NDLI: Synthesis of a paraffin phase change material microencapsulated in a siloxane polymer

Content Provider	Springer Nature Link
Author	Fortuniak, Witold Slomkowski, Stanislaw Chojwski, Julian Kurjata, Jan Tracz, Adam Mizerska, Urszula
Copyright Year	2012
Abstract	The coemulsification method suitable for the formulation of microcapsules of n-eicosane coated with a polysiloxane is developed. This method allows to synthesize core–shell microcapsules of paraffin which have the shape of spheres or distorted spheres and are designed for the use as phase change materials. The microcapsules are formed in aqueous phase by the precipitation of n-eicosane together with modified polyhydromethylsiloxane from a common solvent which is miscible with aqueous media. The polysiloxane is modified by the attachment of silylvinyl and alkoxy functions before coemulsification with the paraffin. It also contains the Pt(0) Karstedt catalyst. The microcapsules formed by coemulsification are stabilized by the in situ cross-linking of the polysiloxane shell. The shell is additionally modified by the in situ generation of silanol groups which provide colloidal stabilization of microspheres in aqueous phase. Microcapsules were studied by DSC, SEM, optical polarized microscope, and by thermooptical analysis (TOA).
Starting Page	725
Ending Page	733
Page Count	9
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	291
Issue Number	3
e-ISSN	14351536
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-09-07
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	PCM microcapsules Microencapsulation Microencapsulated phase change materials Polyhydromethylsiloxane Microcapsules Karstedt catalyst Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Characterization and Evaluation of Materials Physical Chemistry Food Science
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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