Functionalization of Olefinic Polymer and Copolymer Blends in the Melt

Functionalization of Olefinic Polymer and Copolymer Blends in the Melt 

Boleslaw Jurkowski Stepan S. Pesetskii and Yuri M. Krivoguz 

During the past 20 years, there has been much interest in understanding the grafting of polar vinyl monomers to polyolefins (PO). The grafting process can be performed in an inert solvent or in a PO melt. A direct grafting of a monomer to chains in molten PO that follows the free-radical mechanism appears more preferable, and it has been studied more widely. It is most often done by means of reactive extrusion (RE), where an extruder is used as a reactor of continuous action. This technology permits the production of a variety of functionalized PO (1-8). 

The major advantages of PO functionalization by RE method are the possibility of high and controlled yield of the final product, simplicity of its separation, high rate of the reaction, and the continuity of the process (1,5). 

Polyolefin Blends, Edited by Domasius Nwabunma and Thein Kyu Copyright 2008 John Wiley Sons, Inc. 

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Chapter 10 Functionalization of Olefinic Polymer and Copolymer Blends in the Melt 283 According to other authors (40,41)... 

Before analyzing the state of art in the functionalization of blends of both polymers and olefin copolymers, we first consider the most important points of grafting of polar monomers to homopolyolefins in melt by means of RE. 

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