Moisture Sorption Isotherm and Isosteric Heat of Sorption Characteristics of PVP-CMC Hydrogel Film: A Useful Food Packaging Material
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F19%3A63521223" target="_blank" >RIV/70883521:28110/19:63521223 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/70883521:28610/19:63521223
Výsledek na webu
<a href="http://dx.doi.org/10.1007/978-3-319-76573-0_36-1" target="_blank" >http://dx.doi.org/10.1007/978-3-319-76573-0_36-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-3-319-76573-0_36-1" target="_blank" >10.1007/978-3-319-76573-0_36-1</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Moisture Sorption Isotherm and Isosteric Heat of Sorption Characteristics of PVP-CMC Hydrogel Film: A Useful Food Packaging Material
Popis výsledku v původním jazyce
Hydrogels are polymeric materials possessing a three-dimensional network structure and can absorb a large quantity of liquid water. Recently, hydrogel-based polymeric materials are being focused and encouraged as they are breathable and maintain the shelf life of fresh fruit and vegetables. A hydrogel film was prepared using synthetic polymer, polyvinylpyrrolidone (PVP), and biopolymer, carboxymethyl cellulose (CMC) and agar, along with polyethylene glycol and glycerol as plasticizer to create a breathable and biodegradable film termed as “PVP-CMC” hydrogel film. In general, hydrogel film provides poor but composition- and structure-dependent moisture resistance in normal atmosphere. Further, interaction among the plasticized ingredients, which are dependent on its ultimate moisture content, controls the physical and mechanical properties of the film. Therefore, it is important to know moisture sorption characteristics of each hydrogel film. The “PVP-CMC” hydrogel film exhibited a tendency to adsorb/desorb moisture depending on environmental relative humidity and temperature during storage. Hence, the general features and the equilibrium relationship between moisture contents of “PVP-CMC” hydrogel film at different temperatures (25, 35, 45 and 55 °C) and relative humidities (≈ 10–90%) of the environment in which the film generally resides, i.e., moisture sorption isotherm (MSI), will be discussed in this chapter. The isosteric heat of sorption at different moisture contents of “PVP-CMC” hydrogel film will also be discussed.
Název v anglickém jazyce
Moisture Sorption Isotherm and Isosteric Heat of Sorption Characteristics of PVP-CMC Hydrogel Film: A Useful Food Packaging Material
Popis výsledku anglicky
Hydrogels are polymeric materials possessing a three-dimensional network structure and can absorb a large quantity of liquid water. Recently, hydrogel-based polymeric materials are being focused and encouraged as they are breathable and maintain the shelf life of fresh fruit and vegetables. A hydrogel film was prepared using synthetic polymer, polyvinylpyrrolidone (PVP), and biopolymer, carboxymethyl cellulose (CMC) and agar, along with polyethylene glycol and glycerol as plasticizer to create a breathable and biodegradable film termed as “PVP-CMC” hydrogel film. In general, hydrogel film provides poor but composition- and structure-dependent moisture resistance in normal atmosphere. Further, interaction among the plasticized ingredients, which are dependent on its ultimate moisture content, controls the physical and mechanical properties of the film. Therefore, it is important to know moisture sorption characteristics of each hydrogel film. The “PVP-CMC” hydrogel film exhibited a tendency to adsorb/desorb moisture depending on environmental relative humidity and temperature during storage. Hence, the general features and the equilibrium relationship between moisture contents of “PVP-CMC” hydrogel film at different temperatures (25, 35, 45 and 55 °C) and relative humidities (≈ 10–90%) of the environment in which the film generally resides, i.e., moisture sorption isotherm (MSI), will be discussed in this chapter. The isosteric heat of sorption at different moisture contents of “PVP-CMC” hydrogel film will also be discussed.
Klasifikace
Druh
C - Kapitola v odborné knize
CEP obor
—
OECD FORD obor
20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název knihy nebo sborníku
Cellulose-Based Superabsorbent Hydrogels
ISBN
978-3-319-76573-0
Počet stran výsledku
18
Strana od-do
1-17
Počet stran knihy
1859
Název nakladatele
Springer Nature
Místo vydání
neuveden
Kód UT WoS kapitoly
—