将聚丙烯酸钠引入纳米Fe3O4/γ-甲基丙烯酰氧基丙基三甲氧基硅烷(TPM)/聚丙烯酰胺(PAM)磁性复合水凝胶体系中,制备了互穿聚合物网络(IPN)超强磁性水凝胶.采用透射电镜(TEM)、激光粒度分析仪、扫描电镜(SEM)、压缩试验机和样品振动磁强计对Fe3O4纳米粒子的粒径、Pickering乳液的结构及水凝胶的结构与性能进行了测试与表征.结果表明,IPN改性水凝胶在保持原复合水凝胶优异性能的基础上,其断面结构比未改性的更为规整,水凝胶的内部缺陷减少;改性水凝胶的抗压强度可达2.8MPa以上,远高于未改性水凝胶的强度;改性水凝胶需要约50min达溶胀平衡,平衡时的溶胀率为24.9;改性后的水凝胶中Fe3O4纳米粒子的磁性并未受到影响.
参考文献
| [1] | 林荣珍,苗晶,董声雄.壳聚糖硫酸酯pH敏感性水凝胶的制备及其性能[J].材料科学与工程学报,2008(06):950-953,957. |
| [2] | Liu H;Wang C;Gao .Magnetic hydrogels with supracolloidal structures prepared by suspension polymerization stabilized by Fe(2)O(3) nanoparticles.[J].Acta biomaterialia,2010(1):275-281. |
| [3] | Liu TY;Hu SH;Liu TY;Liu DM;Chen SY .Magnetic-sensitive behavior of intelligent ferrogels for controlled release of drug[J].Langmuir: The ACS Journal of Surfaces and Colloids,2006(14):5968-5978. |
| [4] | Resendiz-Hernandez P J;Rodriguez-Fernandez O S;Garcia-Cerda L A .Synthesis of poly (vinyl alcohol)-magnetite ferrogel obtained by freezing-thawing technique[J].Journal of Magnetism and Magnetic Materials,2008,320(14):373-376. |
| [5] | Ramanujan RV;Lao LL .The mechanical behavior of smart magnet-hydrogel composites[J].Smart Materials & Structures,2006(4):952-956. |
| [6] | 李旺,刘兵发,杜国平,刘宇,李颖毅,万军花.纳米Fe3O4/聚乙烯醇磁性水凝胶的制备及性能[J].材料导报,2009(z2):174-176. |
| [7] | 章志斌,杜国平,李旺,谢玮玮,LI Xin-sheng,WAN Wan-kei.冻融法制备微米级Fe3O4/聚乙烯醇磁性水凝胶及其磁力学性能研究[J].现代化工,2008(09):60-63. |
| [8] | Yoshimi Tanaka;Jain Ping Gong;Yoshihito Osada .Novel hydrogels with excellent mechanical performance[J].Progress in Polymer Science,2005(1):1-9. |
| [9] | 周俊宇,聂景怡,李友良,王征科,胡巧玲.LiOH/尿素溶剂体系制备高强度壳聚糖水凝胶膜[J].材料科学与工程学报,2013(04):525-528. |
| [10] | Tokárová, V.;Pittermannová, A.;Ech, J.;Ulbrich, P.;Tpánek, F. .Thermo-responsive adhesion properties of composite hydrogel microcapsules[J].Soft matter,2012(4):1087-1095. |
| [11] | 刘远朋,吴仲岿,夏翠,卢汉民.纳米SiO2/TPM/丙烯酰胺复合高强凝胶的制备及性能研究[J].湖北大学学报（自然科学版）,2012(01):73-76. |
| [12] | 卢汉民,吴仲岿,刘远朋,陈曦,朱龑昭,王艺峰.基于Pickering乳液的磁性高强水凝胶的制备及性能表征[J].高分子学报,2013(04):504-510. |
| [13] | Massart R .Preparation of aqueous magnetic liquids in alkaline and acidic media[J].Magnetics,IEEE Transactions on,1981,17(2):1247-1248. |
| [14] | Sacanna S;Kegel WK;Philipse AP .Thermodynamically stable pickering emulsions[J].Physical review letters,2007(15):8301-1-8301-4-0. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%