Nippon Shokubai and RIKEN developed the efficient polymerization system for biomass-derived hardly polymerizable monomers

2020 ◽  
Vol 2020 (12) ◽  
pp. 5-6
Keyword(s):  
Polymerization System

Olefin insertion in a metal alkyl in a Ziegler polymerization system

1985 ◽  
Vol 107 (11) ◽  
pp. 3377-3378 ◽  
Author(s):  
Leigh Clawson ◽  
Jorge Soto ◽  
Stephen L. Buchwald ◽  
Michael L. Steigerwald ◽  
Robert H. Grubbs
Keyword(s):  
Polymerization System

Unusual Phase Inversion Behavior in an Emulsion Polymerization System Caused by Ammonia

2010 ◽  
Vol 39 (3) ◽  
pp. 274-275 ◽  
Author(s):  
Mingxian Liu ◽  
Lihua Gan ◽  
Zijie Xu ◽  
Longwu Chen ◽  
Jun Hu ◽  
...  
Keyword(s):  
Emulsion Polymerization ◽  
Phase Inversion ◽  
Polymerization System

Preparation of Highly Conductive Polyaniline in Carbamide Aqueous Solution Using SnCl4 as Initiator

2012 ◽  
Vol 476-478 ◽  
pp. 2205-2208 ◽  
Author(s):  
Guan Nan Lin ◽  
Qun Yu ◽  
Wei Wang ◽  
Gui Bao Wang
Keyword(s):  
Aqueous Solution ◽  
Ammonium Persulfate ◽  
Conductivity Measurements ◽  
X Ray ◽  
New Class ◽  
Vis Spectroscopy ◽  
Polymerization System ◽  
Novel Method ◽  
Conductive Polyaniline ◽  
Hydrolysis Of

In this paper, we demonstrated a novel method for the preparation of highly conductive polyaniline (PANI) compounded with Sn(OH)4. We obtained the PANI directly in the oxidation polymerization system via simultaneous reaction of aniline (using ammonium persulfate, APS as oxidant) and SnCl4 in carbamide aqueous solution. The resulting PANI was compounded with Sn(OH)4 had been characterized by FTIR, UV-Vis spectroscopy, X-ray diffractometry, thermal analysis, scanning electron microscope and conductivity measurements, and the results showed that PANI was in well doped state due to the hydrolysis of APS and the complex between PANI and Sn(OH)4. We are sure this alkali-guided polymerization to obtain conductive PANI will lead to the preparation of a new class of PANI composites.

scholarly journals Visible Light-Controlled Living Cationic Polymerization of Methoxystyrene

2021 ◽  
Author(s):  
Lei Wang ◽  
Shaodong Zhang ◽  
Yongfeng Zhou ◽  
Yupo Xu ◽  
Quan Zuo ◽  
...  
Keyword(s):  
Visible Light ◽  
Cationic Polymerization ◽  
Molar Mass ◽  
Chain Transfer ◽  
Polymerization Reaction ◽  
Great Success ◽  
Living Cationic Polymerization ◽  
Green Led ◽  
Polymerization System ◽  
Lytic System

Photo-controlled living polymerization has received great attention in recent years. However, despite the great success therein, the report on photo-controlled living cationic polymerization has been greatly limited. We demonstrate here a novel decolorable, metal-free and visible light-controlled living cationic polymerization system by using tris(2,4-dimethoxyphenyl)methylium tetrafluoroborate as the photocatalyst and phosphate as the chain transfer agent (CTA) for polymerization of 4-methoxystyrene. This polymerization reaction under green LED light irradiation shows clear living characteristics including predictable molar mass, narrow molar-mass dispersity (Đ = 1.25), and sequential polymerization capability. In addition, the photocata-lytic system exits excellent “on-off” photo switchability and shows the longest “off period” of 36 h up to now for photo-controlled cationic polymerization. Furthermore, the residual photo-catalyst is easily deactivated and decolored with addition of a base after the polymerization.

One-Pot Three-Step Polymerization System Using Double Click Michael Addition and Radical Photopolymerization

2015 ◽  
Vol 4 (12) ◽  
pp. 1327-1331 ◽  
Author(s):  
Matthieu Retailleau ◽  
Ahmad Ibrahim ◽  
Céline Croutxé-Barghorn ◽  
Xavier Allonas ◽  
Christian Ley ◽  
...  
Keyword(s):  
Michael Addition ◽  
One Pot ◽  
Polymerization System ◽  
Step Polymerization
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