Effects of CMC-Starch Mixing Ratio and Ethanol Exchange on Structure and Absorption Capacity of Superabsorbent Polymer

Younglae Kim; Byoung-Uk Cho

doi:10.7584/JKTAPPI.2023.12.55.6.70

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2023 Vol.55, Issue 6 Preview Page Next Page

Research Article

Effects of CMC-Starch Mixing Ratio and Ethanol Exchange on Structure and Absorption Capacity of Superabsorbent Polymer CMC-전분 배합비와 에탄올 치환이 고흡수성 소재의 구조와 흡수성에 미치는 영향

30 December 2023. pp. 70-77

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Abstract

Superabsorbent polymers (SAPs) are synthetic polymers known for their high water absorption capabilities, making them integral in products such as diapers, sanitary pads, and agricultural fertilizers. However, traditional chemical SAPs pose environmental and health challenges due to their slow degradation. This study explores the development of environmentally friendly SAPs using biomass materials such as carboxymethyl cellulose (CMC) and oxidized starch. We investigated the effects of different CMC-starch mixing ratios and the ethanol exchange process on the structure and water absorption capacity of SAPs. Our findings reveal that the ethanol exchange process, conducted prior to oven-drying, enhances the initial and maximum water absorption capacities and the drying efficiency, attributed to the formation of porous structure. SAPs processed with ethanol exchange exhibited a maximum water absorption capacity of 320 g/g in distilled water and 72 g/g in saline water. Moreover, varying the CMC-starch ratio affected the three-dimensional of SAPs network structure, subsequently influencing their water absorption behavior and drying efficiency.

Keywords

Superabsorbent polymer (SAP)

carboxymethyl cellulose

oxidized starch

ethanol exchange

water absorption capacity

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 55
No :6
Pages :70-77
Received Date : 2023-11-20
Revised Date : 2023-12-08
Accepted Date : 2023-12-11
DOI :https://doi.org/10.7584/JKTAPPI.2023.12.55.6.70

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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