CaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water Uptake
Super absorbent polymer (SAP) sorbs copious amount of liquid water but its sorption power for water vapor is quite low. On the other hand, mesoporous silica loaded with CaCl2 (MPS-CC) has high sorption capacity for water vapor. However, this is determined by the salt loading, which is limited due to...
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Hosokawa Powder Technology Foundation
2014-09-01
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doaj-f69da5c90aa44cc28408fc97ded1cf142021-02-03T00:50:30ZengHosokawa Powder Technology FoundationKONA Powder and Particle Journal0288-45342187-55372014-09-0132020721610.14356/kona.2015011konaCaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water UptakeKi Woong Ahn0Soo Yeon Jang1Min Hyuk Hwang2Sun-Geon Kim3School of Chemical Engineering and Materials Science, Chung-Ang University, KoreaSchool of Chemical Engineering and Materials Science, Chung-Ang University, KoreaSchool of Chemical Engineering and Materials Science, Chung-Ang University, KoreaSchool of Chemical Engineering and Materials Science, Chung-Ang University, KoreaSuper absorbent polymer (SAP) sorbs copious amount of liquid water but its sorption power for water vapor is quite low. On the other hand, mesoporous silica loaded with CaCl2 (MPS-CC) has high sorption capacity for water vapor. However, this is determined by the salt loading, which is limited due to its corrosiveness. Even by simple powder blending of 75 mass% of SAP and the balance of MPS-CC (SAP75/MPS-CC25), the 3-hour maximum specific water uptake (g H2O/g sorbent) reached the maximum, 3 times the equilibrium uptake of MPS-CC. The sorption property was further enhanced by developing a new sorbent in which mesoporous silica was grown on the surface of swelling SAP and then impregnated by CC in ethanol. In the new sorbent (SAP-iMPS-CC), MPS grew organized, straight and lengthwise by the help of SAP. Owing to such intimate contact between MPS and SAP, the 3-hour specific water uptake of the new sorbents grown for more than 24 h (SAP-iMPS-CC24) was kept constant at the value of 2 times that of SAP75/MPS25. The SAP mass% of SAP-iMPS-144 could reach 25 without the sacrifice of sorption capacity.https://www.jstage.jst.go.jp/article/kona/32/0/32_2015011/_html/-char/enmesoporous silicasuperabsorbent polymertemplate growthcalcium chloridewater uptake |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ki Woong Ahn Soo Yeon Jang Min Hyuk Hwang Sun-Geon Kim |
spellingShingle |
Ki Woong Ahn Soo Yeon Jang Min Hyuk Hwang Sun-Geon Kim CaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water Uptake KONA Powder and Particle Journal mesoporous silica superabsorbent polymer template growth calcium chloride water uptake |
author_facet |
Ki Woong Ahn Soo Yeon Jang Min Hyuk Hwang Sun-Geon Kim |
author_sort |
Ki Woong Ahn |
title |
CaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water Uptake |
title_short |
CaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water Uptake |
title_full |
CaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water Uptake |
title_fullStr |
CaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water Uptake |
title_full_unstemmed |
CaCl2-in-Mesoporous Silica Grown on Superabsorbent Polymer to Enhance Water Uptake |
title_sort |
cacl2-in-mesoporous silica grown on superabsorbent polymer to enhance water uptake |
publisher |
Hosokawa Powder Technology Foundation |
series |
KONA Powder and Particle Journal |
issn |
0288-4534 2187-5537 |
publishDate |
2014-09-01 |
description |
Super absorbent polymer (SAP) sorbs copious amount of liquid water but its sorption power for water vapor is quite low. On the other hand, mesoporous silica loaded with CaCl2 (MPS-CC) has high sorption capacity for water vapor. However, this is determined by the salt loading, which is limited due to its corrosiveness. Even by simple powder blending of 75 mass% of SAP and the balance of MPS-CC (SAP75/MPS-CC25), the 3-hour maximum specific water uptake (g H2O/g sorbent) reached the maximum, 3 times the equilibrium uptake of MPS-CC. The sorption property was further enhanced by developing a new sorbent in which mesoporous silica was grown on the surface of swelling SAP and then impregnated by CC in ethanol. In the new sorbent (SAP-iMPS-CC), MPS grew organized, straight and lengthwise by the help of SAP. Owing to such intimate contact between MPS and SAP, the 3-hour specific water uptake of the new sorbents grown for more than 24 h (SAP-iMPS-CC24) was kept constant at the value of 2 times that of SAP75/MPS25. The SAP mass% of SAP-iMPS-144 could reach 25 without the sacrifice of sorption capacity. |
topic |
mesoporous silica superabsorbent polymer template growth calcium chloride water uptake |
url |
https://www.jstage.jst.go.jp/article/kona/32/0/32_2015011/_html/-char/en |
work_keys_str_mv |
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