Show simple item record

dc.contributor.authorPalaniswamy, R.
dc.contributor.authorWang, C
dc.contributor.authorTam, Michael K. C.
dc.contributor.authorGan, L.H.
dc.date.accessioned2003-12-08T15:00:51Z
dc.date.available2003-12-08T15:00:51Z
dc.date.issued2003-01
dc.identifier.urihttp://hdl.handle.net/1721.1/3775
dc.description.abstractAtom transfer radical polymerisation (ATRP) technique was used to synthesize poly(methacrylic acid-block-methyl methacrylate) (P(MAA₁₀₂-b-MMA₁₀)) copolymer in order to study the aggregation behavior in aqueous solution over the course of neutralization. A combination of static and dynamic light scattering (SLS, DLS) and potentiometric titration techniques were used to investigate the size and shape of the micelle at various degrees of neutralization. The hydrodynamic radius (Rh) determined from dynamic light scattering increases from ~26nm (for unneutralized) to ~42nm (for completely neutralized sample). Both potentiometric and laser light scattering studies indicate the formation of a core shell micelle. The weighted average molecular weights of the polymer and micelle are 1.18x10⁴ and 2.25 x 10⁵ g/mol respectively, which suggests that the aggregation number of the micelle is ~20.en
dc.description.sponsorshipSingapore-MIT Alliance (SMA)en
dc.format.extent351681 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.relation.ispartofseriesMolecular Engineering of Biological and Chemical Systems (MEBCS);
dc.subjectATRPen
dc.subjectaggregation numberen
dc.subjectcore shell micelleen
dc.subjectlight scatteringen
dc.subjectpotentiometric titrationen
dc.titleAssociation Behavior of Poly(methacrylic acid)-block-Poly(methyl methacrylate) in Aqueous Medium: Potentiometric and Laser Light Scattering Studiesen
dc.typeArticleen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record