A Microstructural Study of Acrylic-Modified Chitosan by Means of PALS and SAXS

Abstract:

Chemical modification of chitosan, specially grafting with different polymers is an important strategy in the production of bio-based materials with enhanced properties. In the present study, chitosan was grafted with n-butyl acrylate, in a surfactant-free emulsion polymerization. Stable dispersions with high grafting efficiency were obtained and the microstructure of the casted films was analyzed by positron annihilation lifetime spectroscopy and small angle X-ray scattering. Results are discussed in terms of the number and distribution of the grafting sites.

• Periodical: Defect and Diffusion Forum (Volume 373)
• Pages: 265-268
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.373.265
• Online since: March 2017
• Authors: Pablo Anbinder, Carlos Macchi*, Javier Amalvy, Alberto Somoza
• Keywords: Chitosan, Graft, Microstructure, PALS

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