王宇欣,李雪嫄,赵亚楠,王平智.硼缓释型高吸水性树脂制备与性能表征[J].农业机械学报,2019,50(7):340-348.
WANG Yuxin,LI Xueyuan,ZHAO Ya’nan,WANG Pingzhi.Preparation and Performance Characterization of Boron Sustained-release Super Absorbent Resin[J].Transactions of the Chinese Society for Agricultural Machinery,2019,50(7):340-348.
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硼缓释型高吸水性树脂制备与性能表征   [下载全文]
Preparation and Performance Characterization of Boron Sustained-release Super Absorbent Resin   [Download Pdf][in English]
投稿时间:2019-04-06  
DOI:10.6041/j.issn.1000-1298.2019.07.037
中文关键词:    高吸水性树脂  缓释  性能表征  制备
基金项目:公益性行业(农业)科研专项(201503137)
作者单位
王宇欣 中国农业大学 
李雪嫄 中国农业大学 
赵亚楠 中国农业大学 
王平智 中国农业大学 
中文摘要:以硼酸、丙三醇为原料,通过微波酯化法制备了硼酸双甘酯。以硼酸双甘酯和丙烯酰氯为原料合成了硼酸甘油丙烯酯,以此作为含硼功能单体,成功制备了以羟丙基甲基纤维素为骨架的硼缓释型高吸水性树脂。根据吸水倍率筛选含硼功能单体最佳添加量,并对产物的吸液倍率、吸液速率、保水性能以及基团结构和表观形貌进行了表征。由红外光谱曲线可以看出,试验成功制备了具有双键结构的硼酸甘油丙烯酯,并通过接枝聚合反应合成了含硼高吸水性树脂;当含硼功能单体添加量为丙烯酸质量的1%时,羟丙基甲基纤维素含硼高吸水性树脂吸水倍率为344.06g/g、吸盐倍率为44.71g/g;35℃条件下,该含硼高吸水性树脂可保水72h;重复使用6次后,该高吸水性树脂重复吸水率仍可达到60%以上,重复吸盐率仍可达到40%以上;该高吸水性树脂具有良好的硼缓释性,在去离子水中可持续缓释10d,缓释硼总质量达182.77μg,在育苗基质中可持续释放25d,当添加量为育苗基质质量的0.5%时,混合基质淋溶硼量比普通基质多0.80μg/g。此外,羟丙基甲基纤维素含硼高吸水性树脂还具有良好的热稳定性,其表观形貌特征有利于促进对液体的吸收。
WANG Yuxin  LI Xueyuan  ZHAO Ya’nan  WANG Pingzhi
China Agricultural University,China Agricultural University,China Agricultural University and China Agricultural University
Key Words:boron  super absorbent resin  sustained-release  performance characterization  preparation
Abstract:Diglyceride borate was successfully prepared from boric acid and glycerol by clean and efficient microwave esterification. Then glycerol propylene borate was synthesized successfully from glycerol borate and acryloyl chloride. Boron sustained release super absorbent resin with hydroxypropyl methyl cellulose (HPMC) as the framework was successfully prepared using propylene glycerol borate as the functional monomer containing boron. At the same time, the water absorption ratio, water absorption rate, water holding capacity, structure and morphology of the product were characterized. From the results of infrared spectra, it can be seen that glycerol propylene borate with double bond structure was successfully prepared and boron containing super absorbent resin was successfully synthesized by graft copolymerization. The results showed that with the increase of boron-containing functional monomers, the absorption ratio of boron containing HPMC superabsorbent resin was decreased gradually. When the addition of boron containing functional monomers was 1% of the mass of acrylic acid, the water absorption ratio of HPMC boron containing super absorbent resin was 344.06g/g and the salt absorption ratio was 44.71g/g. When the amount of boron containing functional monomers was 5% of the mass of acrylic acid, the water absorption ratio of HPMC boron-containing super absorbent resin was decreased to 213.69g/g and the salt absorption ratio was decreased to 26.03g/g. The super absorbent resin had good water retention and could hold water for more than 72h at 35℃. The super absorbent resin had good water retention. The water retention rate could still reach 23.46% after 72h of water absorption to saturation at 35℃. The super absorbent resin had good reusability. After 6 times of reuse, the repetitive absorbent water could still reach more than 60% and the repetitive salt absorption rate could still reach more than 40%. The super absorbent resin had good sustained-release property of boron, and it could sustainably release boron in deionized water for 10d. The sustained release amount of boron reached 182.77μg. It could sustainably release boron in seedling matrix for more than 25d. When the addition amount was 0.5% of the quality of seedling matrix, boron leaching from mixed substrates was 0.80μg/g more than that from common substrates. In addition, HPMC boron-containing super absorbent resin also had good thermal stability, and its morphological characteristics were conducive to promoting the absorption of liquids.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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