Fabrication of nanocomposites during the crystalline growth of layered double hydroxides using grafted collagen as template
首发时间:2010-02-26
Abstract:To achieve morphology and size control of layered double hydroxides (LDH) in polymer/LDH hybrid materials, a mineralization method was employed based on graft polymerization of methyl methacrylate (MMA) onto collagen and successive impregnation of LDH into the interstices of grafted collagen matrix. As the results indicated, grafted collagen was pH-dependent in morphology, forming functionalized copolymer network at pH 2.5. In the subsequent templating synthesis, the adsorption of collagen to metal ions as well as LDH generated in-situ was enhanced by grafted PMMA, suggested by basal layer spacing of LDH increasing from 7.6 ?to 8.7 ? The growth of LDH crystallites was inhibited by the grafted copolymer, filling the template voids of the matrix network in the form of nano-scaled clubs. This type of novel hybrid biomaterial exhibited potential use in infrared camouflage by achieving a minimum emissivity value of 0.382 due to regular and ordered inorganic-organic combinations with large synergistic interfaces at molecular level.
keywords: Collagen Layered double hydroxides Graft copolymerization Infrared emissivity
点击查看论文中文信息
Fabrication of nanocomposites during the crystalline growth of layered double hydroxides using grafted collagen as template
摘要:To achieve morphology and size control of layered double hydroxides (LDH) in polymer/LDH hybrid materials, a mineralization method was employed based on graft polymerization of methyl methacrylate (MMA) onto collagen and successive impregnation of LDH into the interstices of grafted collagen matrix. As the results indicated, grafted collagen was pH-dependent in morphology, forming functionalized copolymer network at pH 2.5. In the subsequent templating synthesis, the adsorption of collagen to metal ions as well as LDH generated in-situ was enhanced by grafted PMMA, suggested by basal layer spacing of LDH increasing from 7.6 ?to 8.7 ? The growth of LDH crystallites was inhibited by the grafted copolymer, filling the template voids of the matrix network in the form of nano-scaled clubs. This type of novel hybrid biomaterial exhibited potential use in infrared camouflage by achieving a minimum emissivity value of 0.382 due to regular and ordered inorganic-organic combinations with large synergistic interfaces at molecular level.
关键词: Collagen;Layered double hydroxides;Graft copolymerization;Infrared emissivity
基金:
论文图表:
引用
No.4026951608512671****
同行评议
共计0人参与
勘误表
Fabrication of nanocomposites during the crystalline growth of layered double hydroxides using grafted collagen as template
评论
全部评论0/1000