RuH2(PPh3)4:  An Active Catalyst for Living Radical Polymerization of Methyl Methacrylate at or above Room Temperature1

1999 ◽  
Vol 32 (20) ◽  
pp. 6461-6465 ◽  
Author(s):  
Hidenori Takahashi ◽  
Tsuyoshi Ando ◽  
Masami Kamigaito ◽  
Mitsuo Sawamoto
2006 ◽  
Vol 006 (3) ◽  
pp. 549-552 ◽  
Author(s):  
Guoqiao LAI ◽  
Ziqiang HU ◽  
Jirong WU ◽  
Lianbin WU ◽  
Yingzhi LI

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 874 ◽  
Author(s):  
Adhigan Murali ◽  
Srinivasan Sampath ◽  
Boopathi Appukutti Achuthan ◽  
Mohan Sakar ◽  
Suryanarayanan Chandrasekaran ◽  
...  

Polymer nanocomposites have been synthesized by the covalent addition of bromide-functionalized graphene (Graphene-Br) through the single electron transfer-living radical polymerization technique (SET-LRP). Graphite functionalized with bromide for the first time via an efficient route using mild reagents has been designed to develop a graphene based radical initiator. The efficiency of sacrificial initiator (ethyl α-bromoisobutyrate) has also been compared with a graphene based initiator towards monitoring their Cu(0) mediated controlled molecular weight and morphological structures through mass spectroscopy (MOLDI-TOF) and field emission scanning electron microscopy (FE-SEM) analysis, respectively. The enhancement in thermal stability is observed for graphene-grafted-poly(methyl methacrylate) (G-g-PMMA) at 392 °C, which may be due to the influence ofthe covalent addition of graphene, whereas the sacrificial initiator used to synthesize G-graft-PMMA (S) has low thermal stability as analyzed by TGA. A significant difference is noticed on their glass transition and melting temperatures by DSC. The controlled formation and structural features of the polymer-functionalized-graphene is characterized by Raman, FT-IR, UV-Vis spectroscopy, NMR, and zeta potential measurements. The wettability measurements of the novel G-graft-PMMA on leather surface were found to be better in hydrophobic nature with a water contact angle of 109 ± 1°.


1997 ◽  
Vol 30 (26) ◽  
pp. 8161-8164 ◽  
Author(s):  
Krzysztof Matyjaszewski ◽  
Mingli Wei ◽  
Jianhui Xia ◽  
Nancy E. McDermott

2000 ◽  
Vol 33 (11) ◽  
pp. 4048-4052 ◽  
Author(s):  
Neldes J. Hovestad ◽  
Gerard van Koten ◽  
Stefan A. F. Bon ◽  
David M. Haddleton

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