Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based Hydrogel
Sodium carbonate is an abundant, low-cost, and low-hazard raw material widely used as a food additive and CO<sub>2</sub> absorbent in the food industry. However, its application in food packaging is limited because it is used in solid form, either in sachets or as a compounding ingredien...
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MDPI AG
2025-01-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/11/1/78 |
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| author | Jae Young Kim Youn Suk Lee |
| author_facet | Jae Young Kim Youn Suk Lee |
| author_sort | Jae Young Kim |
| collection | DOAJ |
| description | Sodium carbonate is an abundant, low-cost, and low-hazard raw material widely used as a food additive and CO<sub>2</sub> absorbent in the food industry. However, its application in food packaging is limited because it is used in solid form, either in sachets or as a compounding ingredient in plastics. Solid sodium carbonate requires an external moisture supply for CO<sub>2</sub> absorption, with its performance dependent on moisture availability. This limitation hinders its commercialization in food packaging applications. We developed a sodium carbonate-based, self-reactive CO<sub>2</sub> absorbent hydrogel incorporating polyacrylic acid sodium salt (PAAS). This sodium carbonate hydrogel (SCH-PAAS) exhibits self-reactivity, eliminating the need for external moisture, and demonstrates a high CO<sub>2</sub> absorption capacity. PAAS incorporation facilitates the formation of a porous structure during gel solidification through reactions with CO<sub>2</sub>. Increased PAAS content accelerates CO<sub>2</sub> absorption rates, particularly under low-temperature conditions (10 °C and 25 °C). Notably, absorption was faster at 10 °C than at 25 °C. The proposed SCH-PAAS exhibits a significantly enhanced absorption performance at low temperatures compared to conventional sodium carbonate-based materials, which exhibit reduced efficiency under such conditions. The increased gas–liquid contact area in SCH-PAAS makes it highly suitable for fresh food packaging applications, particularly under low temperatures. |
| format | Article |
| id | doaj-art-6a449bcb8ff1497983b863c6e2b7972e |
| institution | Kabale University |
| issn | 2310-2861 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Gels |
| spelling | doaj-art-6a449bcb8ff1497983b863c6e2b7972e2025-01-24T13:34:03ZengMDPI AGGels2310-28612025-01-011117810.3390/gels11010078Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based HydrogelJae Young Kim0Youn Suk Lee1Department of Packaging, Yonsei University, Wonju 26493, Republic of KoreaDepartment of Packaging, Yonsei University, Wonju 26493, Republic of KoreaSodium carbonate is an abundant, low-cost, and low-hazard raw material widely used as a food additive and CO<sub>2</sub> absorbent in the food industry. However, its application in food packaging is limited because it is used in solid form, either in sachets or as a compounding ingredient in plastics. Solid sodium carbonate requires an external moisture supply for CO<sub>2</sub> absorption, with its performance dependent on moisture availability. This limitation hinders its commercialization in food packaging applications. We developed a sodium carbonate-based, self-reactive CO<sub>2</sub> absorbent hydrogel incorporating polyacrylic acid sodium salt (PAAS). This sodium carbonate hydrogel (SCH-PAAS) exhibits self-reactivity, eliminating the need for external moisture, and demonstrates a high CO<sub>2</sub> absorption capacity. PAAS incorporation facilitates the formation of a porous structure during gel solidification through reactions with CO<sub>2</sub>. Increased PAAS content accelerates CO<sub>2</sub> absorption rates, particularly under low-temperature conditions (10 °C and 25 °C). Notably, absorption was faster at 10 °C than at 25 °C. The proposed SCH-PAAS exhibits a significantly enhanced absorption performance at low temperatures compared to conventional sodium carbonate-based materials, which exhibit reduced efficiency under such conditions. The increased gas–liquid contact area in SCH-PAAS makes it highly suitable for fresh food packaging applications, particularly under low temperatures.https://www.mdpi.com/2310-2861/11/1/78sodium carbonate-based hydrogelself-reactive CO<sub>2</sub> absorbentfaster CO<sub>2</sub> capture at low temperature |
| spellingShingle | Jae Young Kim Youn Suk Lee Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based Hydrogel Gels sodium carbonate-based hydrogel self-reactive CO<sub>2</sub> absorbent faster CO<sub>2</sub> capture at low temperature |
| title | Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based Hydrogel |
| title_full | Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based Hydrogel |
| title_fullStr | Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based Hydrogel |
| title_full_unstemmed | Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based Hydrogel |
| title_short | Self-Reactive Carbon Dioxide Absorbent with Sodium Carbonate-Based Hydrogel |
| title_sort | self reactive carbon dioxide absorbent with sodium carbonate based hydrogel |
| topic | sodium carbonate-based hydrogel self-reactive CO<sub>2</sub> absorbent faster CO<sub>2</sub> capture at low temperature |
| url | https://www.mdpi.com/2310-2861/11/1/78 |
| work_keys_str_mv | AT jaeyoungkim selfreactivecarbondioxideabsorbentwithsodiumcarbonatebasedhydrogel AT younsuklee selfreactivecarbondioxideabsorbentwithsodiumcarbonatebasedhydrogel |