Heat capacities of alpha-, beta-, and gamma- polymorphs of glycine
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F24%3A00602402" target="_blank" >RIV/61389013:_____/24:00602402 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/1420-3049/29/22/5366" target="_blank" >https://www.mdpi.com/1420-3049/29/22/5366</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/molecules29225366" target="_blank" >10.3390/molecules29225366</a>
Alternative languages
Result language
angličtina
Original language name
Heat capacities of alpha-, beta-, and gamma- polymorphs of glycine
Original language description
As a part of our effort to establish reliable thermodynamic data for amino acids, the heat capacity and phase behavior are reported for two stable polymorphs (α and γ) of glycine (aminoacetic acid, CAS RN: 56-40-6). Prior to heat capacity measurement, thermogravimetric analysis and X-ray powder diffraction were performed to determine decomposition temperatures and initial crystal structures, respectively. The literature heat capacities obtained by adiabatic calorimetry are available in the temperature interval (7–304). The literature data were used for validating performance of our relaxation (heat-pulse) calorimeter, which was used for measurement of the heat capacity of α-glycine in the temperature interval (2–267) K. The crystal heat capacities of the α- and γ-glycine were extended towards higher temperatures using Tian–Calvet calorimetry in the temperature interval (262–358) and power compensation DSC in the temperature interval (310–449) K. As a result, reference heat capacities and thermodynamic functions for the crystalline phase from 0 K up to 450/435 K for α/γ-glycine were developed. The literature heat capacities for β-glycine over the range 0 K to 295 K were treated in the same manner in order to provide thermodynamic data for all three polymorphs existing at the atmospheric pressure.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecules
ISSN
1420-3049
e-ISSN
1420-3049
Volume of the periodical
29
Issue of the periodical within the volume
22
Country of publishing house
CH - SWITZERLAND
Number of pages
14
Pages from-to
5366
UT code for WoS article
001365279200001
EID of the result in the Scopus database
2-s2.0-85210179706