SYNTHESIS OF HIGHLY PURE POLY (VINYLACETATE) BY ONE- STEP CONTROLLED RADICAL POLYMERIZATION IN THE PRESENCE OF COBALT CATALYST USING CROSS LINKED SUSPENDED POLYVINYL ACETATE PARTICLES

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SEMSARZADEH MOHAMMAD ALI; SABZEVARI ALIREZA; RAZAVI SEYEDEH MAHBOUBEH

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Journal: Journal of Applied Research in Chemistry Year:2018 | Volume:12 | Issue:2 Page(s): 119-130

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Title

SYNTHESIS OF HIGHLY PURE POLY (VINYLACETATE) BY ONE- STEP CONTROLLED RADICAL POLYMERIZATION IN THE PRESENCE OF COBALT CATALYST USING CROSS LINKED SUSPENDED POLYVINYL ACETATE PARTICLES

Author(s)

SEMSARZADEH MOHAMMAD ALI | SABZEVARI ALIREZA | RAZAVI SEYEDEH MAHBOUBEH | Issue Writer Certificate

Keywords

COBALT-MEDIATED RADICAL POLYMERIZATIONQ1

POLY (VINYL ACETATE)Q1

CATALYST ADSORPTION–DESORPTIONQ1

ALUMINA COLUMNQ1

CROSS LINKED SUSPENDED POLYVINYL ACETATEQ1

Abstract

One of the main drawbacks in organometallic-mediated radical polymerization techniques is ahigh amount of catalyst residual in the polymer product, which results in deep colors in polymer mixture. Inthis research, CROSS LINKED SUSPENDED POLYVINYL ACETATE (SPVAc) was used as catalyst adsorbing agent andits release in COBALT-MEDIATED RADICAL POLYMERIZATION of vinyl acetate. For this purpose, firstly, the adsorptionprocess of cobalt acetylacetonate on these particles and also the thermodynamics of this process werestudied. SPVAc particles have the capability of the catalyst adsorption at low temperatures and adsorbedcatalyst particles are gradually released by increasing temperature to polymerization reaction temperature. The kinetic studies for vinyl acetate polymerization in the presence of cobalt acetylacetonate adsorbed onthe SPVAc particle is compared with cobalt acetylacetonate mediated polymerization of vinyl acetate in theabsence of SPVAc particle. The results have proved positive effects of these particles on the rate and kineticof reaction. Then, radical polymerization of vinyl acetate without the need for purification of polymer wascarried out successfully through a single reaction in a column packed with alumina and a layer of adsorbedcobalt acetylacetonate catalyst on the SPVAc particles. In this method, the slow adsorption and desorptionof cobalt complex by suspended polyvinyl acetate, were followed by the radical polymerization and the finalseparation step.

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APA: Copy

SEMSARZADEH, MOHAMMAD ALI, SABZEVARI, ALIREZA, & RAZAVI, SEYEDEH MAHBOUBEH. (2018). SYNTHESIS OF HIGHLY PURE POLY (VINYLACETATE) BY ONE- STEP CONTROLLED RADICAL POLYMERIZATION IN THE PRESENCE OF COBALT CATALYST USING CROSS LINKED SUSPENDED POLYVINYL ACETATE PARTICLES. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), 12(2 ), 119-130. SID. https://sid.ir/paper/180168/en

Vancouver: Copy

SEMSARZADEH MOHAMMAD ALI, SABZEVARI ALIREZA, RAZAVI SEYEDEH MAHBOUBEH. SYNTHESIS OF HIGHLY PURE POLY (VINYLACETATE) BY ONE- STEP CONTROLLED RADICAL POLYMERIZATION IN THE PRESENCE OF COBALT CATALYST USING CROSS LINKED SUSPENDED POLYVINYL ACETATE PARTICLES. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)[Internet]. 2018;12(2 ):119-130. Available from: https://sid.ir/paper/180168/en

IEEE: Copy

MOHAMMAD ALI SEMSARZADEH, ALIREZA SABZEVARI, and SEYEDEH MAHBOUBEH RAZAVI, “SYNTHESIS OF HIGHLY PURE POLY (VINYLACETATE) BY ONE- STEP CONTROLLED RADICAL POLYMERIZATION IN THE PRESENCE OF COBALT CATALYST USING CROSS LINKED SUSPENDED POLYVINYL ACETATE PARTICLES,” JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), vol. 12, no. 2 , pp. 119–130, 2018, [Online]. Available: https://sid.ir/paper/180168/en

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