Preparation and properties of high thermostability phase-change material microcapsules

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F18%3A00005913" target="_blank" >RIV/46747885:24410/18:00005913 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Preparation and properties of high thermostability phase-change material microcapsules

Original language description

Microcapsules containing phase change materials (PCM) are commonly used in many energy storage fields. However, most PCM microcapsules have lower themostability with an onset decomposition temperature of about 150°C, which to some extent restricts their application. In this study, high thermostability PCM microcapsules were synthesized with long chain ester as PCM and PMMA as shell. During the preparation, high chain ester of dodecanol laurate was first synthesized by an esterification reaction under catalysis, then the ester as core material was encapsulated using PMMA by emulsion polymerization. The resultant products were characterized by infrared spectroscopy (IR), differential scanning calorimeter (DSC), thermogravimetry (TG), laser particle size analyzer and scanning electron microscope (SEM). The synthesized dodecanol laurate have a high purity according to the IR spectrum analysis with a suitable phase temperature range of 22-30°C. In addition, the ester also shows good thermal properties with latent heat of 206 J/g, small super-cooling degree of 0.5°C and high thermal evaporation temperature of 220°C, which is very suitable for applying in PCM energy storage materials. Using the above ester as core material, the PCM microcapsules were successfully fabricated by emulsification and polymerization. The prepared microcapsules had a perfect spherical shape with about a diameter of about 865 nm as well as a high heat storage performance with a latent energy of 118 J/g. Due to the high evaporation temperature of the ester core material itself, and with further encapsulation, the prepared PCM microcapsules demonstrated higher thermostability. TG results suggest that the microcapsules have a high onset weight loss temperature of over 252°C due to the encapsulation of PMMA, it is a significant increment when compared to PCM microcapsules reported by most literatures.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20503 - Textiles; including synthetic dyes, colours, fibres (nanoscale materials to be 2.10; biomaterials to be 2.9)

Project

<a href="/en/project/LTACH17014" target="_blank" >LTACH17014: Design, optimisation and application of smart thermal storage nano-layers</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Textile Bioengineering and Informatics Symposium Proceedings 2018

ISBN

978-1-5108-7035-2

ISSN

1942-3438

e-ISSN

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Number of pages

8

Pages from-to

840-847

Publisher name

Binary Information Press

Place of publication

China

Event location

Manchester, UK

Event date

Jan 1, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000459853100111