Verification of Controlled Grafting of Styrene from Cellulose via Radiation-Induced RAFT Polymerization | Zendy

Murat Barsbay | Zendy; Olgun Güven | Zendy; Martina H. Stenzel | Zendy; Thomas P. Davis | Zendy; Christopher BarnerKowollik | Zendy; Leonie Barner | Zendy

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Verification of Controlled Grafting of Styrene from Cellulose via Radiation-Induced RAFT Polymerization

Author(s) -

Murat Barsbay,

Olgun Güven,

Martina H. Stenzel,

Thomas P. Davis,

Christopher BarnerKowollik,

Leonie Barner

Publication year - 2007

Publication title -

macromolecules

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.994

H-Index - 313

eISSN - 1520-5835

pISSN - 0024-9297

DOI - 10.1021/ma070825u

Subject(s) - chain transfer , polymer chemistry , polystyrene , dispersity , reversible addition−fragmentation chain transfer polymerization , raft , polymerization , styrene , cellulose , grafting , gel permeation chromatography , chemistry , molar mass distribution , copolymer , thermogravimetric analysis , materials science , radical polymerization , organic chemistry , polymer

Reversible addition - fragmentation chain transfer (RAFT) polymerization was applied to radiation-induced graft polymerization of styrene from cellulose. The grafting of styrene from cellulose substrates using the chain transfer agent cumyl phenyldithioacetate was confirmed by Raman and X-ray photoelectron spectroscopy, differential scanning calorimetery, thermogravimetric analysis, scanning electron microscopy, and contact angle analysis. Grafted polystyrene chains were cleaved from the cellulose surface by acidic hydrolysis of the cellulose. The number-average molecular weight and polydispersity index of the grafted and the free (nongrafted) polystyrenes obtained under identical conditions were determined by size exclusion chromatography. Grafted and nongrafted polystyrenes have almost the same (near theoretical) molecular weight and narrow polydispersity, thus proving for the first time the control of the grafting process mediated via RAFT without any prior functionalization of the surface

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