Unimolecular Nanocontainers Prepared by ROP and Subsequent ATRP from Hydroxypropylcellulose
2008 (English)In: Macromolecules, ISSN 0024-9297, E-ISSN 1520-5835, Vol. 41, no 12, 4405-4415 p.Article in journal (Refereed) Published
Hydroxypropylcellulose (HPC) is used as a macroinitiator for ring-opening polymerization of epsilon-caprolactone for the synthesis of a high molecular weight comb polymer consisting of a cellulose backbone and PCL grafts. The PCL end groups are converted into initiating sites for ATRP and chain extension of the PCL block is performed through grafting of tert-butyl acrylate to different lengths. The comb block copolymers are thereafter converted to amphiphilic polymers through deprotection of the tert-butyl group by acidic treatment, resulting in PCL-block-PAA grafts. These block copolymers are suspended in water and cross-linked using a water-soluble diamine to different attempted cross-link densities. Initial studies of the solubilization and encapsulation capacities of the amphiphilic polymers are performed using the hydrophobic model compound pyrene.
Place, publisher, year, edition, pages
2008. Vol. 41, no 12, 4405-4415 p.
Amines; Arsenic compounds; Atom transfer radical polymerization; Block copolymers; Chemical reactions; Complexation; Copolymerization; Copolymers; Crosslinking; Encapsulation; Monomers; Plastic products; Polymerization; Ring opening polymerization; Synthesis (chemical); Acidic treatment; American Chemical Society (ACS); Amphiphilic polymers; Butyl acrylate (BuA); Butyl group; Caprolactone (PCL); Chain extensions; Cross-link densities; De-protection; End groups; High-molecular weight (HMW); Hydrophobic model; Hydroxypropyl cellulose (HPC); Macro initiators; Nanocontainers; Ring opening polymerization (ROP); Unimolecular; Polymers
IdentifiersURN: urn:nbn:se:kth:diva-7711DOI: 10.1021/ma702681uISI: 000256843100047ScopusID: 2-s2.0-47249111376OAI: oai:DiVA.org:kth-7711DiVA: diva2:12816
QC 20100826. Uppdaterad från Submitted till Published 20100826.2007-11-232007-11-232010-08-26Bibliographically approved