Preparation and Properties of Starch-based Superabsorbent Polymers Modified by Crayfish Shell

LIU Ting-guo; YANG Ming-yang; REN Jing-yu; ZHANG Chi; YIN Hai-ming

doi:10.14028/j.cnki.1003-3726.2025.24.368

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Preparation and Properties of Starch-based Superabsorbent Polymers Modified by Crayfish Shell

更新时间：2025-04-29

- Preparation and Properties of Starch-based Superabsorbent Polymers Modified by Crayfish Shell
- Polymer Bulletin Vol. 38, Issue 5, Pages: 808-816(2025)
- 作者机构：
  
  池州学院材料与环境工程学院，池州 247000
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.24.368
  CLC：
- Received：03 December 2024，
  
  Accepted：2025-01-25，
  
  Published Online：03 March 2025，
  
  Published：20 May 2025
- 稿件说明：
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刘廷国, 杨明阳, 任静宇, 张驰, 尹海明. 虾壳粉改性淀粉基高吸水性树脂的制备与性能. 高分子通报, 2025, 38(5), 808–816.

Liu, T. G.; Yang, M. Y.; Ren, J. Y.; Zhang, C.; Yin, H. M. Preparation and properties of starch-based superabsorbent polymers modified by crayfish shell. Polym. Bull. (in Chinese), 2025, 38(5), 808–816.
刘廷国, 杨明阳, 任静宇, 张驰, 尹海明. 虾壳粉改性淀粉基高吸水性树脂的制备与性能. 高分子通报, 2025, 38(5), 808–816. DOI： 10.14028/j.cnki.1003-3726.2025.24.368.

Liu, T. G.; Yang, M. Y.; Ren, J. Y.; Zhang, C.; Yin, H. M. Preparation and properties of starch-based superabsorbent polymers modified by crayfish shell. Polym. Bull. (in Chinese), 2025, 38(5), 808–816. DOI： 10.14028/j.cnki.1003-3726.2025.24.368.

摘要

以橡子淀粉为原料，虾壳粉为改性剂，采用水溶液聚合法制备了虾壳粉改性淀粉基高吸水树脂。通过单因素实验法，系统地考察了反应条件以及虾壳粉预处理方式对树脂得率和吸水性能的影响。结果表明，交联剂和引发剂的用量对凝胶的形成，以及产物得率具有显著影响；同时，实验所设定的反应条件也会对树脂的吸水性能产生显著影响。虾壳粉的添加能够提高树脂吸水后凝胶的强度，且不会大幅度降低树脂的吸水性能，即使虾壳粉的添加量达到反应物总质量的9.57%，产物吸水倍率仍能达到2097 g⋅g

-1

。采用扫描电子显微镜(SEM)、能量色散X射线光谱(EDS)、X射线衍射(XRD)、傅里叶红外光谱(FTIR)、热重分析法(TGA)和X射线光电子能谱(XPS)等表征手段，对合成的树脂样品进行了详细的形貌和结构表征。结果证实，添加经预加热处理的虾壳粉能够赋予树脂丰富的多孔结构，成

功引入均匀分布的钙和氮元素，且有更多的丙烯酸分子接枝到生物大分子骨架上，与钙的作用力更强，产物具有更好的热稳定性。

Abstract

A series of modified starch-based superabsorbent polymers (SAP) were prepared by aqueous solution polymerization using acorn starch as the raw material and crayfish shell powder as a modifier. The effects of the reaction conditions and the pretreatment method of the crayfish shell on the resin yield and water absorbency were studied in detail using the single factor method. The amount of crosslinker and initiator had a significant impact on the formation of the hydrogel and product yield. All reaction conditions in the experiment had a significant impact on the water absorbency of the resin. The addition of crayfish shells can improve the gel strength of the resin after water absorption

but does not significantly reduce the water absorption performance. Even though the additive amount of crayfish shell reaches 9.57% of the total mass of reactants

the water absorbency can still reach 2097 g·g

−1

. The morphology and structure of the synthesized resin samples were characterized by scanning electron microscopy (SEM)

energy dispersive X-ray spectroscopy (EDS)

X-ray diffraction (XRD)

Fourier transform infrared spectroscopy (FTIR)

thermogravimetric analysis (TGA)

and X-ray photoelectron spectroscopy (XPS). The results confirmed that adding preheated crayfish shell powder could endow the resin with a rich porous structure

successfully introducing uniformly distributed calcium and nitrogen. More acrylic acid molecules are grafted onto the biomacromolecule skeleton and have stronger interaction forces with calcium

resulting in better thermal stability of the product.

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