Creation of fully degradable poly(lactic acid) composite by using biosourced poly(4-hydroxybutyrate) as bioderived toughening additives

Wu, Hao; Wang, Huaping; Sun, Abin; Kan, Ze

doi:10.3144/expresspolymlett.2022.72

Cited by 5 publications

(3 citation statements)

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“…Considering the facile isolation of the (co)polymers, our approach is particularly well suited for large-scale reactions to yield (co)poly-γ-butyrolactones which could find applications as thermoplastic material for injection molding processes (Fig. 2), as polyol for polyurethane applications (Table S11†), 25 in biodegradable polymer blends, 26 as binder for coatings and inks, as porous material or fibrous material for medical applications 27 or other utilization as additive in the formulation of cosmetics or household products.…”

Section: Discussionmentioning

confidence: 99%

Facile preparation of biodegradable poly(γ-butyrolactone) via base-assisted ring-opening polymerization

Falconnet¹,

Nicolas²,

Vollgraff³

et al. 2023

Green Chem.

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Section: Discussionmentioning

confidence: 99%

Facile preparation of biodegradable poly(γ-butyrolactone) via base-assisted ring-opening polymerization

Falconnet¹,

Nicolas²,

Vollgraff³

et al. 2023

Green Chem.

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“…However, plasticizers can improve its flexibility. [5][6][7][8][9][10][11][12][13][14] Unfortunately, PLA often does not have suitable properties to be used as a structural material, but with reinforcement and additives, its mechanical properties can be greatly improved and it can be made suitable for engineering applications. 15 One promising reinforcing material is basalt fiber.…”

Section: Introductionmentioning

confidence: 99%

“…PLA is a rigid material with an elongation at break of only 2%–5%. However, plasticizers can improve its flexibility 5–14 …”

Section: Introductionmentioning

confidence: 99%

Effects of carbon‐based nanoparticles on the properties of poly(lactic acid) hybrid composites containing basalt fibers and carbon‐based nanoparticles processed by injection molding

Juhász,

Pinke,

Gonda

et al. 2024

Polymer Engineering & Sci

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In this study, we developed composites with a poly(lactic acid) matrix and reinforced with basalt fiber, carbon‐based nanoparticles (carbon nanotube [CNT] and expanded graphene [GNP]), and both basalt fiber and nanoparticles (hybrid composites). The composites were produced by extrusion, and then tensile specimens were injection molded from the composites. The hybrid composites exhibited enhanced mechanical properties. The reinforcing materials increased crystallinity; this was more pronounced for hybrid composites. We experienced significant increase in the glass transition temperature, which proves the better interaction between the reinforcing and the matrix phases. Dynamic mechanical thermal analysis showed that the nanoparticles increased the storage modulus both alone and in combination with basalt fibers. Furthermore, the basalt fiber‐reinforced composites and hybrids exhibited significant modulus above the glass transition temperature. Based on scanning electron microscopy images of the fracture surfaces, we concluded that adding basalt fibers during compounding resulted in better dispersion of the nanoparticles.Highlights Poly(lactic acid) (PLA) reinforced with basalt fiber has good strength properties. Graphene hybrid exhibits notable tensile modulus improvement in hybrids. Graphene and carbon nanotubes are crystalline nucleating agents for PLA. Enhanced nanoparticle distribution was discovered for hybrid composites. The glass transition temperature of PLA increases with reinforcement.

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Tailoring the Mechanical Properties and Foaming Behaviors of PLA/P4HB Blends by Using P4HB‐g‐GMA as Compatibilizer

Li,

Chen,

Feng

et al. 2024

Journal of Polymer Science

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Synthetic poly(4‐hydroxybutyrate) (P4HB), a flexible and biodegradable polymer, shows great promise in improving the toughness of poly(lactic acid) (PLA), but the inherent immiscibility of PLA and P4HB compromises the toughening efficiency. To address this issue, P4HB grafted glycidyl methacrylate (P4HB‐g‐GMA) is synthesized for the purpose of enhancing the compatibility within the PLA/P4HB blend. The epoxy groups on P4HB‐g‐GMA can form strong chemical bonds with PLA chains and remain compatible with P4HB. Rheological data confirm that adding P4HB‐g‐GMA enhances polymer chain entanglement. Therefore, the phase interface of the blend becomes more diffuse, leading to improved mechanical performance. Specifically, a 3D‐printed PLA/P4HB/P4HB‐g‐GMA blend containing 8% P4HB‐g‐GMA (PLA/P4HB/G8) achieves an elongation at break of 161.5%, approximately 22.7 times higher than that of a PLA/P4HB blend without the modifier. Moreover, the PLA/P4HB/G8 blends show a higher volume expansion ratio (VER) and better cell morphology due to the increased melt strength from P4HB‐g‐GMA. This study demonstrates a simple and efficient method to improve the compatibility between PLA and P4HB, resulting in superior mechanical performance of PLA/P4HB blends and broadening their potential applications in foaming.

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Creation of fully degradable poly(lactic acid) composite by using biosourced poly(4-hydroxybutyrate) as bioderived toughening additives

Cited by 5 publications

References 0 publications

Facile preparation of biodegradable poly(γ-butyrolactone) via base-assisted ring-opening polymerization

Facile preparation of biodegradable poly(γ-butyrolactone) via base-assisted ring-opening polymerization

Effects of carbon‐based nanoparticles on the properties of poly(lactic acid) hybrid composites containing basalt fibers and carbon‐based nanoparticles processed by injection molding

Tailoring the Mechanical Properties and Foaming Behaviors of PLA/P4HB Blends by Using P4HB‐g‐GMA as Compatibilizer

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