为得到综合性能较优的高吸水性树脂,研究了氧化石墨烯(GO)对聚(丙烯酸/丙烯酰胺)[P(AA/AM)]高吸水树脂的改性作用。首先通过Hummers法制备了GO,采用水溶液合成法合成了P(AA/AM)-GO高吸水树脂,采用SEM、FT-IR、TGR等手段分析了改性高吸水树脂的微观结构及热性能,并对其进行了溶胀测试和保水性能测试;研究了GO质量浓度、单体配比、交联剂用量、引发剂用量等因素对P(AA/AM)-GO的耐盐性、吸水性的影响。结果表明,GO改性P(AA/AM)后,所得树脂的吸水倍率(QW)和吸盐水倍率(QS)分别为502g/g和122g/g,与市场上广泛使用的P(AA/AM)相比,耐盐性提高了2.8倍,热稳定性提高了58%,在100℃失水60min时保水率提高了21.5%。所以GO的加入能有效改善传统高吸水树脂的综合性能,同时拓宽了GO的应用领域。
In order to obtain super absorbent polymer with better overall performance,the effect of graphene oxide (GO) on the modification of P(AA/AM) super absorbent resin (SAP) was studied.Graphene oxide (GO) was synthesized through Hummers method,and P(AA/AM)-GO complex salt sensitive material was fabricated by aqueous solution.The microstructure and thermal properties of material were analyzed by SEM,FT-IR and TGR,and swelling tests,water retention were carried out.The effects of GO concentration,monomer ratio,crosslinking agent and initiator dosage on the salt resistance and water absorption of P(AA/AM)-GO were studied.The results indicated that GO was effectively introduced into P(AA/AM) resin,the optimum water absorbency(QW) and salt absorbency (QS) were 502g/g and 122g/g,respectively.Comparing with the extensive used P(AA/AM) super absorbent resin,saline absorption of P(AA/AM)-GO increased about 2.8 times,and thermal stability was increased by 58%,the water loss increased by 21.5% at 100℃ for 60min.the addition of GO effective improved the overall performance of conventional superabsorbent resins while broadening the application of GO as well.
[1] 刘廷国,李斌,朱坤坤,等.均相条件下甲壳素基高吸水树脂的制备及性能研究[J].高分子学报,2013(7):915-921.
[2] 郝琦玮,段晓宁,王趁义,等.海洋生物质材料/无机矿物材料改进高吸水树脂的研究进展[J].化工新型材料,2017,45(7):18-20.
[3] 易守红,王亚玲,王茹.皮革废弃物基农用缓肥保水高吸水树脂的生物降解性能研究[J].化工新型材料,2017,45(12):220-222.
[4] 郝琦玮,安岳,王趁义,等.高吸水性树脂性能缺陷及其改性策略的研究进展[J].高分子通报,2018,227(3):40-45.
[5] 补强,何方方,夏和生.石墨烯/橡胶纳米复合材料研究进展[J].高分子学报,2014(6):715-723.
[6] 张家恺,吴海宏,巴文兰,等.石墨烯对不同形貌钴酸镍结构和电化学性能的影响[J].材料保护,2017,50(9):31-35,47.
[7] 刘诗念,尹力,邓钏,等.机械研磨法还原氧化石墨及其结构表征[J].材料科学与工程学报,2016,34(5):698-701.
[8] 朱宏文,段正康,张蕾,等.氧化石墨烯的制备及结构研究进展[J].材料科学与工艺,2017,25(6):82-88.
[9] Zhao G X,Li J X,Renxue M,et al.Few-layered graphene oxide nanosheets as superior sorbents for heavy metalion pollution management[J].Environmental Science & Technology,2011,45(24):10454-10462.
[10] Zhao G X,Ren X M,Gao X,et al.Removal of Pb(Ⅱ) ions from aqueous solutions on few-layered graphene oxide nanosheets[J].Dalton Transactions,2011,40(41):10945-10952.
[11] Georgakilas V,Tiwari J N,Kemp K C,et al.Noncovalent function-nalization of grapheme and grapheme oxide for enengy materials,bio-sensing,catalytic,and biomedical applications[J].Chem Rev,2016,116(9):54-64.
[12] 方洁羽,李延报,李怀栋.丝素-氧化石墨烯-甘油复合膜的制备及性能[J].功能高分子学报,2015,28(1):73-78.
[13] 沈丁,杨绍斌,董伟,等.石墨烯及其聚合物复合材料在锂离子电池中的应用研究进展[J].高分子材料科学与工程,2016,32(9):184-190.
[14] Liu Q,Fei A,Huan J,et al.Effective amperometric biosensor for carbaryl detection based on covalent immobilization acetylcholinesterase on multiwall carbon nanotubes/graphene oxide nanoribbons nanostructure[J].Journal of Electroanalytical Chemistry,2015,740:8-13.
[15] 赵瑜,王雷,刘洋,等.聚合物/石墨烯智能复合材料及器件研究进展[J].化工新型材料,2017,45(9):9-11.
[16] 邓富泉,张丽,杨松,等.氧化石墨烯有序排列对碳纤维增强环氧树脂复合材料低温性能影响[J].高分子材料科学与工程,2017,33(7):38-44.
[17] Liu J,Chu H,Wei H,et al.Facile fabrication of carboxymethyl cellulose sodium/graphene oxide hydrogel microparticles for water purification[J].Rsc Advances,2016,6(55),50061-50069.
[18] Hummers W S Jr,Offeman R E.Preparation of graphitic oxide[J].J Am Chem Soc,1958,80:1339.
[19] Li X L,Wang X R,Zhang L,et al.Chenically derived,ultrasmooth graphene nanoribbon semiconductors[J].Science,2008,319:1229-1232.
[20] 李炜,张健,平清伟,等.壳聚糖基水凝胶的快速简便制备及性能[J].材料科学与工程学报,2015,33(2):231-234.
[21] 甘颖,徐继红,陶俊,等.阿拉伯胶基高吸水树脂的合成与吸水性能[J].精细化工,2017,34(9):982-987,1057.
[22] 糠艳茹,纪芳,李亚利.化学氧化法合成氧化石墨烯及其陶瓷复合材料[J].硅酸盐学报,2010,38(8):58-62.
[23] 王翠玲,侯宝龙,刘书林,等.聚(丙烯酸-醋酸乙烯酯)-聚乙烯醇互穿网络高吸水性树脂的合成[J].精细化工,2015,32(3):245-249,288.
基金资助
浙江省自然科学基金项目(LY16C150002);宁波市社发领域科技惠民项目(2017C50010);浙江省一流学科“生物工程”开放基金项目(KF2018004);浙江省一流学科“生物工程”学生创新项目(CX2018011和CX2018012);宁波市自然基金项目(2018A610286);浙江万里学院引进人才重点项目(1741000530)
PDF
(2496KB)
