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Investigation of transmission oxygen rate of hybrid materials using optical method

Key words:
cellulose acetate butyrate, cellulose acetate
propionate, sol-gel, hybrids, oxygen transmission
rate, fluorescence quenching.

Novel hybrid materials based on cellulose acetate butyrate (CAB) and cellulose acetate
propionate (CAP) were synthesized via sol-gel processing using tetraethoxysilane as the
precursor. Samples were prepared as flexible films using solvent casting method. Oxygen
permeability of the obtained hybrids was examined using OxyPerm ® system based on a novel
method for oxygen headspace analysis of packages using fluorescent quenching optical
method. Results showed that all obtained organic-inorganic hybrid materials exhibited better
barrier properties to oxygen than unmodified CAB and CAP. The higher the inorganic phase
content, the lower oxygen permeability of prepared materials. The best barrier properties
showed hybrids based on chemically modified polymers: CAB and CAP due to its structure
which created a tortuous diffusion path for oxygen penetration.

dr inż. Patrycja WOJCIECHOWSKA
dr inż. Wojciech KOZAK
Poznan University of Economics and Business
Faculty of Commodity Science
Department of Industrial Products Quality and Ecology
Aleja Niepodleglosci 10, 61-875 Poznan, Poland
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

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