Citation: Fei-jun Zhang, Xiao-hui Liu. ICAR ATRP OF ACRYLONITRILE UTILIZING A MODERATE TEMPERATURE RADICAL INITIATOR[J]. Chinese Journal of Polymer Science, ;2013, 31(12): 1613-1622. doi: 10.1007/s10118-013-1348-y shu

ICAR ATRP OF ACRYLONITRILE UTILIZING A MODERATE TEMPERATURE RADICAL INITIATOR

Fei-jun Zhang ¹ ,
Xiao-hui Liu ^1,,

1.
School of Materials Science and Engineering, Key Lab of Hollow Fiber Membrane Material and Processes of Ministry of Education, Tianjin Polytechnic University, Tianjin 300387, China

Corresponding author: Xiao-hui Liu,
Received Date: 18 December 2012
Revised Date: 16 January 2013

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 21074127 and 20804044) and the Key Project of Chinese Ministry of Education (No. 212003).

Initiators for continuous activator regeneration atom transfer radical polymerization (ICAR ATRP) of acrylonitrile was first conducted at various ambient temperatures (30-45 ℃). The key to success is ascribed to the usage of an appropriate low temperature radical initiator (2,2'-azobis(2,4-dimethylvaleronitrile)) and a high reactivity catalytic system (CuBr2/Me6TREN). The molar ratio of Cu catalyst to AN as low as 1:20000 was used to prepare well-defined polyacrylonitrile with controlled molecular weight and a narrow polydispersity index range of 1.08-1.30, while the monomer conversion was up to ca. 98%. The apparent activation energy of the polymerization was calculated to be 128.45 kJ/mol, suggesting that the polymerization strongly depended on reaction temperature. The very high chain-end functionality of the resultant polymer was confirmed by 1H-NMR and GPC analyses as well as chain extension reaction.
- Living polymerization,
- ICAR ATRP,
- Acrylonitrile,
- Ambient temperature
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