欢迎登录材料期刊网

材料期刊网

高级检索

将核壳微凝胶包埋在两性基质中,制备了复合水凝胶(CAH).研究发现,利用微凝胶与聚合物链之间的物理缠结作用,可以使复合凝胶具有致密的网络结构,力学性能显著提高;复合凝胶对pH和离子强度敏感,呈现出典型的两性聚电解质凝胶的溶胀行为.同时微凝胶的存在和特殊的复合结构,可赋予CAH两性凝胶基质所不具有的响应性,并实现在高温下快速响应.

参考文献

[1] Johnson J A,Turro N J,Koberstein J T,et al.Some Hydrogels Having Novel Molecular Structures[J].Prog Polym Sci,2010,35 (3):332-337.,2010.
[2] Ruel-Gariépy E,Leroux J C.In Situ-forming Hydrogels-Review of Temperature-sensitive Systems[J].Eur J Pharm Biopharm,2004,58 (2):409-426.,2004.
[3] Lee K Y,Mooney D J.Hydrogels for Tissue Engineering[J].Chem Rev,2001,101(7):1869-1880.,2001.
[4] Van Tomme S R,Storm G,Hennink W E.In Situ Gelling Hydrogels for Pharmaceutical and Biomedical Applications[J].Int J Pharm,2008,355(1/2):1-18.,2008.
[5] Calvert P.Hydrogels for Soft Machines[J].Adv Mater,2009,21(7):743-756.,2009.
[6] Nagase K,Kobayashi J,Okano T.Temperature-responsive Intelligent Interfaces for Biomolecular Separation and Cell Sheet Engineering[J].J R Soc Interface,2009,6 (Suppl 3):S293-S309.,2009.
[7] Ogawa Y,Ogawa K,Kokufuta E.Swelling-shrinking Behavior of a Polyampholyte Gel Composed of Positively Charged Networks with Immobilized Polyanions[J].Langmuir,2004,20 (7):2546-2552.,2004.
[8] Xu K,Wang J,Xiang S,et al.Polyampholytes Superabsorbent Nanocomposites with Excellent Gel Strength[J].Cornpos Sci Technol,2007,67 (15/16):3480-3486.,2007.
[9] 徐昆,陈强,项盛,岳玉梅,张文德,王丕新.两性纳米复合高吸水性树脂的结构与性能[J].高等学校化学学报,2006(12):2417-2421.
[10] Armentrout R S,McCormick C L,Water Soluble Polymers.76.Electrolyte Responsive Cyclocopolymers with Sulfobetaine Units Exhibiting Polyelectrolyte or Polyampholyte Behavior in Aqueous Media[J].Macromolecules,2000,33 (2):419-424.,2000.
[11] Skouri M,Munch J P,Candau S J,et al.Conformation of Neutral Polyampholyte Chains in Salt-solutions-A Light-Scattering Study[J].Macromolecules,1994,27 (1):69-76.,1994.
[12] Thevenot C,Khoukh A,Reynand S,et al.Kinetic Aspects,Rheological Properties and Mechanoelectrical Effects of Hydrogels Composed of Polyacrylamide and Polystyrene Nanoparticles[J].Soft Matter,2007,3 (4):437-447.,2007.
[13] Chen Q,Xu K,Zhang W D,et al.Preparation and Characterization of Poly(N-isopropylacrylamide)/Polyvinylamine Coreshell Microgels[J].Colloid Polym Sci,2009,287(11):1339-1346.,2009.
[14] Lynch I,Dawson K A.Synthesis and Characterization of an Extremely Versatile Structural Motif Called the "Plumpudding" Gel[J].J Phys Chem B,2003,107(36):9629-9637.,2003.
[15] Salvati A,Soderman O,Lynch I.Plum-pudding Gels as a Platform for Drug Delivery:Understanding the Effects of the Different Components on the Diffusion Behavior of Solutes[J].J Phys Chem B,2007,111 (25):7367-7376.,2007.
[16] Hu J,Kurokawa T,Nakajima T,et al.High Fracture Efficiency and Stress Concentration Phenomenon for Microgel-Reinforced Hydrogels Based on Double-Network Principle[J].Macromolecules,2012,45 (23):9445-9451.,2012.
[17] Zhang X Z,Chu C C.Fabrication and Characterization of Microgel-impregnated,Thermosensitive PNIPAAm Hydrogels[J].Polymer,2005,46 (23):9664-9673.,2005.
[18] Zhang J T,Huang S W,Xue Y N,et al.Poly (N-isopropylacrylamide) Nanoparticle-incorporated PNIPAAm Hydrogels with Fast Shrinking Kinetics[J].Macromol Rapid Comm,2005,26(16):1346-1350.,2005.
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:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%