Shell-crosslinked nanostructures from amphiphilic AB and ABA block copolymers of styrene-alt-(maleic anhydride) and styrene: polymerization, assembly and stabilization in one pot
Logic-Controlled Radical Polymerization with Heat and Light: Multiple-Stimuli Switching of Polymer Chain Growth via a Recyclable, Thermally Responsive Gel Photoredox Catalyst
作者:Mao Chen、Shihong Deng、Yuwei Gu、Jun Lin、Michelle J. MacLeod、Jeremiah A. Johnson
DOI:10.1021/jacs.6b10345
日期:2017.2.15
combinations of three stimuli were required to induce polymer chain growth. Finally, block copolymer synthesis and catalyst recycling were demonstrated. Logic-controlled polymerization with Gel-PTH offers a straightforward approach to achieve multiplexed external switching of polymer chain growth using a single catalyst without the need for addition of exogenous reagents.
A facile route to segmented copolymers by fusing ambient temperature step-growth and RAFT polymerization
作者:Thomas Gegenhuber、Alexander M. Schenzel、Anja S. Goldmann、Per B. Zetterlund、Christopher Barner-Kowollik
DOI:10.1039/c7cc06347d
日期:——
WWe introduce the synthesis of segmented copolymers via a catalyst-free Diels-Alder (DA) reaction at ambient temperature via step-growth (SG) polymerization and subsequent RAFT polymerization. Highmolecularweight SG polymers are readily obtained (Mw = 40,000 g∙mol-1), featuring trithiocarbonate groups in their lateral chain, which allow rapid monomer insertion via reversible addition fragmentation
我们在环境温度下通过无步增长(SG)聚合和随后的RAFT聚合,通过无催化剂的Diels-Alder(DA)反应引入链段共聚物的合成。容易获得高分子量SG聚合物(M w = 40,000 g∙mol -1),其侧链具有三硫代碳酸酯基团,可通过可逆加成断裂链转移(RAFT)聚合反应快速插入单体。
PROCESS FOR TRANSFORMING THE END GROUPS OF POLYMERS
申请人:Moad Graeme
公开号:US20100137548A1
公开(公告)日:2010-06-03
The present invention is directed to a process for the cleavage of one or more starting polymers having thiocarbonylthio groups of the formula (I) into derived polymers in which the —S—(C═S)— group is transformed. The process includes contacting the starting polymer containing groups Y
b
with one or more reagents containing groups X
a
to produce the derived polymer and a byproduct containing the groups Y
b
, wherein the groups X
a
is one or more reactive groups and the groups Y
b
is an extracting group and a byproduct, which is then separated from the derived polymer by conventional separation processes. The derived polymer is free from odor or color that is sometimes associated with the starting polymer and it can be used in making optical lenses, such as high refractive index spectacle lenses.
<i>In Situ</i>
Synthesis of Branched Block Copolymer Assemblies via
<scp>RAFT</scp>
Dispersion Polymerization Using Branched
<scp>Macro‐RAFT</scp>
Agents
<sup>†</sup>
作者:Shanzhi Zhao、Li Zhang、Jianbo Tan
DOI:10.1002/cjoc.202200761
日期:——
(DP) of the core-forming block, and DP of the solvophilic segment on morphologies of branched blockcopolymer assemblies were investigated in detail. Size exclusion chromatography (SEC) analysis further confirmed the successful formation of branched blockcopolymers by using branched macro-RAFT agents. This work on the synthesis of branched blockcopolymer assemblies by RAFT dispersion polymerization
Polymer obtained by the use of RAFT-agents and process of encapsulating of particulate material by said polymer.
申请人:The University of Sydney
公开号:EP2172491A1
公开(公告)日:2010-04-07
Polymer encapsulated particulate material that is 100 microns or less in size, wherein:
(a) said particulate material is encapsulated in a substantially uniform and continuous coating of a polymer which has at least in part been formed under the control of a RAFT agent; or
(b) the polymer which encapsulates the particulate material has at least in part been formed under the control of a RAFT agent, and wherein the particulate material is substantially uniformly dispersed throughout the polymer.