Effects of Polymerization Parameters on Aqueous Deposited Copolymerization of Acrylonitrile and Itaconic Acid

Abstract:

Pure powdery high molecular weight polyacrylonitrile (HMW-PAN) copolymers were firstly synthesized by aqueous deposited polymerization (ADP) technique employing 2,2'-Azobis (isobutyramidine) dihydrochloride (AIBA) as initiator and itaconic acid (IA) as comonomer. Various PAN polymers were obtained through changing different polymerization parameters. It is indicated that with the increase of total monomer concentration, initiator concentration, reaction temperature and reaction time, polymerization conversions of PAN copolymers all increased. While the molecular weights become greater with the increase of total monomer concentration. With the increase of initiator concentration and reaction temperature (under higher reaction temperature region), the molecular weights decreased. However, the molecular weights only had very little decrease at the end of long extension of reaction time.

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 508-511
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.508
• Online since: September 2013
• Authors: Ya Qi Zhao, Qiao Feng, Ling Zhi Du
• Keywords: Acrylonitrile, AIBA, Aqueous Deposited Polymerization, Itaconic Acid

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