Preparation of a starch-based superabsorbent polymer by γ-ray irradiation and investigation of its properties

GAO Yang; FENG Xinxin; LI Linfan; XING Zhe; LI Rong; WU Guozhong

doi:10.11889/j.1000-3436.2022-0112

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Preparation of a starch-based superabsorbent polymer by γ-ray irradiation and investigation of its properties

RADIATION CHEMISTRY | 更新时间：2023-09-15

- Preparation of a starch-based superabsorbent polymer by γ-ray irradiation and investigation of its properties
- Journal of Radiation Research and Radiation Processing Vol. 41, Issue 1, Pages: 42-49(2023)
- 作者机构：
  
  1.中国科学院上海应用物理研究所上海 201800
  2.中国科学院大学北京 100049
  3.上海科技大学物质科学与技术学院上海 200031
- 作者简介：
  
  GAO Yang (male) was born in February 1998, and obtained his bachelor’s degree from East China University of Science and Technology in 2019. Now he is a graduate student at Shanghai Institute of Applied Physics, Chinese Academy of Sciences, majoring in inorganic chemistry
  LI Rong, associated professor, E-mail: lirong@sinap.ac.cn
  WU Guozhong, professor, E-mail: wuguozhong@sinap.ac.cn
- 基金信息：
  
  Major Scientific and Technological Project of Shanghai Institute of Applied Physics, Chinese Academy of Science "Research on Some Frontier Applications of Radiation Technology in the Field of Ecological Environment and Health"
- DOI：10.11889/j.1000-3436.2022-0112
  CLC：
扫描看全文
GAO Yang, FENG Xinxin, LI Linfan, et al. Preparation of a starch-based superabsorbent polymer by γ-ray irradiation and investigation of its properties. [J]. Journal of Radiation Research and Radiation Processing 41(1):42-49(2023)
DOI：

GAO Yang, FENG Xinxin, LI Linfan, et al. Preparation of a starch-based superabsorbent polymer by γ-ray irradiation and investigation of its properties. [J]. Journal of Radiation Research and Radiation Processing 41(1):42-49(2023) DOI： 10.11889/j.1000-3436.2022-0112.

摘要

本文以淀粉与丙烯酸单体为主要原料，采用钴-60 γ射线共辐射法制得淀粉基超级吸水材料（Super absorbent polymer， SAP）。通过傅里叶变换红外光谱对SAP进行化学结构表征。扫描电镜图显示，SAP颗粒表面含有大量中孔结构。热重分析测试结果表明，SAP较原始淀粉样品的热稳定性有明显提升。吸收剂量、丙烯酸与淀粉的投料比显著影响SAP的吸水性能。通过筛选反应条件，SAP的吸水（去离子水）倍率可达到532 g/g（吸收剂量：20 kGy；交联剂：80 mg/L；淀粉与丙烯酸投料比：1/2）。将SAP负载硝酸钾和磷酸钠，结果表明，SAP能够高效释放负载的离子，磷酸根离子释放率为80%，钾离子为82%。

Abstract

A super absorbent polymer (SAP) was prepared using starch and acrylic acid under exposure to ,60,Co γ-rays irradiation. The chemical structure of the SAP was characterized by Fourier-transform infrared spectroscopy Scanning electron micrographs showed that the surface of the SAP contained numerous mesoporous structures. Thermogravimetric analysis indicated improved thermal stability of the SAP compared to that of the original starch. The absorbed dose and feed ratio of the acrylic acid and starch significantly affected the water absorption performance of the SAP. The water absorption capacity of the SAP was 532 g/g at the optimal conditions (absorbed dose: 20 kGy, crosslinking agent: 80 mg/L, feed ratio of starch to acrylic acid: 1/2). The SAP efficiently released the loaded KNO,3, or Na,3,PO,4,; the release rates were 82% for K,+, and 80% for PO,4,3-,.

关键词

超级吸水材料辐射接枝淀粉丙烯酸

Keywords

Super absorbent polymerRadiation graftingStarchAcrylic acid

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