Advertisements

One-pot Synthesis of Non-spherical Hollow Latex Polymeric Particles via Seeded Emulsion Polymerization

Non-spherical (ns) hollow latex (HL) particle with a void on one side of a polymer particle surrounded by a double-layered shell was fabricated via the one-pot seeded emulsion polymerization (SEP). Start from the ns seed formed by swelling styrene (St) or methyl methacrylate (MMA) mixed with azobisisobutyronitrile into a crosslinked spherical poly(styrene/divinyl benzene/acrylic acid) P(St/DVB/AA) particle and then polymerized. The ns seed particle having two lobes of crosslinked P(St/DVB/AA) and polystyrene (PS) protrusion obtained was then swelled with MMA/DVB/AA monomers (MMA:DVB = 1:2). After polymerization, the obtained ns HL particle with a single void on the PS side was generated without the seed removal. The key success factors are the locus of polymerization at the seed surface and the fast/efficient phase separation between PS seed and shell polymers. The double-layered shell composing of PS inner shell and P(DVB/MMA/AA) outer shell prevented the collapse of hollow structure. The ns HL particles (0.79 μm in diameter and 1.04 μm in over length) as a white pigment in the coating had a hiding power better than ns solid particles (ASTM D2803-96a, 2003).

Explore further

Available online 14 June 2017

Advertisements

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

SUBSCRIBE TO OUR NEWSLETTER

You have successfully subscribed to the newsletter

There was an error while trying to send your request. Please try again.

Paints and Coatings Expert will use the information you provide on this form to be in touch with you and to provide updates and marketing.
%d bloggers like this: