in Supporting Information Table S3 and S4 and Figure , respectively. PLA is a brittle polymer with poor ductility (strain at break 3.4%) and high stiffness (Young's modulus 2885 MPa and stress at yield 66.6 MPa) in accordance with many reports on PLA mechanical properties . Mechanical properties of PLA are obviously improved upon blending with PA12HV with a clear brittle‐to‐ductile transition for PA12HV content higher than 30 wt % (Figure ).…”

Section: Resultssupporting

confidence: 85%

“…Mechanical properties of PLA are obviously improved upon blending with PA12HV with a clear brittle‐to‐ductile transition for PA12HV content higher than 30 wt % (Figure ). The strain at break reached a maximal value of approximately 170% in PLA/PA12HV blends with 40‐wt % PA12HV representing a remarkable ductility for a PLA‐based blend at such elevated PLA content . Brittle‐to‐ductile transitions are also observed upon blending other PA but maximal strain only reached 65% for PA10‐10 or PA10‐12 and 90% for PA11 (Figure ).…”

Section: Resultsmentioning

confidence: 95%

“…Poly(L‐lactide) (PLA) is one of the most promising biobased polymers due to its inherent renewability, biodegradability, good transparency, high modulus, and biocompatibility . These pronounced properties make PLA a potential replacement for many of the engineering polymers.…”

Section: Introductionmentioning

confidence: 99%

“…Some of the already implemented applications include resorbable sutures, textiles, food and beverage containers, coated papers, and other molded articles . However, there are few disadvantages in PLA such as low ductility, low heat deflection temperature (HDT), and poor barrier properties that clearly restrict PLA market penetration into high‐added value applications (automotive, electronics, and smart applications) . Polymer blends processed by extrusion technologies represents one of the most effective approaches to overcome these limitations at reasonable development costs and, in this respect, various PLA‐based complex formulations with polyethylene, aliphatic polyesters, polyamides (PAs), or polycarbonates were successfully developed …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Compatibility in biobased poly(L‐lactide)/polyamide binary blends: From melt‐state interfacial tensions to (thermo)mechanical properties

Raj

Prashantha

Samuel

2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

The melt compatibility between poly(L-lactide) (PLA) and polyamides (PAs) with related thermomechanical properties is addressed. A particular attention is paid to four commercial PAs with extrusion processing temperatures close to PLA (PA10-10 to PA12). PLA/PA blend morphologies without a compatibilizer are first revealed by scanning electron microscopy. PA12 displays the best droplet dispersion into PLA (D n 700 nm), whereas a poor interfacial adhesion is attested for PLA/PA10-10 blends. Interfacial tensions corroborate the PLA/PA10-10 incompatibility (γ 12 9 mN/m, 240 C) with decreasing γ 12 in the order PLA/PA10-10 > PLA/PA11 > PLA/PA12 (γ 12 2 mN/m). Surface tensions confirm the highest compatibility between PLA and PA12. Ductilities, toughnesses, and thermal resistances of PLA/PA blends are evaluated up to 40-wt % PA. Brittle-to-ductile transitions are observed for PA content higher than 30-wt % with the highest ductility for PLA/PA12, in accordance with their enhanced compatibility. Impact strengths display similar trends with a twofold increase for PLA/PA12. An outstanding synergy between PLA and PA is highlighted by dynamic mechanical analyses with heat deflection up to 130 C for PLA/PA blends. The synergy arises from a peculiar crystallization of PLA in the presence of PA. PLA/PA morphologies/interfaces can be consequently tuned by an appropriate PA choice with interesting improvements of thermomechanical properties for high-performance/durable applications.

show abstract

Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Compatibility in biobased poly(L‐lactide)/polyamide binary blends: From melt‐state interfacial tensions to (thermo)mechanical properties

Raj

Prashantha

Samuel

2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The goal toughness of PLA will depend on its final application, and in packaging it would mean resistance to cracking when pressed or squeezed. Toughening of PLA could be achieved via plasticisation, copolymerisation, and melt-blending [250]. Ideally, the blending material should be compatible, biodegradable, and non-toxic, and it should significantly decrease the T g of PLA.…”

Section: Polylactic Acidmentioning

confidence: 99%

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

A short review on fused deposition modeling 3D printing of bio‐based polymer nanocomposites

Mandala

Bannoth

Akella³

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

Fused deposition modeling (FDM), one among the most commonly used additive manufacturing (AM), techniques has been widely used in recent years to produce customized parts with intricate geometries, especially from thermoplastics. This method was limited in its ability to produce parts for industrial applications due to inferior properties and the poor quality of fabricated parts. Hence, researchers are being driven to discover novel materials that are viable for FDM in order to keep up with enormous demand for functional products. In the recent years, it is widely recognized that the emphasis was placed on the bio‐based polymer composite matrices rather than conventional thermoplastics due to its vital advantages that aid in the replacement of synthetic and perilous materials. On this context, this review focuses on the recent advancements in FDM printing with biomaterials. Specifically, attempts have been made to investigate and provide nutshell of 3D printing of current bio‐based nanocomposites which consist of either bio‐derived filler or polymer matrices in order to make 3D printing sustainable. The effect of fillers on the filaments and FDM based products, evolution of novel characteristics of bio nanocomposites, the printability of the developed composites and their development in leading applications were also investigated and summarized.

show abstract

Toughening of Polylactic Acid: An Overview of Research Progress

Cited by 117 publications

References 199 publications

Compatibility in biobased poly(L‐lactide)/polyamide binary blends: From melt‐state interfacial tensions to (thermo)mechanical properties

Compatibility in biobased poly(L‐lactide)/polyamide binary blends: From melt‐state interfacial tensions to (thermo)mechanical properties

Recent Advances in Bioplastics: Application and Biodegradation

A short review on fused deposition modeling 3D printing of bio‐based polymer nanocomposites

Contact Info

Product

Resources

About