私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

Links
Contact Info.
  • Address:長春市延安大街2055號(hào) 長春工業(yè)大學(xué) 科研樓704房間
  • Zip:130012
  • Tel:+86-431-85717352
  • Fax:+86-431-85716465
  • Email:ghgao@ccut.edu.cn
Current Location :> Home > Publications > Text
39. Robust, tough and anti-fatigue cationic latex composite hydrogels based on dual physically cross-linked networks
writer:Song Gu, Lijie Duan, Xiuyan Ren, Guang Hui Gao
keywords:Cationic latexes, Adsorption, Hydrophobic association Ionic crosslinking, Hydrogels, Dual physically crosslinking ,Mechanical properties
source:期刊
specific source:Journal of Colloid and Interface Science
Issue time:2017年
  Dual physically cross-linked hydrogels, which are triggered by cationic latexes as hydrophobic association and ionic crosslinking centers, were easily fabricated via a one-pot in situ polymerization method. First, the hydrophobic alkyl chains of hydrophobic monomers are adsorbed on the surface of latex microspheres and stabilized in the presence of surfactants, forming hydrophobic association centers as the first physical crosslinking points. Meanwhile, the anionic sulfate radicals dissociated by persulphate are attracted towards the cationic molecular chains of latex microspheres through ionic interactions, forming the secondary physical crosslinking centers, and initiate the copolymerization between acrylamide and hydrophobic vinyl monomers. The fabricated hydrogel exhibited high tensile strength of 1.32 MPa, a remarkable toughness of 4.53 MJ m 3, excellent self-recovery properties and fatigue resistance. Therefore, the current work provides a promising strategy for designing novel hydrogels via multiple physical interactions and devoid of any chemical crosslinking. The novel design of hydrogels can enhance their mechanical properties and expand their biomedical applications.