ATRP mediated encapsulation of Gibbsite: fixation of the morphology by using a cross-linker. Issue 19 (4th May 2017)

• Record Type: Journal Article
• Authors: Loiko, Olessya P.; Spoelstra, Anne B.; van Herk, Alexander M.; Meuldijk, Jan; Heuts, Johan P. A.
• Is Part Of: Polymer chemistry. Volume 8:Issue 19(2017)
• Page Start: 2909
• Page End: 2912
• Publication Date: 2017-05-04
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c7py00226b
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Gibbsite platelets were successfully encapsulated using a cross-linker in ATRP-mediated starved feed emulsion polymerisation. Abstract : Using ethylene glycol dimethacrylate (EGDMA) as a cross-linker Gibbsite platelets were successfully encapsulated fully using an ATRP-mediated emulsion polymerisation technique. Previously we reported a "muffin-like" morphology, which was obtained using the same approach without a cross-linker. This morphology was attributed to the mobility of the growing polymeric chains, allowing them to move one side of the platelet during the reaction. The addition of EGDMA reduces this mobility and it is shown that this approach indeed leads to encapsulated Gibbsite. A comprehensive study of the reaction conditions, in particular the cross-linker addition profile and concentration, was carried out in combination with cryo-TEM characterization of the final particle morphology.