High-pressure atom transfer radical polymerization of methyl methacrylate for well-defined ultrahigh molecular-weight polymers
High-pressure atom transfer radical polymerization of methyl methacrylate for well-defined ultrahigh molecular-weight polymers
复制标题
DOI：
10.1016/j.polymer.2008.03.026
复制
发表时间：
2008-05-13
期刊：
影响因子：
4.6
通讯作者：
Fukuda, Takeshi
中科院分区：
文献类型：
--
作者：
Arita, Toshihiko;Kayama, Yuzo;Fukuda, Takeshi
证明了高压原子转移自由基聚合（ATRP）用于合成明确的超高分子量聚合物的可行性。在 60 摄氏度下研究了甲基丙烯酸甲酯 (MMA) 在高达 500 MPa 压力下的 ATRP。添加少量 Cu(II)Cl-2/配体络合物以及高压增强传播和抑制终止的一般优点，即使使用极低浓度的 ATRP 引发剂，也能实现出色的聚合控制。例如，生产出数均分子量M-n为3.6×10(6)、多分散指数为1.24的PMMA，这是传统ATRP从未达到的。 (c) 2008 Elsevier Ltd. 保留所有权利。
The feasibility of high-pressure atom transfer radical polymerization (ATRP) for synthesizing well-defined polymers of extraordinarily high molecular weights was demonstrated. ATRP of methyl methacrylate (MMA) under pressures up to 500 MPa was investigated at 60 degrees C. The addition of a small amount of a Cu(II)Cl-2/ligand complex along with the general benefits of high pressure of enhancing propagation and suppressing termination brought about an excellent control of polymerization even with an extremely low concentration of ATRP initiator. For example, there was produced PMMA with a number-average molecular weight M-n of 3.6 x 10(6) and a polydispersity index of 1.24, which had never been achieved by conventional ATRP. (c) 2008 Elsevier Ltd. All rights reserved.