Reactive melt crosslinking of cellulose nanocrystals/poly(ε-caprolactone) for heat-shrinkable network

Avella, Angelica; Idström, Alexander; Mincheva, Rosica; Nakayama, K.; Evenäs, Lars; Raquez, Jean‐Marie; Re, Giada Lo

doi:10.1016/j.compositesa.2022.107166

Cited by 11 publications

(21 citation statements)

References 49 publications

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“…Ashby plot created with Granta EduPack software of specific elongation against the specific price of the cross-linked materials from this study in comparison with different polyethylene grades, polyvinyl chloride, and biodegradable/biobased polymers on the market (polybutylene succinate, polylactide, thermoplastic starch, and polycaprolactone). The plot also reports cross-linked PCL materials produced in our previous study . The prices of PBAT, pulp fibers, and PVC shrink films correspond to the grades purchased and used in this work (specifications in Materials section).…”

Section: Resultsmentioning

confidence: 98%

“…The properties of X- The plot also reports cross-linked PCL materials produced in our previous study. 18 The prices of PBAT, pulp fibers, and PVC shrink films correspond to the grades purchased and used in this work (specifications in Materials section). The prices of PCL, PLA, PE and TPS are obtained from Granta EduPack database.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…To produce a circular heat-shrinkable biocomposite, PBAT and 15 vol % of never-dried pulp fibers (X-P-PBAT) were cross-linked during reactive melt processing in an internal mixer (Figure ). The fibers were fed in the never-dried state to reduce their agglomeration during melt processing and to exploit the water for boosting the radical reactions. , …”

Section: Resultsmentioning

confidence: 99%

“…The fibers were fed in the never-dried state to reduce their agglomeration during melt processing and to exploit the water for boosting the radical reactions. 18,20 Three references were processed to explore the influence of the fibers and cross-linking on the biocomposite properties: PBAT in the presence of water, PBAT cross-linked with the same amount of peroxide in the presence of water (X-PBAT) and PBAT/pulp biocomposite without peroxide (P-PBAT). PBAT was first processed with the equivalent amount of water as present in the never-dried fibers to study the extent of possible hydrolysis occurring during melt processing.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Reusable, Recyclable, and Biodegradable Heat-Shrinkable Melt Cross-Linked Poly(butylene adipate-co-terephthalate)/Pulp Biocomposites for Polyvinyl Chloride Replacement

Avella,

Salse,

Sessini

et al. 2024

ACS Sustainable Chem. Eng.

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Heat-shrinkable films are widely used as disposable secondary packaging but are conventionally made from fossilbased and nonbiodegradable polyvinyl chloride or polyethylene. To lower the environmental impact of such products, this work reports the development of recyclable, biodegradable, and partially biosourced heat-shrinkable biocomposites that are costcompetitive with existing shrink wraps. Poly(butylene adipate-co-terephthalate), a growing biodegradable thermoplastic, was simultaneously reinforced with pulp fibers and partially cross-linked in a single-step reactive melt processing. The designed peroxideinitiated reaction led to a 55 wt % cocontinuous insoluble gel incorporating all the pulp fibers into a cross-linked polymer network. In the solid state, the cross-linked biocomposite shows 60% elongation at break with a 200% increase in Young's modulus, while the only addition of pulp fibers stiffens and embrittles the matrix. Creep tests in the melt state indicated that the cross-linked network induces homogeneous shrinking even during the loading phase, demonstrating the potential use of the biocomposites as heatshrinkable films. The shrinking also promotes the shape-memory of the biocomposite, which retains its dimensions after four cycles. The circularity of the materials was assessed by mechanical recycling and industrial composting, which have proven feasible end-oflife options for heat-shrinkable biocomposites.

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Section: Resultsmentioning

confidence: 98%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Reusable, Recyclable, and Biodegradable Heat-Shrinkable Melt Cross-Linked Poly(butylene adipate-co-terephthalate)/Pulp Biocomposites for Polyvinyl Chloride Replacement

Avella,

Salse,

Sessini

et al. 2024

ACS Sustainable Chem. Eng.

