期刊
ACS MACRO LETTERS
卷 1, 期 9, 页码 1094-1097出版社
AMER CHEMICAL SOC
DOI: 10.1021/mz300265z
关键词
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资金
- Excellence Initiative [DFG/GSC 266]
- Max Planck Graduate Center
- Johannes Gutenberg-Universitat Mainz (MPGC)
- Fonds der Chemischen Industrie
- SFB [625]
The introduction of acid-degradable acetal moieties into a hyperbranched polyether backbone has been achieved by the design of a novel epoxide-based degradable inimer. This new monomer, namely, 1-(glycidyloxy)ethyl ethylene glycol ether (GEGE), has been copolymerized in the anionic ring-opening polymerization (AROP) with ethylene oxide (EO) or glycidol (G), respectively, yielding branched polyethers, that is, P(EO-co-GEGE) and P(G-co-GEGE), that possess an adjustable amount of acid-cleavable acetal units. In addition, a novel class of multiarm star copolymers P(G-co-GEGE-g-EO) with acid-labile polyether core and PEG side chains was synthesized by using the P(G-co-GEGE) copolymers as multifunctional macroinitiators for AROP of EO. The new materials have been characterized in a detailed manner, revealing narrow to moderate molecular weight distributions. The degradation of these polymers under acidic conditions was characterized via SEC and H-1 NMR spectroscopy.
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