# Preparation of core-shell composite particles containing a dye powder by a droplet coalescence method

> Title: Preparation of core-shell composite particles containing a dye powder by a droplet coalescence method Page Range: p.771-778 Author(s): Yoshinari Taguchi; Yu Isono; Kiyomi Fuchigami; Isao Kimura; Masato Tanaka File size: Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers...

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Published: 2014-09-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: Preparation of core-shell composite particles containing a dye powder by a droplet coalescence method**
 Page Range: p.771-778
 Author(s): Yoshinari Taguchi; Yu Isono; Kiyomi Fuchigami; Isao Kimura; Masato Tanaka
 File size:
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc22-9&JournalID=102326&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 22
 Issue No: No.9

**Abstract**
 It was attempted to prepare core-shell composite particles containing a hydrophilic dye powder by a droplet coalescence method using liquid-liquid dispersion. Core particles composed of dye powder and oleic acid have been forced to coalesce with styrene monomer droplets, and then suspension polymerisation has been performed to form the polystyrene shell. In the experiment, the number and diameter of styrene monomer droplets were mainly changed stepwise to promote coalescence between the core particles and the monomer droplets and to control the shell thickness. It was found that the core shell composite particles could be prepared by increasing the monomer droplet number at the constant impeller speed, because the coalescence frequency between the monomer droplets and the core particles increased with the monomer droplet number at the constant impeller speed. Moreover, the diameter and shell thickness of the core shell composite particles increased with the diameter of monomer droplets. 8 Refs.

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