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“…[81] In this scenario, CNTs are not only utilized in incrementing the mechanical features but additionally able to absorb infra-red photons while releasing stored strain energy. [82,83,8] SMP multifunctional nanoarchitectures are applied in a vast range of fields including in lighttriggered medical gadgets, optical actuators and sensors, as well as micro-robots. In the biomedical sector, SMP nanoarchitectures composed of in vivo nanoparticulates can undergo heating by near infrared (NIR) and simultaneously achieve both tissues penetration as well as heat ablation of tumors, in vivo.…”

Section: Light-responsivity Of Smp Nanoarchitecturesmentioning

confidence: 99%

Multifunctional properties optimization and stimuli‐responsivity of shape memory polymeric nanoarchitectures and applications

Idumah

2023

Polymer Engineering & Sci

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As a result of nanotechnological advancement, parameters inducing flaws in shape memory polymers (SMP), such as weak mechanical properties, low electrical, and thermal conductivities, and so on, were mitigated through the inclusion of a versatile range of nanomaterials such as montmorillonites, carbon nanotubes, graphene and derivatives, cellulose nanocrystals, carbon nanofibers, and so on, thereby forming shape memory polymeric nanoarchitectures (SMPNs). Hence, this work elucidates most recently emerging advancements on multifunctional SMPNs filled by differing nanoparticulates. Varying multifunctional SMPNs exhibit responsivity to varying forms of stimulation strategies, including thermal responsivity, electroactivated, alternating magnetic field responsivity, light sensitivity, and water induced SMPs. Therefore, this article presents very recently emerging advancements in the construction, characterization, properties, and multifunctional applications of stimuliresponsive SMPNs, with special emphasis on functional and stimuli-responsive SMPNs. Furthermore, important functions of SMPNs such as stimuli-memory effect and self-mending abilities, as well as prospective strategies for future progress of these materials are highlighted.

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A new approach for grafting plasticized cellulose acetate biodegradable plastic with maleic anhydride: Processing and characterization

Pesaranhajiabbas,

Mohanty,

Al‐Abdul‐Wahid

et al. 2024

SPE Polymers

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Grafting polymers with reactive maleic anhydride is a common approach for the synthesis of new material with the capability of acting as a compatibilizer in polymer blends. Accordingly, this research showed a new approach for grafting maleic anhydride onto renewable cellulose acetate using an initiator. The grafting process through extrusion showed good stability with continuous production of all grafted samples. Moreover, two different grafting processes, namely one‐step and two‐step processes, were shown to produce materials with very similar characteristics. Grafting of maleic anhydride onto cellulose acetate by reacting with its hydroxyl groups was confirmed by both Fourier transform infrared spectroscopy and nuclear magnetic resonance analysis. Rheological studies also demonstrated the enhanced flowability and lower viscosity of the grafted material in comparison to the plasticized cellulose acetate.Highlights Grafting maleic anhydride onto plasticized cellulose acetate by reactive extrusion. Detection of grafted maleic anhydride onto cellulose acetate through NMR analysis. High thermal stability of grafted materials. Significant reduction in viscosity of plasticized cellulose acetate after grafting

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Reactive melt crosslinking of cellulose nanocrystals/poly(ε-caprolactone) for heat-shrinkable network

Cited by 11 publications

References 49 publications

Reusable, Recyclable, and Biodegradable Heat-Shrinkable Melt Cross-Linked Poly(butylene adipate-co-terephthalate)/Pulp Biocomposites for Polyvinyl Chloride Replacement

Reusable, Recyclable, and Biodegradable Heat-Shrinkable Melt Cross-Linked Poly(butylene adipate-co-terephthalate)/Pulp Biocomposites for Polyvinyl Chloride Replacement

Multifunctional properties optimization and stimuli‐responsivity of shape memory polymeric nanoarchitectures and applications

A new approach for grafting plasticized cellulose acetate biodegradable plastic with maleic anhydride: Processing and characterization

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