| 摘要 |
A hyperbranched polymer, such as hyperbranched polyvinylalcohol, comprising repeating units derived from a] an unsaturated monomer, such as a vinyl monomer, such as vinyl acetate, vinyl propionate, vinyl butyrate, an N-vinyl monomer such as N-vinyl caprolactam, N-vinyl pyrrolidone, N-vinyl pyrrolidinone, that polymerises via a non-stabilised radical and b] a monomer comprising an ethylenically unsaturated carbonate moiety, such as an alpha-allyl carbonate, a beta-allyl carbonate, a vinyl carbonate and a secondary alkoxy moiety, such as an isopropoxy, isobutoxy moiety. Also disclosed is functionalisation of the hyperbranched polymer using a lipase enzyme and use of the hyperbranched polymer for the controlled release of a drug, a pesticide or a cosmetic. |
