Investigation on the atom transfer nitroxide radical polymerization (ATNRP) mechanism and its versatile applications for bimodal polymers
Investigation on the atom transfer nitroxide radical polymerization (ATNRP) mechanism and its versatile applications for bimodal polymers
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原子转移硝基氧自由基聚合（ATNRP）机理及其在双峰聚合物中的多功能应用研究
DOI：
10.1016/j.polymer.2019.121852
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发表时间：
2019-11
期刊：
影响因子：
4.6
通讯作者：
Guowei Wang
中科院分区：
文献类型：
--
作者：
Wenguang Song;Jian Huang;Chenyan Liu;Xuepu Wang;Guowei Wang
原子转移自由基聚合（ATNRP）是在协同发生的氮氧化物自由基偶联（NRC）反应、原子转移自由基聚合（ATRP）和氮氧化物介导自由基聚合（NMRP）过程的基础上发展起来的。系统研究了苯乙烯（St）和丙烯酸叔丁酯（tBA）单体在不同温度、不同摩尔比[HO-TEMPO]0/[EBiB]0条件下的ATNRP反应。在St的情况下，ATRP和NMRP都可以组合成ATNRP技术，但随着[HO-TEMPO]0/[EBiB]0的增加，聚合速率降低。随着温度的升高，聚合反应速度加快。另外，在tba的情况下，随着HO-TMEPO剂的加入，部分PtBA被h萃取或歧化的副反应终止。剩余的PtBA仍然被溴化基团官能团化，并且ATRP仍然可以继续用于双峰PtBA。最后，得到的PS或PtBA可以被tba或St进一步交叉链延伸，从而生成双峰双嵌段共聚物。[HO-TEMPO]0/[EBiB]0的用量可以很好地控制所得的双峰均聚物或二嵌段共聚物的组成。
The atom transfer nitroxide radical polymerization (ATNRP) was developed based on the synergistically happened nitroxide radical coupling (NRC) reaction, atom transfer radical polymerization (ATRP) and nitroxide mediated radical polymerization (NMRP) procedures. The ATNRP of styrene (St) andtert-butyl acrylate (tBA) monomers were systematically studied at different temperature with various molar ratio of [HO-TEMPO]0/[EBiB]0. In the case of St, both ATRP and NMRP can be combined into an ATNRP technique, while the polymerization rate was lowered with the increase of [HO-TEMPO]0/[EBiB]0. With the increase of temperature, the polymerization showed an increased polymerization rate. Alternatively, in the case oftBA, with the addition of HO-TMEPO agent, partial PtBA was terminated by the side reactions of H-abstraction or disproportionation. The remained PtBA was still functionalized with bromide group, and the ATRP can be still continued for a bimodal PtBA. Finally, the resulted PS or PtBA can be further cross-chain-extended bytBA or St, and the bimodal diblock copolymers can be generated. The compositions of the obtained bimodal homopolymer or diblock copolymer can be well controlled by the amount of [HO-TEMPO]0/[EBiB]0.
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影响因子：
5.5
作者：
Wang, Guowei;Schmitt, Michael;Matyjaszewski, Krzysztof
通讯作者：
Matyjaszewski, Krzysztof
通过新型硝基氧自由基偶联一步生长聚合机制合成热降解聚烷氧基胺
影响因子：
5.5
作者：
Wang, Xuepu;Wang, Guowei
通讯作者：
Wang, Guowei
DOI：
10.1002/chin.200147279
发表时间：
2001-11
期刊：
ChemInform
影响因子：
--
作者：
Krzysztof Matyjaszewski;J. Xia
通讯作者：
Krzysztof Matyjaszewski;J. Xia
影响因子：
5.5
作者：
Jiajun Yan;Tyler Kristufek;M. Schmitt;Zongyu Wang;Guojun Xie;Alei Dang;C. Hui;J. Pietrasik;M. Bockstaller;K. Matyjaszewski
通讯作者：
Jiajun Yan;Tyler Kristufek;M. Schmitt;Zongyu Wang;Guojun Xie;Alei Dang;C. Hui;J. Pietrasik;M. Bockstaller;K. Matyjaszewski
影响因子：
1.1
作者：
J. Kulis;C. Bell;A. Micallef;M. Monteiro
通讯作者：
J. Kulis;C. Bell;A. Micallef;M. Monteiro