Preparation of block copolymer particles by two-step, reversible chain transfer catalyzed polymerization (RTCP) with nitrogen catalyst in miniemulsion systems

2012 ◽  
Vol 3 (6) ◽  
pp. 1394 ◽  
Author(s):  
Yukiya Kitayama ◽  
Mika Yorizane ◽  
Hideto Minami ◽  
Masayoshi Okubo
Keyword(s):  
Block Copolymer ◽  
Chain Transfer ◽  
Reversible Chain Transfer ◽  
Catalyzed Polymerization

Reversible Chain Transfer Catalyzed Polymerization of Methyl Methacrylate with In-Situ Formed Alkyl Iodide Initiator

2009 ◽  
Vol 62 (11) ◽  
pp. 1492 ◽  
Author(s):  
Atsushi Goto ◽  
Koji Nagasawa ◽  
Ayaka Shinjo ◽  
Yoshinobu Tsujii ◽  
Takeshi Fukuda
Keyword(s):  
Methyl Methacrylate ◽  
Chain Transfer ◽  
Alkyl Iodide ◽  
Nitrogen And Phosphorus ◽  
Molecular Weights ◽  
Living Radical Polymerizations ◽  
Low Mass ◽  
Reversible Chain Transfer ◽  
Catalyzed Polymerization

A method utilizing generation of an alkyl iodide (low-mass dormant species) in situ formed in polymerization was adopted to reversible chain transfer catalyzed polymerizations (RTCP) (living radical polymerizations) with several nitrogen and phosphorus catalysts. The polymerization of methyl methacrylate afforded low-polydispersity polymers (Mw/Mn ~1.2–1.4), with Mn values predicted to high conversions; where Mn and Mw are the number- and weight-average molecular weights respectively. This method is robust and would enhance the utility of RTCP.

Triphenylphosphine as phosphorus catalyst for reversible chain-transfer catalyzed polymerization (RTCP)

2013 ◽  
Vol 4 (10) ◽  
pp. 3069 ◽  
Author(s):  
Liangjiu Bai ◽  
Lifen Zhang ◽  
Yuan Liu ◽  
Xiangqiang Pan ◽  
Zhenping Cheng ◽  
...  
Keyword(s):  
Chain Transfer ◽  
Reversible Chain Transfer ◽  
Catalyzed Polymerization

Reversible Chain Transfer Catalyzed Polymerization (RTCP) of Methyl Methacrylate with Nitrogen Catalyst in an Aqueous Microsuspension System

2010 ◽  
Vol 43 (21) ◽  
pp. 8703-8705 ◽  
Author(s):  
Mika Yorizane ◽  
Takashi Nagasuga ◽  
Yukiya Kitayama ◽  
Atsushi Tanaka ◽  
Hideto Minami ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Chain Transfer ◽  
Reversible Chain Transfer ◽  
Catalyzed Polymerization
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