Preparation and its Absorbencies of High Water-Absorbing Resin CLPAAM in Multiple Component Salt-Mixing Solutions

Jian-jun XIE; Qing-xin YAO; Chu DING; Jun-xia LIU; Yuan LIU

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Preparation and its Absorbencies of High Water-Absorbing Resin CLPAAM in Multiple Component Salt-Mixing Solutions

更新时间：2022-09-18

- Preparation and its Absorbencies of High Water-Absorbing Resin CLPAAM in Multiple Component Salt-Mixing Solutions
- Polymer Bulletin Vol. 26, Issue 11, Pages: 81-87(2013)
- 作者机构：
  
  中南林业科技大学材料科学与工程学院，长沙　410004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013-11，
  
  Received：06 March 2013，
  
  Revised：02 July 2013，
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Jian-jun XIE, Qing-xin YAO, Chu DING, Jun-xia LIU, Yuan LIU. Preparation and its Absorbencies of High Water-Absorbing Resin CLPAAM in Multiple Component Salt-Mixing Solutions. [J]. Polymer Bulletin 26(11):81-87(2013)
DOI：

Jian-jun XIE, Qing-xin YAO, Chu DING, Jun-xia LIU, Yuan LIU. Preparation and its Absorbencies of High Water-Absorbing Resin CLPAAM in Multiple Component Salt-Mixing Solutions. [J]. Polymer Bulletin 26(11):81-87(2013) DOI：

摘要

以壳聚糖、丙烯酰胺、丙烯酸为原料

过硫酸钾为引发剂

N’-亚甲基双丙烯酰胺为交联剂

通过溶液聚合和乙醇-NaOH溶液中皂化后处理制备了壳聚糖接枝丙烯酸/丙烯酰胺高吸水树脂(CPAAM)

并测定了多元混合盐溶液中的吸液性能。结果表明

平衡吸液倍率随盐溶液浓度增加迅速减小;非电解质对吸液倍率影响很小

电解质对吸液倍率影响较大;电解质阳离子的价数对CPAAM树脂的吸液倍率影响非常大

高价阳离子对CPAAM树脂吸液性能的影响要大于单价阳离子的。这与单一盐溶液中高吸水树脂所得结论相一致。CPAAM树脂在NH4

/Ca

混合溶液中的吸液倍率顺序为:NH

HCO

/CaCl

(NH

)

/CaCl

Cl/CaCl

;在NH4

混合溶液中的吸液倍率顺序为:NH

HCO

/KCl

(NH

)

/KCl

Cl/KCl。CPAAM树脂在三元混合盐溶液中的吸液倍率顺序为:KCl/NH

HCO

/CO(NH

)

KCl/(NH

)

/CO(NH

)

。CPAAM树脂在四元混合盐溶液的吸液倍率顺序为:(NH

)

/KCl/MgCl

/CO(NH

)

(NH

)

/KCl/CaCl

/CO(NH

)

。对于CPAAM树脂而言

混合盐溶液的适宜的水温均为25℃左右时

其吸液倍率最大。

Abstract

Chitosan graft acrylic acid and acrylamide superabsorbents(CPAAM) are prepared by solution polymerization and soaked in ethanol-NaOH solution using chitosan

acrylic acid(AA) and acrylamide(AM) as raw materials(monomers)

potassium peroxydisulfate(KPS) as initiator

N’-methylene-bis-acrylamide(NMBA) as crosslinker

and the absorbencies in multiple component salt-mixing solutions are measured. The results have shown that the equilibrium absorbencies of the CPAAM decrease rapidly with increasing the concentration; the effect of the non-electrolyte solutions on the absorbency is little while the effect of the electrolyte solutions on it is large. The cation valence of the electrolyte solutions significantly affects the absorbency of the CPAAM; in the same concentration of solution

the effect of high valence cations is greater than that of the monovalent cations for the absorbency of CPAAM. These are agreeable with the results of the absorbencies in single salt solutions for high water-absorbing resins. The order of the absorbencies in binary NH

/Ca

salt-mixing solutions for CPAAM is NH

HCO

/CaCl

(NH

)

/CaCl

Cl/CaCl

while that in ternary K

/NH4

/urea salt-mixing solutions for CPAAM is KCl/NH

HCO

/CO(NH

)

KCl/(NH

)

/CO(NH

)

and that in quaternary K

/NH4

/urea salt-mixing solutions is (NH

)

/KCl/MgCl

/CO(NH

)

(NH

)

/KCl/CaCl

/CO(NH

)

. The suitable water temperatures for the maximum absorbencies in the salt-mixing solutions for CPAAM are all about 25℃.

关键词

超强吸水剂高吸水树脂壳聚糖丙烯酰胺丙烯酸吸液性能混合盐溶液

Keywords

SuperabsorbentHigh water-absorbing resinChitosanAcrylamideAcrylic acidAbsorbencySalt-mixing solution

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