Preparation of a new thermal regulating fiber based on PVA and paraffin

Jiang, Mengjin; Song, X.; Xu, Jianjun; Ye, Guangdou

doi:10.1016/j.solmat.2008.07.018

Cited by 48 publications

(23 citation statements)

References 2 publications

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“…As much as 85 wt.% of fatty acids were incorporated successfully, and no leakage above the melting point was detected [92]. Mengjin et al [93] prepared fibers of PVA and paraffin using a wet-spinning technique. The thermal regulating fiber had an acceptable thermal stability when the content of paraffin in fiber was below 30%.…”

Section: Other Polymersmentioning

confidence: 99%

Different Phase Change Material Implementations for Thermal Energy Storage

Karkri

Lefèbvre

Royon

2015

The Handbook of Environmental Chemistry

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This paper presents the principal methods available for phase change material (PCM) implementation in different storage applications. The first part is devoted to a non-exhaustive overview of the various chemical processes used to develop stable PCM (such as microencapsulation, emulsion polymerization or suspension polycondensation, polyaddition, etc.) based on the available literature. The second part deals with shape-stabilized PCM, developed from an intimate combination of a polymer matrix and a phase change element. Materials able to include more thermal energy as usual ones are interesting as they increase the thermal inertia of the system that presents by this way advantages. The energy efficiency of buildings may be improved including PCMs that store and provide enthalpy from one hand and without any significant temperature modification during the phase change process on the other hand. If the solid phase of the PCM does not present any problem, it is not the same for the liquid phase which must be maintained mechanically at its assigned location. Furthermore, the PCM in the solid (and furthermore in the liquid phase) does not have mechanical properties which allow to use it as a structural material able to support charge loads. This paper presents different methods to distribute and maintain the PCM in the thermal solid matrix.

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Section: Other Polymersmentioning

confidence: 99%

Different Phase Change Material Implementations for Thermal Energy Storage

Karkri

Lefèbvre

Royon

2015

The Handbook of Environmental Chemistry

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“…Yapýlan literatür çalýþmalarý incelendiðinde, Vigo ve Frost tarafýndan 1982 yýlýnda, içi boþluklu rayon ve polipropilen liflerinin içine sulu hidrat tuzlarýn doldurularak ýsý depolama özellikli lif üretim denemelerinin yapýldýðý görülmektedir [19]. [20]. Parafinlerin mikrokapsüllenmesi konusunda yapýlan çalýþmalar incelendiðinde, farklý doðal ya da sentetik polimerlerin mikrokapsül üretimi için kullanýldýðý görülmektedir.…”

Section: Hidrat ýNorganik Tuzlarunclassified

Faz Değiştiren Maddeler ve Tekstil Uygulamaları

Kuru¹,

Aksoy²

2012

Tekstil ve Mühendis

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Yenilikçi tekstil ürün ve üretim teknolojilerine olan ilgi ve talep hýzlý bir artýþ göstermektedir. Araþtýrmalarýn yoðun bir þekilde devam ettiði yeniliklerden birisi de ýsý depolama ve ýsý düzenleme özellikli akýllý tekstil ürünlerinin geliþtirilmesidir. Bu tekstil ürünleri faz deðiþtiren maddelerin tekstil lif veya kumaþlarýna aplike edilmesi ile üretilmektedir. Faz deðiþtiren maddeleri içeren tekstiller, giysilerde ýsýl konforu geliþtirmek ve ýsý düzenleme, ýsýtma ve serinletme özellikli ürünler üretmek için kullanýlmaktadýrlar. Bu çalýþmada, tekstiller için kullanýlan faz deðiþtiren maddeler (FDM) ve faz deðiþtiren madde içeren mikrokapsüller (MikroFDM) tanýtýlmýþtýr. Ayrýca FDM'nin tekstil ürünlerine aplikasyon yöntemleri de açýklanmýþtýr.

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“…To this end, the first part of the work was aimed at the development of an approach for the preparation of electrospun structures through emulsion electrospinning by using a hydrophilic material [poly(vinyl alcohol), PVOH] to encapsulate a PCM, which melted around 5 °C (RT5). PVOH, aside from being an excellent barrier material to non‐polar substances such as paraffins, is characterized by having good mechanical properties, high gas barrier, chemical stability and being easily electrospinnable from water solutions . To optimize the incorporation of the water insoluble PCM within the hydrophilic PVOH structures a surfactant was incorporated to the polymer‐PCM emulsion to produce stable solutions.…”

Section: Introductionmentioning

confidence: 99%

“…PVOH, aside from being an excellent barrier material to non-polar substances such as paraffins, is characterized by having good mechanical properties, high gas barrier, chemical stability and being easily electrospinnable from water solutions. 15 To optimize the incorporation of the water insoluble PCM within the hydrophilic PVOH structures a surfactant was incorporated to the polymer-PCM emulsion to produce stable solutions.…”

Section: Introductionmentioning

confidence: 99%

Development of an encapsulated phase change material via emulsion and coaxial electrospinning

Chalco-Sandoval

Fabra

López‐Rubio

et al. 2016

J of Applied Polymer Sci

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This article reports on the encapsulation of a phase change material (PCM) into a hydrophilic polymer, poly(vinyl alcohol) (PVOH), by means of electrospinning. Different strategies were carried out to improve the thermal buffering capacity and the stability of the developed structures when they were exposed to different relative humidity (RH) conditions. On the one hand, the thermal energy storage capacity of PVOH/PCM structures obtained through emulsion electrospinning was optimized by using different amounts of polyoxyethylene sorbitan monolaureate (Tween 20). Surfactant addition successfully increased the heat storage capacity of the developed structures, reaching an optimum performance at a concentration of 0.32% in weight with respect to the total emulsion weight. However, the hydrophilic nature of the developed structures made them extremely difficult to handle due to swelling with increasing RH. To avoid this issue an additional shell layer of poly(caprolactone) (PCL), was applied by coaxial electrospinning. In this case, the PVOH/PCM ratio (core) was optimized to reach the highest heat storage capacity per gram of sample and, then, a PCL solution was used as a shell material to hydrophobize the structures. The optimized coaxial electrospun structures were able to encapsulate about 82% of PCM. The use of both emulsion and coaxial electrospinning strategies are introduced here for the first time as advanced strategies to overcome application issues such as unintended migration and performance drop in the previously developed monophase materials.

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Preparation of a new thermal regulating fiber based on PVA and paraffin

Cited by 48 publications

References 2 publications

Different Phase Change Material Implementations for Thermal Energy Storage

Different Phase Change Material Implementations for Thermal Energy Storage

Faz Değiştiren Maddeler ve Tekstil Uygulamaları

Development of an encapsulated phase change material via emulsion and coaxial electrospinning

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