期刊
POLYMER CHEMISTRY
卷 1, 期 2, 页码 221-230出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b9py00320g
关键词
-
资金
- University of Sheffield
- Society-Wolfson Research Merit Award
- ESR
A series of well-defined primary amine-based AB diblock copolymers were synthesised via atom transfer radical polymerisation (ATRP) using 2-aminoethyl methacrylate hydrochloride (AMA), with the other block comprising the following comonomers: 2-(diisopropylamino)ethyl methacrylate (DPA), 2-hydroxypropyl methacrylate (HPMA) and 2-(methacryloyloxy)ethyl phosphorylcholine (MPC). These copolymers were prepared with reasonably narrow polydispersities (M(w)/M(n) approximate to 1.1-1.4) in either 80: 20 or 95: 5 2-propanol-water mixtures at 50 degrees C using a 2-(N-morpholino)ethyl isobutyryl bromide initiator. The chain extension efficiency of PAMA was also investigated using a further charge of AMA. Unfortunately, such 'self-blocking' was problematic due to both catalyst deactivation and termination of the living chain ends. Nevertheless, low polydispersity all-methacrylic diblock copolymers were obtained in high yields via sequential monomer addition, provided that AMA was used as the second monomer in such syntheses. PAMA(49) homopolymer and selected PAMA-based copolymers were reacted with various acrylates and acrylamides in aqueous solution at pH 9, with mean degrees of functionalisation being determined by (1)H NMR spectroscopy. This facile Michael addition chemistry provides access to a library of novel functional water-soluble homopolymers and diblock copolymers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据