New insights into the thermal degradation behavior of Hydroxypropyl-beta-cyclodextrin inclusion complexes containing carvacrol essential oil via thermogravimetric analysis was written by Li, Zhe;Jiang, Xiaoxia;Zhu, Lin;Chen, Fucai;Liu, Hongning;Ming, Liangshan. And the article was included in Journal of Thermal Analysis and Calorimetry in 2022.Formula: C10H14O This article mentions the following:
The physicochem. properties and thermodn. parameters of cyclodextrin inclusion complexes (ICs) containing essential oil were investigated by thermogravimetric anal. It is necessary to understand the ICs thermal decomposition behavior and kinetics to control and elucidate the inclusion complexation mechanisms. Carvacrol essential oil was encapsulated with hydroxypropyl-beta-cyclodextrin (HP-尾 CD) using the freeze-drying method. The IC was characterized by SEM, FT-IR, and phase solubility, which confirmed that there were mol. interactions between the carvacrol essential oil and HP-尾 CD. Moreover, thermal experiments were carried out by a thermogravimetric analyzer at different heating rates (10-40 掳C min-1). In addition, three different models, i.e., FOW, KAS, and Starink, were used to calculate the kinetic energy. The FOW was a more proficient model for the calculation of activation energy (Ea). Further, the average values of Ea varied from conversion, and for carvacrol, HP-尾 CD, and carvacrol/HP-尾 CD IC, they were found to be 70.56, 162.15, and 152.57 kJ mol-1 based on the FOW model, resp. In general, carvacrol encapsulated into HP-尾 CD as an IC showed high thermal stability. The kinetic results could be useful in predicting the thermal performance of IC and in helping optimize exptl. procedures for the encapsulation of essential oils in cyclodextrins. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2Formula: C10H14O).
5-Isopropyl-2-methylphenol (cas: 499-75-2) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Formula: C10H14O
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts