Fabrication of high-performance piezoelectric composite from commingled waste plastic films via a novel physicomechanical technology

Guo, Wu; Liu, Zhaogang; Wang, Xuan; Li, Li

doi:10.1016/j.compscitech.2022.109620

Cited by 8 publications

(4 citation statements)

References 39 publications

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“…In this way, the well-pulverized chitin powders could be obtained on a large scale through this unique S 3 M equipment, which possessed a high production exceeding 150 kg/h, showing higher efficiency and more cleanliness in comparison to the conventional milling methods. As shown in Figure d–f, the number of the large-sized chitins decreased, and chitin powder size continuously decreased with the increasing milling cycle, along with the improvement of the size distribution uniformity . Compared to the chitin powders after one-cycle milling, the average size of the powders milled after 10 cycles reached from 85.52 to 51.03 μm, decreasing nearly 40.3%, and the powder size distribution changed from bimodal to unimodal distribution for the persistent shearing and squeezing, as shown in Figure g–i.…”

Section: Resultsmentioning

confidence: 82%

“…As shown in Figure 2d−f, the number of the large-sized chitins decreased, and chitin powder size continuously decreased with the increasing milling cycle, along with the improvement of the size distribution uniformity. 44 Compared to the chitin powders after one-cycle milling, the average size of the powders milled after 10 cycles reached from 85.52 to 51.03 μm, decreasing nearly 40.3%, and the powder size distribution changed from bimodal to unimodal distribution for the persistent shearing and squeezing, as shown in Figure 2g−i. In order to realize the better combination with PVA, small-sized and uniformly distributed chitin powders were needed, and the milling of chitin was performed for 10 cycles.…”

Section: Resultsmentioning

confidence: 94%

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Solid-State Utilization of Chitin to Construct Flexible Films with Enhanced Biocompatibility and Mechanical Performance

Ye,

Wang,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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The resource utilization of biomass materials has ignited increasing interest owing to their renewability, biodegradability, and abundance. However, the most representative biomass materials, such as cellulose and chitin, are faced with challenges in terms of the difficulty of thermal processing and the inability of scalable production due to the strong hydrogen bonding between molecular chains. Herein, the large-sized chitin scraps were efficiently pulverized and exfoliated through solid-state shear milling (S 3 M) technology at room temperature. The strong shearing and squeezing force generated from the two pans could further induce the in situ compatibilization of chitin and another environmentally friendly polymer, poly(vinyl alcohol) (PVA). In this way, the flexible PVA/chitin composite film was successfully prepared via thermal processing, attributed to the plasticizing method and perfect film-forming performance of PVA. The ultrafine-pulverized and well-dispersed chitin could effectively promote cell adhesion and proliferation and further enhance the mechanical properties of the composite film in comparison to that without the S 3 M process. This work provides a facile and efficient strategy for solid-state and high-value utilization of biomass materials, for which the traditional processing approaches encounter challenges on a large scale.

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 94%

Solid-State Utilization of Chitin to Construct Flexible Films with Enhanced Biocompatibility and Mechanical Performance

Ye,

Wang,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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“…There is a lack of research on the crushing equipment and its effectiveness, as well as studies involving fill ratios exceeding 30 wt.%. 11,25 In this study, we utilized the self-developed solid-state shear milling (S3M) method [26][27][28] to transform waste wind turbine blades into a value-added powder with reinforcing capabilities. The unique three-dimensional shear forces generated by S3M technology proved to be highly effective in removing epoxy adhesion from the glass fiber surface and reduce the size of epoxy particles.…”

Section: Introductionmentioning

confidence: 99%

Recycling of waste wind turbine blades for high‐performance polypropylene composites

Pu,

Yang,

Wang

2024

J of Applied Polymer Sci

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Glass fiber‐reinforced epoxy resin composite materials are widely used in various fields because of their excellent properties, especially in the stringent performance requirements of wind turbine blades manufacture for wind power generation. However, the irreversible cross‐linking network of the epoxy resin makes it difficult to recycle. In recent years, the management of large amounts of decommissioned wind turbine blade waste has become spotlight. This study used self‐developed solid‐state shear milling technology to effectively remove the epoxy resin from the glass fiber surface while preserving its high aspect ratio, ensuring its mechanical reinforcement potential. Furthermore, this process also significantly reduced epoxy resin particle size. Subsequently, composites with filler contents up to 50 wt.% were formulated with polypropylene. In the optimized composition, the material exhibited a remarkable 37.1% increase in tensile strength, 147.3% increase in modulus, and 63.8% increase in flexural strength, 165.5% in modulus, respectively. In this research, we conducted a comprehensive exploration into the effects of modifier structure and powder content on different properties of composites, contributing to a deeper understanding of these key factors.

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“…Based on the theories of polymer mechanochemistry and the traditional Chinese stone mills, our research group had developed a green mechanical recycling method, i.e., solid-state shear milling (S 3 M) technology. − Different from the conventional mechanical pulverization equipment based on impact force, e.g., ball mill, this S 3 M equipment can apply strong three-dimensional shearing and squeezing forces during the milling process, so could well mix, pulverize, disperse, and activate the materials inside. By using this equipment, ultrafine pulverization of polymer material, de-crosslinking of cross-linked polyethylene or epoxy waste, , in situ compatibilization of incompatible polymers, and good dispersion of biomass or inorganic fillers in the polymer matrix had been realized . These provide a good reference for the high-value recovery of ESW.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Sustainable Composite Foam from Ethylene Vinyl Acetate-Based Sole Waste via Solid-State Shear Milling and Supercritical Carbon Dioxide Foaming Technologies

Guo,

Liu,

Yang

et al. 2023

ACS Sustainable Chem. Eng.

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Ethylene vinyl acetate (EVA)-based foam has been widely used in the footwear industry, but high-value recycling of EVA-based sole waste (ESW) is still a big challenge, due to its cross-linked structure or complex component. Herein, a facile route to reuse ESW was developed, i.e., adopting solid-state shear milling (S3M) technology to realize the surface-activation and partially de-crosslinking of ESW and then blending ESW active powders (ESW-aps) with thermoplastic polyurethane (TPU) to prepare a TPU/ESW composite foam with good resilience via supercritical carbon dioxide (ScCO2) foaming technology. After 20 milling cycles, ESW-aps with 11.6% reduction in cross-linked chains and an average particle size of ∼400 μm were obtained. This greatly improved the hydrogen bonding between the carbonyl groups of ESW-aps and the amino groups of TPU, so endowed ESW-aps with good dispersion in the TPU matrix. The addition of ESW-aps enhanced the carbon dioxide (CO2) solubility and appropriately reduced the complex modulus of the system, leading to better foaming performance and cell structure of TPU/ESW composite foam. Compared with TPU foam with 20 wt % ESW, the residual strain of the foam with the same content of ESW-aps decreased from 6.8 to 3.6%, close to that of pure TPU foam (3.5%), indicating its potential application in the fields of foamed soles.

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Fabrication of high-performance piezoelectric composite from commingled waste plastic films via a novel physicomechanical technology

Cited by 8 publications

References 39 publications

Solid-State Utilization of Chitin to Construct Flexible Films with Enhanced Biocompatibility and Mechanical Performance

Solid-State Utilization of Chitin to Construct Flexible Films with Enhanced Biocompatibility and Mechanical Performance

Recycling of waste wind turbine blades for high‐performance polypropylene composites

Fabrication of Sustainable Composite Foam from Ethylene Vinyl Acetate-Based Sole Waste via Solid-State Shear Milling and Supercritical Carbon Dioxide Foaming Technologies

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