Simultaneous improvement of mechanical properties and electromagnetic interference shielding performance in eco-friendly polylactide composites via reactive blending and MWCNTs induced morphological optimization

Fang, Huagao; Wang, Shenglin; Ye, Wujin; Chen, Xu; Wang, Xiaohong; Xu, Pei; Li, Xueliang; Ding, Yunsheng

doi:10.1016/j.compositesb.2019.107452

Cited by 31 publications

(13 citation statements)

References 47 publications

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“…Fang et al 88 prepared ternary PLA/CNT containing a toughening modifier poly(ethylene glycol) (PEG). They reported that incorporated CNT forced the PEG to form a small domain in the PLA matrix facilitating a balance in the stiffness and toughness of the nanocomposite.…”

Section: Preparation Of Pla Nanocompositesmentioning

confidence: 99%

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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The global concern over the environmental protection and bio‐sustainability of plastic waste materials has prompted a vibrant search for renewable and biodegradable polymers in the academia and industrial sectors. Amidst other biopolymers, poly(lactic acid) (PLA) is identified as the most promising thermoplastic aliphatic polyester. PLA is derived from agricultural products with unique physical and mechanical properties that are comparable with the conventional petroleum‐derived polymers. Yet, some of the properties are insufficient for advanced materials applications. Rigid nanoparticles are incorporated in the PLA matrix to alleviate its properties for specific high‐performance applications. Here, we report various approaches of preparing functional PLA nanocomposites with emphasis on the strengths and weaknesses of each of the methods, as well as the achieved properties enhancement for a targeted application. Designing high‐performance PLA nanocomposite involves careful selection of the most appropriate nanofillers or combinations of nanofillers, preparation technique and processing parameters. Besides multi‐walled carbon nanotubes (CNT) and montmorillonite (MMT) that are prominent as nucleating agents to achieve high thermal and mechanical properties, other nanofillers like silver nanoparticles (AgNP) play critical roles in improving antibacterial and high‐performance properties of PLA.

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Section: Preparation Of Pla Nanocompositesmentioning

confidence: 99%

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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show abstract

“…For example, Das’s group conducted a series of related studies, − and the EMI SE of the reported wool/nylon polymer nanocomposites increases from 8.65 to 73.8 dB at 1–20 dipping cycles, which affects the coated PEDOT:PSS/reduced graphene oxide loading directly . Besides, CPCs with special structures, including porous structure, segregated structure, alternating multilayer structure, , and nacre-like structure, can also be designed easily to further enhance their EMI shielding performance based on the multiple reflections of EMWs.…”

Section: Introductionmentioning

confidence: 99%

Flexible Conductive Polyimide Fiber/MXene Composite Film for Electromagnetic Interference Shielding and Joule Heating with Excellent Harsh Environment Tolerance

Sun

Wang

Yang

et al. 2021

ACS Appl. Mater. Interfaces

104

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The development of flexible MXene-based multifunctional composites is becoming a hot research area to achieve the application of conductive MXene in wearable electric instruments. Herein, a flexible conductive polyimide fiber (PIF)/MXene composite film with densely stacked “rebar-brick-cement” lamellar structure is fabricated using the simple vacuum filtration plus thermal imidization technique. A water-soluble polyimide precursor, poly(amic acid), is applied to act as a binder and dispersant to ensure the homogeneous dispersion of MXene and its good interfacial adhesion with PIF after thermal imidization, resulting in excellent mechanical robustness and high conductivity (3787.9 S/m). Owing to the reflection on the surface, absorption through conduction loss and interfacial/dipolar polarization loss inside the material, and the lamellar structure that is beneficial for multiple reflection and scattering between adjacent layers, the resultant PIF/MXene composite film exhibits a high electromagnetic interference (EMI) shielding effectiveness of 49.9 dB in the frequency range of 8.2–12.4 GHz. More importantly, its EMI shielding capacity can be well maintained in various harsh environments (e.g., extreme high/low temperature, acid/salt solution, and long-term cyclic bending), showing excellent stability and durability. Furthermore, it also presents fast, stable, and long-term durable Joule heating performances based on its stable and excellent conductivity, demonstrating good thermal deicing effects under actual conditions. Therefore, we believe that the flexible conductive PIF/MXene composite film with excellent conductivity and harsh environment tolerance possesses promising potential for electromagnetic wave protection and personal thermal management.

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“…Forming a segregated conductive structure in CPCs is effective in reaching high electrical conductivity with very low percolation concentration, which is overwhelmingly superior in comparison with random CPCs [21,24,25]. On the other hand, it has also been demonstrated that the CPCs with a segregated structure have reasonable EMI SE [26][27][28][29][30]. However, few reports have performed a comparative study on the EMI SE of segregated and random CPCs [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic interference shielding enhancement of poly(lactic acid)-based carbonaceous nanocomposites by poly(ethylene oxide)-assisted segregated structure: a comparative study of carbon nanotubes and graphene nanoplatelets

Wang

et al. 2021

Adv Compos Hybrid Mater

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Fabrication of conductive polymer composites with segregated networks is an effective approach in electromagnetic interference (EMI) shielding. In this article, a simple strategy based on the addition of poly(ethylene oxide) (PEO), acting as a binder between carbonaceous nanofillers and poly(lactic acid) (PLA) particles, is proposed. The carbonaceous nanofillers were mixed with small amounts of PEO to prepare the masterbatch, and then the masterbatch was coated on the surface of PLA particles at an appropriate temperature. Finally, the coated PLA particles were hot-pressed to form the PLA-based carbonaceous nanocomposites with a segregated structure. The effects of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) on the electrical conductivity and EMI shielding properties of PLA-based nanocomposites, both in segregated and random structures, were compared. For all the nanocomposites, electrical conductivity is always higher in segregated structure than that in random structure. Moreover, the EMI shielding effectiveness (SE) in segregated structure is also higher than that in random structure for all the PLA/GNP nanocomposites and the PLA/CNT nanocomposites with 0.5 to 2 wt% of CNTs. However, for PLA/CNT nanocomposites with 4 to 6 wt% of CNTs, the EMI SE in segregated structure is lower than that in random structure, which is in sharp contrast to the situation of electrical conductivity, due to denser conductive networks in random structure compared to that in segregated structure as demonstrated by the scanning electronic microscopy results. This indicates that the mechanism of EMI shielding is different from that of electrical conductivity.

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Simultaneous improvement of mechanical properties and electromagnetic interference shielding performance in eco-friendly polylactide composites via reactive blending and MWCNTs induced morphological optimization

Cited by 31 publications

References 47 publications

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Flexible Conductive Polyimide Fiber/MXene Composite Film for Electromagnetic Interference Shielding and Joule Heating with Excellent Harsh Environment Tolerance

Electromagnetic interference shielding enhancement of poly(lactic acid)-based carbonaceous nanocomposites by poly(ethylene oxide)-assisted segregated structure: a comparative study of carbon nanotubes and graphene nanoplatelets

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