Lewis acid-surfactant complex catalyzed polymerization in aqueous dispersed media: cationic or radical polymerization?

2020 ◽  
Vol 11 (36) ◽  
pp. 5757-5766
Author(s):  
Aurélie Destephen ◽  
Luis Lezama ◽  
Nicholas Ballard
Keyword(s):  
Radical Polymerization ◽  
Lewis Acid ◽  
Surfactant Complex ◽  
Dispersed Media ◽  
Aqueous Dispersed Media ◽  
Catalyzed Polymerization

Evidence is presented that shows Lewis acid-surfactant complex catalyzed polymerization proceeds via a radical, not a cationic, mechanism.

scholarly journals Radical polymerization of biobased monomers in aqueous dispersed media

2019 ◽  
Vol 21 (1) ◽  
pp. 36-53 ◽  
Author(s):  
Samantha Molina-Gutiérrez ◽  
Vincent Ladmiral ◽  
Roberta Bongiovanni ◽  
Sylvain Caillol ◽  
Patrick Lacroix-Desmazes
Keyword(s):  
Radical Polymerization ◽  
Renewable Resources ◽  
Dispersed Media ◽  
Aqueous Dispersed Media

This review highlights the synthesis of biobased monomers from renewable resources for the preparation of polymers by (mini)emulsion and suspension polymerizations.

Controlled Radical Polymerization in Aqueous Dispersed Media

2006 ◽  
Vol 59 (10) ◽  
pp. 693 ◽  
Author(s):  
Maud Save ◽  
Yohann Guillaneuf ◽  
Robert G. Gilbert
Keyword(s):  
Free Radical ◽  
Emulsion Polymerization ◽  
Radical Polymerization ◽  
Large Scale ◽  
Colloidal Stability ◽  
Free Radical Polymerization ◽  
Controlled Radical Polymerization ◽  
Wide Range ◽  
Dispersed Media ◽  
Aqueous Dispersed Media

Controlled radical polymerization (CRP), sometimes also termed ‘living’ radical polymerization, offers the potential to create a wide range of polymer architectures, and its implementation in aqueous dispersed media (e.g. emulsion polymerization, used on a vast scale industrially) opens the way to large-scale manufacture of products based on this technique. Until recently, implementing CRP in aqueous dispersed media was plagued with problems such as loss of ‘living’ character and loss of colloidal stability. This review examines the basic mechanistic processes in free-radical polymerization in aqueous dispersed media (e.g. emulsion polymerization), and then examines, through this mechanistic understanding, the new techniques that have been developed over the last few years to implement CRP successfully in emulsion polymerizations and related processes. The strategies leading to these successes can thus be understood in terms of the various mechanisms which dominate CRP systems in dispersed media; these mechanisms are sometimes quite different from those in conventional free-radical polymerization in these media.

scholarly journals Atom transfer radical polymerization in aqueous dispersed media

2009 ◽  
Vol 7 (4) ◽  
pp. 657-674 ◽  
Author(s):  
Ke Min ◽  
Krzysztof Matyjaszewski
Keyword(s):  
Molecular Weight ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Colloidal Stability ◽  
Atom Transfer ◽  
Recent Developments ◽  
Dispersed Media ◽  
Aqueous Dispersed Media ◽  
Significant Attention ◽  
Important Progress

AbstractDuring the last decade, atom transfer radical polymerization (ATRP) received significant attention due to its exceptional capability of synthesizing polymers with pre-determined molecular weight, well-defined molecular architectures and various functionalities. It is economically and environmentally attractive to adopt ATRP to aqueous dispersed media, although the process is challenging. This review summarizes recent developments of conducting ATRP in aqueous dispersed media. The issues related to retaining “controlled/living” character as well as colloidal stability during the polymerization have to be considered. Better understanding the ATRP mechanism and development of new initiation techniques, such as activators generated by electron transfer (AGET) significantly facilitated ATRP in aqueous systems. This review covers the most important progress of ATRP in dispersed media from 1998 to 2009, including miniemulsion, microemulsion, emulsion, suspension and dispersed polymerization.

Efficient Lewis Acid-Catalyzed Stereocontrolled Radical Polymerization of Acrylamides

2001 ◽  
Vol 123 (29) ◽  
pp. 7180-7181 ◽  
Author(s):  
Yutaka Isobe ◽  
Daigo Fujioka ◽  
Shigeki Habaue ◽  
Yoshio Okamoto
Keyword(s):  
Radical Polymerization ◽  
Lewis Acid ◽  
Acid Catalyzed

Tuning photosensitized singlet oxygen production from microgels synthesized by polymerization in aqueous dispersed media

2019 ◽  
Vol 10 (23) ◽  
pp. 3170-3179 ◽  
Author(s):  
Luca Petrizza ◽  
Mickael Le Bechec ◽  
Emile Decompte ◽  
Hind El Hadri ◽  
Sylvie Lacombe ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Vinyl Acetate ◽  
Rose Bengal ◽  
Oxygen Production ◽  
Polymer Colloids ◽  
Grafted Polymer ◽  
Dispersed Media ◽  
Aqueous Dispersed Media ◽  
Vinyl Benzyl

Miniemulsion copolymerization of vinyl acetate, N-vinylcaprolactam, vinyl benzyl Rose Bengal and divinyl adipate to synthesize switchable photosensitizer-grafted polymer colloids for interfacial photooxygenation reactions.

scholarly journals Functionalized polycarbonates via triphenylborane catalyzed polymerization-hydrosilylation

RSC Advances ◽  
2019 ◽  
Vol 9 (46) ◽  
pp. 26542-26546 ◽  
Author(s):  
Kori A. Andrea ◽  
Francesca M. Kerton
Keyword(s):  
Carbon Dioxide ◽  
Lewis Acid ◽  
Base Pair ◽  
Functional Polymers ◽  
Tandem Catalysis ◽  
Acid Base ◽  
Catalyzed Polymerization

Lewis acid-base pair can be used to make functional polymers from carbon dioxide in a single-pot through tandem catalysis.

Polymerizations in Aqueous Dispersed Media

2011 ◽  
pp. 605-642
Author(s):  
Bernadette Charleux ◽  
François Ganachaud
Keyword(s):  
Dispersed Media ◽  
Aqueous Dispersed Media
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