Mass production of biodegradable porous foam for simultaneous solar evaporation and thermoelectricity generation

Liu, Zhipeng; Gong, Zhi; Li, Xiaolong; Ren, Jiaxin; Gong, Jiang; Qu, Jinping; Niu, Ran

doi:10.1039/d3ta06133g

Cited by 8 publications

(2 citation statements)

References 64 publications

(68 reference statements)

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“…PCM is accompanied by increase in absorbance. Enhance in absorbance enables PCM composite to capture and respond to incident solar radiation, facilitating higher thermal energy storage rates more effectively [58]. The increased absorption found in the composite distributed with EG, as opposed to pure PCM, can be attributed to the interaction of many significant variables.…”

Section: 3optical Properties Of Ss-pcm Compositementioning

confidence: 99%

Shape stable composite phase change material with improved thermal conductivity for electrical-to-thermal energy conversion and storage

Islam,

Pandey,

Saidur

et al. 2024

Materials Today Sustainability

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Section: 3optical Properties Of Ss-pcm Compositementioning

confidence: 99%

Shape stable composite phase change material with improved thermal conductivity for electrical-to-thermal energy conversion and storage

Islam,

Pandey,

Saidur

et al. 2024

Materials Today Sustainability

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“…This innovative design enables the screw within the stator to execute both rotation and constant-speed reverse revolution motions to achieve an extension-dominated flow field, featuring positive displacement transport characteristics, efficient mixing and dispersion properties, as well as short-process and low-energy consumption attributes [14]. The advantages of the internal meshing screw mixer have led to its adoption in various manufacturing processes [15], including multi-component plastic blending capacity modification [16,17], organic and inorganic hybrid function modification [18,19], thermoplastic fiber reinforced modification [20,21], high-speed molding of refractory processing materials [22,23], and modification of materials exhibiting extreme rheological behavior [24][25][26], etc. Despite its widespread use across various industries, including polymer processing, it has yet to be implemented in the food industry.…”

Section: Introductionmentioning

confidence: 99%

Kinematics-Based Design Method and Experimental Validation of Internal Meshing Screw for High-Viscosity Fluid Mixing

Guo,

Liu,

Hao

et al. 2024

Applied Sciences

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The challenge of mixing high-viscosity materials is a common issue encountered in the manufacturing process of food materials. The advantages of the internal meshing screw mixer have led to its adoption in various manufacturing processes, but it has yet to be implemented in the food industry. The paper presents a design method for an internal meshing screw mixer based on kinematic principles. The mixer features a helical chamber created by alternating volumes formed by the stator and rotor, establishing an extension-dominated environment for mixing high-viscosity fluids. A kinematic model based on the internal cycloid principle was established, providing trajectories and equations for key points on the rotor, simulating both its rotation and revolution processes, and revealing the velocity variations at different points on the rotor. Based on the kinematic analysis results, a stator and rotor design method was developed according to relevant functional divisions. To achieve the desired motion effects, transmission and support devices were designed, and the relationship between the transmission device and the internal cycloid surface of the fixed rotor was established. The mixer’s application and mixing effectiveness in the food industry were validated using corn syrup and flour. Experimental results showed that the extensional mixer described in the paper effectively mixed high-viscosity fluids while also efficiently blending fine powders. Slurry viscosity was tested with a rheometer at different speeds with an eccentric rotor mixer. Results showed that viscosity decreased with increasing shear rate, with a more pronounced decrease at higher shear rates. The apparent viscosity trend remained consistent at different speeds, although variations were observed at lower shear rates, especially concerning speed. The non-Newtonian fluid index exhibited minimal variations at different speeds, while the consistency coefficient showed significant fluctuations. The mixing uniformity index of the slurry was used to evaluate the mixing uniformity and dispersion uniformity of this extensional mixer. At different rotational speeds, the density of the slurry changes little. The uniformity index of mixing decreases gradually with the increase of rotational speed, reaching its maximum at 15 r/min. The overall trend of the uniformity index decreases with increasing rotational speed, indicating a decrease in density uniformity. A peak appears at 45 r/min, possibly due to the maximum values of elongation rate and shear rate at this speed. As the rotational speed increases, the residence time of the material in the mixer decreases, which may be the main reason for the decrease in mixing uniformity. These findings provide valuable insights into the design and utilization of extension-dominated screw mixers within the food industry, laying a solid foundation for future research and practical applications in this field.

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Photothermal Conversion Porous Organic Polymers: Design, Synthesis, and Applications

Shi,

Wang,

Meng

et al. 2024

Small Methods

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Solar energy is a primary form of renewable energy, and photothermal conversion is a direct conversion process with tunable conversion efficiency. Among various kinds of photothermal conversion materials, porous organic polymers (POP) are widely investigated owing to their controllable molecular design, tailored porous structures, good absorption of solar light, and low thermal conductivity. A variety of POP, such as conjugated microporous polymers (CMP), covalent organic frameworks (COF), hyper‐crosslinked porous polymers (HCP), polymers of intrinsic microporosity (PIM), porous ionic polymers (PIP), are developed and applied in photothermal conversion applications of seawater desalination, latent energy storage, and biomedical fields. In this review, a comprehensive overview of the recent advances in POP for photothermal conversion is provided. The micro molecular structure characteristics and macro morphology of POP are designed for applications such as seawater desalination, latent heat energy storage, phototherapy and photodynamic therapy, and drug delivery. Besides, a probe into the underlying mechanism of structural design for constructing POP with excellent photothermal conversion performance is methodicalized. Finally, the remaining challenges and prospective opportunities for the future development of POP for solar energy‐driven photothermal conversion applications are elucidated.

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Mass production of biodegradable porous foam for simultaneous solar evaporation and thermoelectricity generation

Abstract: We propose a cost-effective approach to construct 3D biodegradable foams by combining melt blending and surface coating, which show high performance in simultaneous solar-vapor conversion and thermoelectricity generation.

Cited by 8 publications

References 64 publications

Shape stable composite phase change material with improved thermal conductivity for electrical-to-thermal energy conversion and storage

Shape stable composite phase change material with improved thermal conductivity for electrical-to-thermal energy conversion and storage

Kinematics-Based Design Method and Experimental Validation of Internal Meshing Screw for High-Viscosity Fluid Mixing

Photothermal Conversion Porous Organic Polymers: Design, Synthesis, and Applications

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