Grafting of nanofibrillated cellulose by free radical polymerization

Kuisma Littunen, Ulla Hippi, Leena-Sisko Johansson, Monika Österberg, Tekla Tammelin, Janne Laine, Jukka Seppälä

Research output: Contribution to conferenceConference AbstractScientificpeer-review

Abstract

Grafting of polymer chains from nanofibrillated cellulose surface has been performed in aqueous suspension by a redox initiated free radical polymerization. Several acrylic monomers have been used, their polymerization behavior studied and structure of the products verified. The method was found very efficient and selective: graft copolymerization was dominant over homopolymerization, and up to 80% of polymer in the product was gained. Their structures were very different. Poly(butyl acrylate) (PBuA) formed very long chains, which were situated on the nanofibril surface fairly far apart. Poly(glycidyl methacrylate) (PGMA), on the other hand, showed a very dense coating on nanofibrils and the chains were relatively short. Thus the structures of the materials varied from coated cellulose nanofibrils to a continuous polymer matrix where the nanofibrils were embedded.
Original languageEnglish
Publication statusPublished - 27 Mar 2011
MoE publication typeNot Eligible
Event241st American Chemical Society National Meeting & Exposition - Anaheim, United States
Duration: 27 Mar 201131 Mar 2011

Conference

Conference241st American Chemical Society National Meeting & Exposition
Abbreviated title241st ACS National Meeting
CountryUnited States
CityAnaheim
Period27/03/1131/03/11

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