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@ARTICLE{Luna:482796,
      author       = {Luna, Fernando Vazquez and Maurya, Anjani K. and de Souza e
                      Silva, Juliana Martins and Dittrich, Guido and Paul, Theresa
                      and Enke, Dirk and Huber, Patrick and Wehrspohn, Ralf and
                      Steinhart, Martin},
      title        = {{S}traight versus {S}pongy: {E}ffect of {T}ortuosity on
                      {P}olymer {I}mbibition into {N}anoporous {M}atrices
                      {A}ssessed by {S}egmentation-{F}ree {A}nalysis of 3{D}
                      {S}ample {R}econstructions},
      journal      = {The journal of physical chemistry / C},
      volume       = {126},
      number       = {30},
      issn         = {1932-7447},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {PUBDB-2022-04952},
      pages        = {12765 - 12779},
      year         = {2022},
      note         = {Waiting for fulltext},
      abstract     = {We comparatively analyzed imbibition of polystyrene (PS)
                      into two complementary pore models having pore diameters of
                      ∼380 nm and hydroxyl-terminated inorganic-oxidic pore
                      walls, controlled porous glass (CPG) and self-ordered porous
                      alumina (AAO), by X-ray computed tomography and EDX
                      spectroscopy. CPG contains continuous spongy-tortuous pore
                      systems. AAO containing arrays of isolated straight
                      cylindrical pores is a reference pore model with a
                      tortuosity close to 1. Comparative evaluation of the
                      spatiotemporal imbibition front evolution yields important
                      information on the pore morphology of a probed tortuous
                      matrix like CPG and on the imbibition mechanism. To this
                      end, pixel brightness dispersions in tomographic 3D
                      reconstructions and 2D EDX maps of infiltrated AAO and CPG
                      samples were condensed into 1D brightness dispersion
                      profiles normal to the membrane surfaces. Their statistical
                      analysis yielded positions and widths of the imbibition
                      fronts without segmentation or determination of pore
                      positions. The retardation of the imbibition front movement
                      with respect to AAO reference samples may be used as a
                      descriptor for the tortuosity of a tested porous matrix. The
                      velocity of the imbibition front movements in CPG equaled
                      two-thirds of the velocity of the imbibition front movements
                      in AAO. Moreover, the dynamics of the imbibition front
                      broadening discloses whether porous matrices are dominated
                      by cylindrical neck-like pore segments or by nodes.
                      Independent single-meniscus movements in cylindrical AAO
                      pores result in faster imbibition front broadening than in
                      CPG, in which a morphology dominated by nodes results in
                      slower cooperative imbibition front movements involving
                      several menisci. The results presented here may be relevant
                      to applications including printing and adhesive bonding, as
                      well as to the optimization of production and properties of
                      engineering, construction, and hybrid materials.},
      cin          = {CIMMS / TUHH},
      ddc          = {530},
      cid          = {I:(DE-H253)CIMMS-20211022 / I:(DE-H253)TUHH-20210331},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000887041700001},
      doi          = {10.1021/acs.jpcc.2c01991},
      url          = {https://bib-pubdb1.desy.de/record/482796},
}