Unimolecular Nanocontainers Prepared by ROP and Subsequent ATRP from Hydroxypropylcellulose
| Autor: | Emma Östmark, Eva Malmström, Daniel Nyström |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Acrylate Polymers and Plastics Organic Chemistry technology industry and agriculture Chemical modification macromolecular substances Polymer Ring-opening polymerization Inorganic Chemistry chemistry.chemical_compound chemistry Polymerization Diamine Polymer chemistry Materials Chemistry Copolymer Cellulose |
| Zdroj: | Macromolecules. 41:4405-4415 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/ma702681u |
| Popis: | Hydroxypropylcellulose (HPC) is used as a macroinitiator for ring-opening polymerization of e-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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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