国产一级a毛一级a看免费视频,久久久久久国产一级AV片,免费一级做a爰片久久毛片潮,国产精品女人精品久久久天天,99久久久无码国产精品免费了

作者： Farzad Zahedi^a,  Iraj Amiri Amraei^a,  Mohammad Ali Fathizade^b 

^a Composite Research Center, Malek Ashtar University of Technology, Tehran, Iran

^b Iran Polymer and Petrochemical Institute, Tehran, Iran

 

 

摘要：In order to study the dynamic-mechanical properties of multilayer latex interpenetrating polymer networks (MLIPNs), a series of core/shell/shell particles with styrene-acrylic monomers were synthesized using semi-continuous emulsion polymerization and, after the film formation process, they were evaluated using dynamic-mechanical analysis (DMA). In this study, the size and size distribution of synthesized particles and also the surface topology of the resulting films were investigated via dynamic laser scattering (DLS) and atomic force microscopy (AFM), respectively which represents narrow dispersive particles in a nano-scale. In order to investigate the quality and quantity of glass transitions in the multilayer structure of synthesized particles, temperature-modulated differential scanning calorimetry (TOPEM-DSC) was used.

 

The experimental works show that the difference between adjacent layers Tg, the final layer mass ratio, the amount of cross linker in the inner layers, and the monomer feeding method were highly effective on the dynamic-mechanical properties of the synthesized particles.

 

關鍵詞：Multilayer core/shell; Latex; Interpenetrating polymer network (IPN); Damp