Comb Polymers Prepared by ATRP from Hydroxypropyl Cellulose
2007 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 8, no 4, 1138-1148 p.Article in journal (Refereed) Published
Hydroxypropyl cellulose (HPC) was used as a core molecule for controlled grafting of monomers by ATRP, the aim being to produce densely grafted comb polymers. HPC was either allowed to react with an ATRP initiator or the first generation initiator-functionalized 2,2-bis(methylol)propionic acid dendron to create macroinitiators having high degrees of functionality. The macroinitiators were then "grafted from" using ATRP of methyl methacrylate (MMA) or hexadecyl methacrylate. Block copolymers were obtained by chain extending PMMA-grafted HPCs via the ATRP of tert-butyl acrylate. Subsequent selective acidolysis of the tert-butyl ester moieties was performed to form a block of poly(acrylic acid) resulting in amphiphilic block copolymer grafts. The graft copolymers were characterized by H-1 NMR and FT-IR spectroscopies, DSC, TGA, rheological measurements, DLS, and tapping mode AFM on samples spin coated upon mica. It was found that the comb (co)polymers were in the nanometer size range and that the dendronization had an interesting effect on the rheological properties.
Place, publisher, year, edition, pages
2007. Vol. 8, no 4, 1138-1148 p.
Acrylic monomers; Block copolymers; Chain length; Ethers; Graft copolymers; Grafting (chemical); Initiators (chemical); Monomers; Polymethyl methacrylates; Rheology; Comb polymers; Hexadecyl methacrylate; Macroinitiators; Selective acidolysis; Cellulose derivatives; acrylic acid butyl ester; copolymer; hydroxypropylcellulose; methacrylic acid methyl ester; polyacrylic acid; polymer; propionic acid derivative; article; atom transfer radical polymerization; atomic force microscopy; chemical reaction; chemical structure; differential scanning calorimetry; gel permeation chromatography; infrared spectroscopy; light scattering; priority journal; proton nuclear magnetic resonance; synthesis; thermogravimetry; Carbohydrate Conformation; Carbohydrate Sequence; Cellulose; Molecular Sequence Data; Particle Size; Polymers; Rheology; Temperature; Acidolysis; Acrylates; Block Copolymers; Catalysts; Copolymerization; Degree Of Polymerization; Graft Copolymers; Hydroxypropyl Cellulose; Methyl Methacrylate; Monomers; Rheology
IdentifiersURN: urn:nbn:se:kth:diva-7710DOI: 10.1021/bm061043wISI: 000245510100013ScopusID: 2-s2.0-34247640609OAI: oai:DiVA.org:kth-7710DiVA: diva2:12815
QC 201008262007-11-232007-11-232010-08-26Bibliographically approved