Core-Sheath Paraffin-Wax-Loaded Nanofibers by Electrospinning for Heat Storage

Lü, Yuan; Xiao, Xurui; Zhan, Yiqiang; Huan, Changmeng; Qi, Shuai; Cheng, Huihui; Xu, Gang

doi:10.1021/acsami.8b02057

Cited by 73 publications

(48 citation statements)

References 40 publications

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“…Beyond simple monolithic structures, where the composition is the same throughout, a range of more complicated nanostructures can be envisaged. Of these, the most widely explored by far is the core-shell (or core-sheath) structure, which contains separate and different core and shell compartments (Li, et al, 2018;Lu, et al, 2018). These can either both be solid-state phases (i.e., two different solids, one nested inside another), or the core could be a liquid or even a gas (giving a hollow material) (Chang, et al, 2017;Mao, et al, 2018;Masoumifard, Guillet-Nicolas, & Kleitz, 2018;Nie, Fu, & Wang, 2010;He, et al, 2017;Eltayeb, Stride, & Edirisinghe, 2013;Lauhon, Gudiksen, Wang, & Lieber, 2002).…”

Section: Introductionmentioning

confidence: 99%

Tunable drug release from nanofibers coated with blank cellulose acetate layers fabricated using tri-axial electrospinning

Yang

et al. 2019

Carbohydrate Polymers

138

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In this study, novel core-shell nanostructures were fabricated through a modified triaxial electrospinning process. These comprised a drug-protein nanocomposite coated with a thin cellulose acetate (CA) shell. They were generated through the simultaneous treatment of an outer solvent, an unelectrospinnable middle fluid, and an electrospinnable core solution in triaxial electrospinning. SEM and TEM results revealed that the core-shell nanofibers had linear and cylindrical morphologies with a diameter from , and distinct core-shell structures with a shell thickness from 1.8 to 11.6 nm. The presence of a CA coating eliminated the initial burst release of ibuprofen seen from a monolithic drug-protein composite, and allowed us to precisely manipulate the drug release (for a 90% percentage) over a time period from 23.5 to 43.9 h in a tunable manner. Mathematical relationships between the processing conditions, the nanostructures produced, and their functional performance were elucidated.

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Section: Introductionmentioning

confidence: 99%

Tunable drug release from nanofibers coated with blank cellulose acetate layers fabricated using tri-axial electrospinning

Yang

et al. 2019

Carbohydrate Polymers

138

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“…The rise of PTM provides exciting opportunities for smart wearable clothing with diverse and multifunctional applications like human healthcare, controllable heating, passive cooling, drug delivery, etc. [ 18,35–38 ]…”

Section: Introductionmentioning

confidence: 99%

Emerging Materials and Strategies for Personal Thermal Management

Liu

Shin

et al. 2020

Advanced Energy Materials

365

242

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us warm in cold climates and shielded us from the nakedness for modesty and civilization. [1,2] Cloth is also a platform for artists, designers, and tailors to advance the clothing demands with emerging materials, process, and fashion. [2] While the majority of the functionalities of clothes lie in their physical attributes, such as their softness, breathability, air/ vapor permeability, and, of course the appearance, their role in thermal management is equally, if not more, important. The primary goal of clothing is to satisfy human being's basic needs in thermal comfort, by providing cooling in the hot environment or heating in the cold environment. [1] The energy management aspect of clothing is becoming an increasingly important and attractive aspect due to our increasing awareness to energy consumption and our persisting pursuit of comfort and health. The finite availability and the associated environmental consequence of fossil fuels have motivated us to save energy from virtually all aspects of our daily lives. A suitable thermal envelop is a necessity for our living and working. To create a comfortable indoor environment, the building heating, ventilation, and air conditioning (HVAC) systems are widely used for space cooling and heating at the expense of excessive energy consumption. [3][4][5][6] According to United States In this decade, the demands of energy saving and diverse personal thermoregulation requirements along with the emergence of wearable electronics and smart textiles give rise to the resurgence of personal thermal management (PTM) technologies. PTM, including personal cooling, heating, insulation, and thermoregulation, are far more flexible and extensive than the traditional air/liquid cooling garments for the human body. Concomitantly, many new advanced materials and strategies have emerged in this decade, promoting the thermoregulation performance and the wearing comfort of PTM simultaneously. In this review, an overview is presented of the state-ofthe-art and the prospects in this burgeoning field. The emerging materials and strategies of PTM are introduced, and classed by their thermal functions. The concept of infrared-transparent visible-opaque fabric (ITVOF) is first highlighted, as it triggers the work on advanced PTM by combining it with radiative cooling, and the corresponding implementations and realizations are subsequently introduced, followed by wearable heaters, flexible thermoelectric devices, and sweat-management Janus textiles. Finally, critical considerations on the challenges and opportunities of PTM are presented and future directions are identified, including thermally conductive polymers and fibers, physiological/psychological statistical analysis, and smart PTM strategies.

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“…Octadecane is a good candidate of thermo-regulated material because of its high latent heat and low supercooling degree, though, like other solid-liquid PCMs, the leakage during phase change process is unavoidable, which block its application in energy storage. 21,22 According to previous research, form-stable PCMs can be obtained by many approaches, such as microencapsulate, lling porous nanobers, 23 sol-gel 24 and electrospinning. The size of PCMs capsule has a great inuence on their melting behavior.…”

Section: Introductionmentioning

confidence: 99%

Development of core–sheath structured smart nanofibers by coaxial electrospinning for thermo-regulated textiles

Wang

Fang

et al. 2019

RSC Adv.

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It is of great significance to develop phase change materials (PCMs) with high performance. The reported PCMs usually possess serious defects like low heat capacity and poor thermal stability. Here, core-sheath structured nanofibers with polyvinyl butyral (PVB) as the sheath and octadecane as the core were fabricated by melt coaxial electrospinning. Pure octadecane without any solvents was used as the core solution, thus, the optimal sample possessed very high latent heat up to 118 J g À1 . We studied the influence of core feed rate and PVB solution concentration on the encapsulation rate, and the highest encapsulation rate was found when the PVB concentration was 10% and core feed rate was 0.08 mL h À1 . And hexagonal cesium tungsten bronze (Cs x WO 3 , a near infrared absorber) was introduced into the optimal sample partly to improve its conversion efficiency of solar to thermal energy, and partly absorb uncomfortable infrared light; the composite phase change material also possessed high latent heat up to 96.9 J g À1 . In addition, 100 thermal cycle test proved that with a minor latent heat decrease, the prepared core-sheath structured smart nanofibers had good thermal stability, which overcomes the leakage problem of pure octadecane. Additionally, the 9 wt% Cs x WO 3 -loaded sample had an increase in tensile strength and elongation compared with the sample without Cs x WO 3 , indicating the good compatibility between Cs x WO 3 and PVB.

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Core-Sheath Paraffin-Wax-Loaded Nanofibers by Electrospinning for Heat Storage

Cited by 73 publications

References 40 publications

Tunable drug release from nanofibers coated with blank cellulose acetate layers fabricated using tri-axial electrospinning

Tunable drug release from nanofibers coated with blank cellulose acetate layers fabricated using tri-axial electrospinning

Emerging Materials and Strategies for Personal Thermal Management

Development of core–sheath structured smart nanofibers by coaxial electrospinning for thermo-regulated textiles

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