Controlled Radical Polymerization of Styrene in the Presence of Different Copper Complexes and Organic Halides

Chemical Research in Chinese Universities ›› 1999, Vol. 15 ›› Issue (4): 358-363.

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Controlled Radical Polymerization of Styrene in the Presence of Different Copper Complexes and Organic Halides

CHENG Guang-lou, HU Chun-pu, YING Sheng-kang

Laboratory of Living Polymerization, East China University of Science and Technology, Shanghai 200237, P. R. China

Received:1998-08-28 Online:1999-12-24 Published:2011-08-17
Supported by:
Supported by the National Natural Science Foundation of China.

Abstract

Abstract: The polymerization behaviors of Styrene (St) in the presence of CuX/L [X=Cl or Br; L= 2,2'bipyridine (bpy), 1,10-phenanthroline (phen) or 4,7-diphenyl-1,10-phenanthroline (DPP) ] and R-X (R=trichloromethyl, benzyl or allyl; X=ClorBr) have been studied and examined. In a CuCl/bpy/RCl/St system, a bimodal GPCpeak at the early stage of polymerization was observed, and a concept of multi active species was proposed to explain this phenomenon. In a CuCl/phen (DPP)/RCl/St system, the M_n of polystyrene (PS) increased linearly with St conversion and ln[M]_o/[M] also increased linearly with time, indicating the'living' nature of this system. Furthermore, the stability of the propagating active species in a CuBr/phen/RBr/St system is higher than that in the CuBr/phen/RBr/St system.

Key words: ATRP, 'Living'/controlled radical polymerization, 1,10-Phenanthroline, 4,7-Diphenyl-1,10-phenanthroline, Cuprous halides, Styrene

CHENG Guang-lou, HU Chun-pu, YING Sheng-kang . Controlled Radical Polymerization of Styrene in the Presence of Different Copper Complexes and Organic Halides[J]. Chemical Research in Chinese Universities, 1999, 15(4): 358-363.

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Controlled Radical Polymerization of Styrene in the Presence of Different Copper Complexes and Organic Halides

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