A comparative study between the combined effects of UV irradiation/sodium benzoate and glutaraldehyde vapor/gelatin on carboxymethyl cellulose (CMC) film with low degrees of substitution was performed. The kinetics of the surface photo-crosslinking and chemical crosslinking treatments were evaluated through determination of the film fraction and swelling rate in the crosslinked CMC networks. It was found that sodium benzoate and gelatin concentrations were dominant factors compared with UV irradiation and glutaraldehyde vapor induced times. The results of surface hydrophobicity, water barrier and mechanical properties were found to be a function of both treatments, among which photo-crosslinking treatment was more effective than the chemical crosslinking process. The pronounced peaks of CMC were disappeared in the fingerprint region after both crosslinking reactions. The cold-crystallization exothermic peak of CMC shifted to the lower temperature after the crosslinking treatments, indicating that more decrease belonged to the photo-crosslinked film. X-ray diffraction pattern of the modified films revealed the emergence of new pronounced peaks, coinciding with an increase in the CMC crystallinity. Many micro-cracks were recognized on the neat CMC surface, while the crosslinking treatments eliminated the cracks. Finally, the conformity of the crosslinked films with the actual food regulations on the biodegradable materials was verified by cytotoxicity test to study the possibility of utilizing in the food packaging sector. Both crosslinked films did not show any evidence of the cytotoxic effects since it could not increase the cytoplasmic lactate dehydrogenase release from L-929 fibroblast cells in contact with the films.
Food Hydrocolloids – Elsevier
Published: Dec 1, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera