How I could calculate loading efficiency of essential oil that is loaded in polymeric nanoparticles using TGA?
if your nanoparticles exhibit higher heat stability than the oil (which is usually the case), by measuring TGA you will have a loss (or more losses) belonging to the organic phase and a residual weight which is due to the nanoparticles. the weight ratio gives you the absorption capacity. Problems may arise if the decomposition of the organic phase in the confined spaces results in char formation.
Hi Amr,
These papers seem to be useful:
Essential Oils Loaded in Nanosystems: A Developing Strategy for a ...
https://www.hindawi.com/journals/ecam/2014/651593/
by AR Bilia - 2014 - Cited by 57 - Related articles
Feb 25, 2014 - The essential oil may be conjugated with the polymer (matrix or wall) or in ... Loading capacity was 12% and encapsulation efficiency was 20%. ... The eugenol-loaded chitosan nanoparticles were thermally stable and could ...
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Preparation, characterization, and optimization of primaquine-loaded ...
https://www.ncbi.nlm.nih.gov › NCBI › Literature › PubMed Central (PMC)
by WN Omwoyo - 2014
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Lippia sidoides essential oil encapsulation by angico gum/chitosan ...
www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010001200025
by HCB Paula - 2010
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Two-step method for encapsulation of oregano essential oil in ... - Agris
agris.fao.org/agris-search/search.do?recordID=US201600053055
by SF Hosseini - 2013
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