CO2-based fabrication of biobased and biodegradable poly (3-hydroxybutyrate-co-3-hydroxyvalerate)/graphene nanoplates nanocomposite foams: Toward EMI shielding application

Luo, Jingyun; Zhu, Meifang; Wang, Longzhen; Zhou, Hongfu; Wen, Bianying; Wang, Xiangdong; Zhang, Yuxia

doi:10.1016/j.polymer.2022.125034

Cited by 22 publications

(26 citation statements)

References 52 publications

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“…PC and ABS have similar polarities, making them potentially compatible with each other. ABS is firmly bonded by its styrene-acrylonitrile side chains, yielding better physical properties [ 14 ]. Under this fundamental assumption, it would be interesting to determine the dependence of the impact strength and modulus on the PC content.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Electromagnetic Interference Shielding of Carbon Composites with Polycarbonate and Acrylonitrile Butadiene Styrene Resins

et al. 2023

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As environmental pollution becomes a serious concern, considerable effort has been undertaken to develop power devices with minimal production of carbon dioxide (CO2) and exhaust gases. Owing to this effort, interest in technologies related to hybrid and electric products that use fuel cells has been increasing. The risk of human injuries owing to electromagnetic waves generated by electrical and electronic devices has been also rising, prompting the development of mitigating technologies. In addition, antistatic devices for protecting operators from static electricity have also been considered. Therefore, in this study, we investigated the development of thermoplastic carbon composites containing carbon fibers (CFs) and carbon nanotubes (CNTs). Ultimately, materials with improved mechanical properties (e.g., flexural, impact, and tensile strength properties of about +61.09%, +21.44%, +63.56%, respectively), electromagnetic interference (EMI) shielding (+70.73 dB), and surface resistivity (nearly zero) can be developed by impregnating CFs and CNTs with polycarbonate (PC) and acrylonitrile butadiene styrene (ABS) resins, respectively. The total average mechanical properties of PC and ABS composites increased by 24.35% compared with that of ABS composites, while that of PC composites increased by 32.86% with that of PC and ABS composites. Therefore, in this study, we aimed to develop carbon composites, to take advantage of these thermoplastic resins.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Electromagnetic Interference Shielding of Carbon Composites with Polycarbonate and Acrylonitrile Butadiene Styrene Resins

et al. 2023

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“…10,11 Sc-CO 2 is also the best foaming agent for products requiring a high expansion ratio due to its high diffusion and solubility in the polymer matrix. [12][13][14][15][16] PLA bears a terminal carboxyl group, which reacts relatively fast with an epoxy group in the molten state. 17 Thus, the use of a multi-epoxy compound can be used as a CE to increase the melt strength of PLA and consequently improve its foamability.…”

Section: Introductionmentioning

confidence: 99%

“…When used as a foaming agent, it may strongly plasticize polymers, including their crystallization and/or reducing their glass transition temperature ( T g ) 10,11 . Sc‐CO 2 is also the best foaming agent for products requiring a high expansion ratio due to its high diffusion and solubility in the polymer matrix 12–16 …”

Section: Introductionmentioning

confidence: 99%

Effect of nano‐sized zinc citrate on the supercritical carbon dioxide‐assisted extrusion foaming behavior of poly(lactic acid)

Zhou

Liu

Yin

et al. 2023

J of Applied Polymer Sci

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Poly(lactic acid) (PLA) foams containing various amounts of an epoxy as a chain extender (CE) and nano‐sized zinc citrate as a nucleating agent are prepared by continuous extrusion using supercritical CO2 (sc‐CO2) as a physical foaming agent. Processing parameters such as the CE content, sc‐CO2 flow rate, and foaming temperature are optimized with regard to the apparent density and expansion ratio of the PLA foams. The nano‐sized zinc citrate exhibits a high nucleation activity for the crystallization of the PLA. The addition of 0.5 wt% nano‐sized zinc citrate significantly increases the compressive strength and modulus of the PLA foams from 0.124 MPa and 3.1 MPa to 0.35 MPa and 19 MPa, respectively. The PLA/0.5 wt% nano‐sized zinc citrate foam shows a microcellular structure with an average cell diameter of 17.1 μm.

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“…Qiu et al [ 3 ] used AESO chemically grafted with flame retardants to produce a bio-based foam with desirable mechanical properties and flame retardancy. Luo et al [ 4 ] reported a biodegradable poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)-based electromagnetic shielding foam by supercritical CO 2 , and constructed a green and economic avenue for the application of this PHBV foam in the field of electromagnetic shielding.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Bio-Based Foams with a Uniform Pore Structure by Nanocellulose/Nisin/Waterborne-Polyurethane-Stabilized Pickering Emulsion

Chen¹,

Duan²,

Zhao³

et al. 2022

Polymers

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Bio-based porous materials can reduce energy consumption and environmental impact, and they have a possible application as packaging materials. In this study, a bio-based porous foam was prepared by using a Pickering emulsion as a template. Nisin and waterborne polyurethane (WPU) were used for physical modification of 2,2,6,6-tetramethyl piperidine-1-oxyl-oxidized cellulose nanocrystals (TOCNC). The obtained composite particles were applied as stabilizers for acrylated epoxidized soybean oil (AESO) Pickering emulsion. The stability of the emulsion was characterized by determination of the rheological properties and microscopic morphology of the emulsion. The emulsion stabilized by composite particles showed better stability compared to case when TOCNC were used. The porous foam was obtained by heating a composite-particles-stabilized Pickering emulsion at 90 °C for 2 h. SEM (scanning electron microscopy) images showed that the prepared foam had uniformly distributed pores. In addition, the thermal conductivity of the foam was 0.33 W/m·k, which was a significant decrease compared to the 3.92 W/m·k of the TOCNC foam. The introduction of nisin and WPU can reduce the thermal conductivity of the foam, and the physically modified, TOCNC-stabilized Pickering emulsion provides an effective means to preparing bio-based porous materials.

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CO2-based fabrication of biobased and biodegradable poly (3-hydroxybutyrate-co-3-hydroxyvalerate)/graphene nanoplates nanocomposite foams: Toward EMI shielding application

Cited by 22 publications

References 52 publications

Mechanical Properties and Electromagnetic Interference Shielding of Carbon Composites with Polycarbonate and Acrylonitrile Butadiene Styrene Resins

Mechanical Properties and Electromagnetic Interference Shielding of Carbon Composites with Polycarbonate and Acrylonitrile Butadiene Styrene Resins

Effect of nano‐sized zinc citrate on the supercritical carbon dioxide‐assisted extrusion foaming behavior of poly(lactic acid)

Preparation of Bio-Based Foams with a Uniform Pore Structure by Nanocellulose/Nisin/Waterborne-Polyurethane-Stabilized Pickering Emulsion

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