干旱区生态环境知识资源中心(Arid): 辐射接枝交联制备海藻酸钠系高吸水树脂

Arid

	辐射接枝交联制备海藻酸钠系高吸水树脂
其他题名	Preparation of sodium alginate-based super absorbent polymer by radiation grafting and crosslinking
	叶枫; 谷雨; 韩斐; 徐晓; 黄晨; 马琳; 丁仁浩; 马红娟; 李景烨
来源期刊	核技术
ISSN	0253-3219
出版年	2020
卷号	43 期号:12
中文摘要	高吸水树脂是一种新型高分子材料,可以遇水溶胀,吸收多于自身体积百倍以上的水分形成水凝胶,可用于医用材料、堵漏材料、保水治沙等方面。以海藻酸钠(S odium Alginate,SA)为原料,丙烯酸(Acrylic Acid, AA)为单体,N,N-亚甲基双丙烯酰胺(N,N-methylene Bisacrylamide,MBA)为交联剂,通过共辐射接枝的方法制备具有三维空间网络结构的海藻酸钠系高吸水树脂SA-g-AA。利用红外光谱、热重分析、扫描电镜对制得的水凝胶化学结构及表面形貌进行了表征。研究结果表明:当温度为65 ℃,吸收剂量为5 kGy,AA与SA质量比为5:1,交联剂MBA用量为1.25 wt%,AA中和度为75%的反应条件下,制得的海藻酸钠系高吸水性树脂的吸水率达到579.8 g·g~(-1)。材料重复吸水7次后,其吸水效果能保持初始吸水率的92.5%。材料达到饱和吸水状态后保水时间最长达到15 d。该高吸水材料制备工艺简单,在保水治沙等领域有着潜在的应用前景。
英文摘要	[Background] Super absorbent polymer (SAP) is a new type of polymer material. SAP is rich in hydrophilic groups, hence can absorb at least one hundred times of its own volume and swell while keeping the water from losing for a certain period of time. [Purpose] This study aims to synthesize a new SAP for soil and forestry water conservation. [Methods] In this paper, sodium alginate (SA) was used as the raw material, acrylic acid (AA) was used as the monomer, and N,N-methylene bisacrylamide (MBA) was used as the crosslinking agent. SA-g-AA SAP with three-dimensional network structure was prepared by co-radiation grafting. The chemical structures and surface morphologies of the SA-g-AA SAP were characterized by fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis and scanning electron microscope (SEM). [Results] The results showed that when the temperature was 65 ℃, the absorbed dose was 5 kGy, the mass ratio of AA to SA was 5: 1, the amount of the crosslinking agent MBA was 1.25 wt%, and the AA neutralization degree was 75%, the maximum water absorption ratio of the SA-g-AA SAP reached 579.8 g·g~(-1). After the water absorption reused for 7 times, its water absorption ratio maintained 92.5% of the initial value. It showed that the SA-g-AA SAP had good reusability of water absorption performance; after reaching the saturated water absorption ratio, water-retaining property could be retained for up to 15 days, which showed it had good water retention performance. [Conclusions] This SAP material shows potential application in water retention and desertification control.
中文关键词	高吸水树脂 ; 辐射接枝聚合 ; 海藻酸钠 ; 丙烯酸 ; 保水治沙
英文关键词	Super absorbent polymer Radiation introduced graft polymerization Sodium alginate Acrylic acid Water retention and desertification control
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Nuclear Science & Technology
CSCD记录号	CSCD:6867371
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353607
作者单位	叶枫, 中国科学院上海应用物理研究所;;中国科学院大学, ;;, ;;, 上海;;北京 201800;;100049, 中国. 谷雨, 中国科学院上海应用物理研究所, 上海 201800, 中国. 韩斐, 中国科学院上海应用物理研究所, 上海 201800, 中国. 徐晓, 中国科学院上海应用物理研究所, 上海 201800, 中国. 黄晨, 中国科学院上海应用物理研究所, 上海 201800, 中国. 马琳, 中国科学院上海应用物理研究所, 上海 201800, 中国. 丁仁浩, 中国科学院上海应用物理研究所, 上海 201800, 中国. 马红娟, 中国科学院上海应用物理研究所, 上海 201800, 中国. 李景烨, 中国科学院上海应用物理研究所;;上海师范大学, ;;, ;;, 上海;;上海 201800;;200234, 中国.
推荐引用方式 GB/T 7714	叶枫,谷雨,韩斐,等. 辐射接枝交联制备海藻酸钠系高吸水树脂[J],2020,43(12).
APA	叶枫.,谷雨.,韩斐.,徐晓.,黄晨.,...&李景烨.(2020).辐射接枝交联制备海藻酸钠系高吸水树脂.核技术,43(12).
MLA	叶枫,et al."辐射接枝交联制备海藻酸钠系高吸水树脂".核技术 43.12(2020).