以小麦秸秆纤维素(WSC)、红土(LA)、丙烯酸(AA)和丙烯酰胺(AM)为主要原料,采用自由基聚合法制备了一种低价、环保型的WSC-g-P(AA-co-AM)/LA复合吸水材料。通过红外光谱分析(FT-IR)及扫描电子显微镜(SEM)等物理表征对其结构及形貌进行了分析。探究了不同反应条件对材料吸液性能的影响,并对其保水性能进行了测试。结果表明:该复合吸水材料具有良好的吸水性能(蒸馏水790g/g,自来水290g/g,0.9% NaCl溶液95g/g)。探讨了土壤类型、材料粒径及含量对土壤中水分蒸发速率的影响,结果表明其在沙漠地区具有较好的应用前景。
Using wheat straw cellulose (WSC),laterite (LA),acrylic acid (AA) and acrylamide (AM) as the main raw materials,a low-cost,environmentally friendly superabsorbent composite WSC-g-P(AA-co-AM)/LA was prepared by free radical polymerization.Its structure and morphology were analyzed by physical characterization such as infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM).The effects of different reaction conditions on the liquid absorption properties of superabsorbent composites were explored,and their water retention properties were tested.The results showed that WSC-g-P(AA-co-AM)/LA had good water absorption properties (790g/g for distilled water,for tap water,and 95g/g for 0.9% NaCl solution).The effects of soil type,particle size and content on soil water evaporation rate were also investigated,and the results demonstrated that it had a good application prospect in desert areas.
[1] Cheng D,Liu Y,Yang G,et al.Water- and fertilizer-integrated hydrogel derived from the polymerization of acrylic acid and urea as a slow-release N fertilizer and water retention in agriculture[J].Journal of Agricultural and Food Chemistry,2018,66(23):5762-5769.
[2] 冯华伟,薛长国,林秀玲.海藻酸钠-碳材料复合凝胶吸附水中污染物的研究进展[J].化工新型材料,2021,49(3):241-244.
[3] 王婷婷,王金清,岳铭强,等.负载纳米银/石墨烯复合物的海藻酸钠水凝胶薄膜的制备及应用[J].复合材料学报,2021,38(9):3016-3025.
[4] Kang S H,Hong S G,Moon J.Absorption kinetics of superabsorbent polymers (SAP) in various cement-based solutions[J].Cement and Concrete Research,2017,97:73-83.
[5] Wang Y,Wang C,Zhao Y,et al.Effects of a superabsorbent resin with boron on bacterial diversity of peat substrate and maize straw[J].Accelerated Materials,2014,26:4370-4375.
[6] 李艳梅,胡鹏,贺龙强,等.绿色耐盐性海藻酸钠/高岭土基高吸水性树脂的制备研究[J].化工新型材料,2021,50(6):286-290.
[7] 梁鸿霞,李涛.微波法制备甘蔗渣/膨润土基高吸水树脂及性能研究[J].化工新型材料,2020,48(1):167-172.
[8] Fang S,Wang G,Xing R,et al.Synthesis of superabsorbent polymers based on chitosan derivative graft acrylic acid-co-acrylamide and its property testing[J].International Journal of Biological Macromolecules,2019,132:575-584.
[9] Wang W,Yang S,Zhang A,et al.Preparation and properties of novel corn straw cellulose-based superabsorbent with water-retaining and slow-release functions[J].Journal of Applied Polymer Science,2020,137(32):1-12.
[10] Ashkani M,Bouhendi H,Kabiri K,et al.Synthesis of poly (2-acrylamido-2-methyl propane sulfonic acid) with high water absorbency and absorption under load (AUL) as concrete grade superabsorbent and its performance[J].Construction and Building Materials,2019,206:540-551.
[11] Zhang J P,Zhang F S.Recycling waste polyethylene film for amphoteric superabsorbent resin synthesis[J].Chemical Engineering Journal,2018,331:169-176.
[12] Zhu W,Zhang Y,Wang P,et al.Preparation and applications of salt-resistant superabsorbent poly(acrylic acid-acrylamide/fly ash) composite[J].Materials (Basel),2019,12(4):596.
[13] Huang Y,Zeng M,Ren J,et al.Preparation and swelling properties of graphene oxide/poly(acrylic acid-co-acrylamide) super-absorbent hydrogel nanocomposites[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2012,401:97-106.
[14] Peng N,Hu D,Zeng J,et al.Superabsorbent cellulose-clay nanocomposite hydrogels for highly efficient removal of dye in water[J].ACS Sustainable Chemistry & Engineering,2016,4(12):7217-7224.
[15] Meng H,Zhang X,Sun S,et al.Preparation of γ-aminopropyltriethoxysilane cross-linked poly(aspartic acid) superabsorbent hydrogels without organic solvent[J].Journal of Biomaterials Science,Polymer Edition,2016,27(2):133-143.
[16] Gao J,Liu J,Peng H,et al.Preparation of a low-cost and eco-friendly superabsorbent composite based on wheat bran and laterite for potential application in Chinese herbal medicine growth[J].Royal Society Open Science,2018,5(5):180007.
[17] Yang J,Wang F,Liu Z,et al.Early-state water migration characteristics of superabsorbent polymers in cement pastes[J].Cement and Concrete Research,2019,118:25-37.
[18] Fang S,Wang G,Li P,et al.Synthesis of chitosan derivative graft acrylic acid superabsorbent polymers and its application as water retaining agent[J].International Journal of Biological Macromolecules,2018,115:754-761.
[19] Huang Z,Liu S,Fang G,et al.Synthesis and swelling properties of β-cyclodextrin-based superabsorbent resin with network structure[J].Carbohydrate Polymers,2013,92(2):2314-2320.
[20] Qiao D,Liu H,Yu L,et al.Preparation and characterization of slow-release fertilizer encapsulated by starch-based superabsorbent polymer[J].Carbohydrate Polymers,2016,147:146-154.
[21] Cheng S,Liu X,Zhen J,et al.Preparation of superabsorbent resin with fast water absorption rate based on hydroxymethyl cellulose sodium and its application[J].Carbohydrate Polymers,2019,225:115214.
[22] Feng E,Ma G,Wu Y,et al.Preparation and properties of organic-inorganic composite superabsorbent based on xanthan gum and loess[J].Carbohydrate Polymers,2014,111:463-468.
[23] Zhu W,Zhang Y,Wang P,et al.Preparation and applications of salt-resistant superabsorbent poly(acrylic acid-acrylamide/fly ash) composite[J].Materials(Basel),2019,12(4):596.
[24] Yu X,Wang Z,Liu J,et al.Preparation,swelling behaviors and fertilizer-release properties of sodium humate modified superabsorbent resin[J].Materials Today Communications,2019,19:124-130.
[25] Peng F,Guan Y,Zhang B,et al.Synthesis and properties of hemicelluloses-based semi-IPN hydrogels[J].International Journal of Biological Macromolecules,2014,65:564-572.
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