Interpenetration Control and Utilization

It is difficult to determine the interpenetration in amorphous porous polymers. Haranczyk et al. set up some non-interpenetration and interpenetration models of porous polymer networks (PPNs) based on the ideal crystalline model with dia topology. They systematically compared the simulated pore diameter, framework density, simulated pore volume, and experimental pore diameter and pore volume of non-interpenetration and interpenetration models of PAF-1 (PPN-6), PPN-4 and other PPNs (PPN-2, PPN-3, PPN-5). The results indicated that for PPN-4, PPN-5 and PPN-6 (PAF-l), the simulated methane adsorption isotherm of the non-interpenetrated structure compared favourably with the experimental data. This strongly supports that the experimental strueture ean be well modeled by the non-interpenetrated dia net. On the eontrary, the experimental data of the pore 

Reprinted with permission from F. J. Urihe-Romo, J. R. Hunt, H. Furukawa, C. iGock, M. O Keeffe and O. M. Yaghi,/ Am. Chem. Soc., 2009, 131, 4570. Copyright 2009 American Chemical Society. 

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