Large Scale Synthesis of Janus Submicrometer Sized Colloids by Seeded Emulsion Polymerization

We present a facile approach to produce submicrometer sized Janus PAN/PS polymer colloids by seeded emulsion polymerization. Both high cross-linking degree and slow feeding monomer are crucial to control the resultant anisotropic structure. The PAN seed is cross-linked, ensuring that the formed PS b...

Full description

Saved in:
Bibliographic Details
Published in:Macromolecules 2010-06, Vol.43 (11), p.5114-5120
Main Authors: Tang, Chen, Zhang, Chengliang, Liu, Jiguang, Qu, Xiaozhong, Li, Jiaoli, Yang, Zhenzhong
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Organic polymers
Physicochemistry of polymers
Polymer industry, paints, wood
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
Technology of polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present a facile approach to produce submicrometer sized Janus PAN/PS polymer colloids by seeded emulsion polymerization. Both high cross-linking degree and slow feeding monomer are crucial to control the resultant anisotropic structure. The PAN seed is cross-linked, ensuring that the formed PS bulge contains no PAN. The two different polymers are distinct compartmentalized onto the surface. Other Janus composite colloids with varied composition and microstructure are derived by selective modification of desired polymer part and following favorable growth of other materials therein. The Janus colloids can serve as solid surfactants to emulsify oil/water immiscible mixtures, which have a well-defined orientation at the interface. The method can be scaled up to produce large quantity of submicrometer sized Janus colloids.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma100437t