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Article

Grafting of Cellulose Fibers with Poly(ε-caprolactone) and Poly(l-lactic acid) via Ring-Opening Polymerization

Supporting Info

Hanna Lönnberg,^† Qi Zhou,^‡ Harry Brumer III,^‡ Tuula T. Teeri,^‡ Eva Malmström,^† and Anders Hult*^†

Department of Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden, and Department of Biotechnology, Royal Institute of Technology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden

Biomacromolecules, 2006, 7 (7), pp 2178–2185

DOI: 10.1021/bm060178z

Publication Date (Web): June 13, 2006

†

Department of Fibre and Polymer Technology.

‡

Department of Biotechnology.

Corresponding author. E-mail address: andult@polymer.kth.se.

Abstract

In this study, ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) and l-lactide (l-LA) has been performed from cellulose fibers. The hydroxyl groups on cellulose act as initiators in the polymerization, and the polymers are covalently bonded to the cellulose fiber. As an attempt to introduce more available hydroxyl groups on the surface, and thereby obtain higher grafting efficiency in the ROP of ε-CL and l-LA, unmodified paper was modified with xyloglucan-bis(methylol)-2-methylpropanamide (XG-bis-MPA) and 2,2-bis(methylol)propionic acid (bis-MPA), respectively. The grafted substrates were characterized via Fourier transform infrared spectroscopy (FTIR), contact angle measurement, atomic force microscopy, and enzymatic degradation. The results showed a successful grafting of poly(ε-caprolactone) (PCL) and poly(l-lactic acid) (PLLA) from the cellulose fiber surfaces. Furthermore, the results showed an improved grafting efficiency after activation of the cellulose surface with bis-MPA, and showed that the amount of grafted polymer could be controlled by the ratio of added free initiator to monomer.

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Published In Issue July 10, 2006
Received February 27, 2006
Revised Manuscript Received May 4, 2006

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Article

Grafting of Cellulose Fibers with Poly(ε-caprolactone) and Poly(l-lactic acid) via Ring-Opening Polymerization

Abstract

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SciFinder Links

History

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