Inter-particle pores

As discussed elsewhere in detail (Chapter 5, [B.13b, B.48, B.97]), while particulate solids are densified, the fluids that occupy the inter-particle pore space must be removed instantly and completely as this volume diminishes. When very high compaction forces are applied, towards the end of pressing, fluids in pores within breaking and/or deforming particles must be considered, too. During this removal process, which is controlled by fluid flow and diffusion, gases and liquids behave quite differently. 

Spin-on silicalite thin films were prepared from silicalite nanocrystals. Spin-on silicalite films with high porosity have a dielectric constant (k) of 1.8-2.2. A secondary growth of nanocrystals was carried out on spin-on films under microwave treatment. It was found that a secondary growth of nanocrystals by microwave treatment could increase the mechanical strength and control the inter-particle pore size and porosity of spin-on silicalite films. Microwave-treated spin-on films have a k value of 2.2-2.4. The effect of moisture on k value was also studied. The silylation of silicalite films with chlorotrimethylsilane was conducted to eliminate the effect of moisture on the dielectric constant. It was revealed that stable k values were obtained after silylation. 

Fiberboards consist, in principle, of three phases inter-particle pores, fiber lumens, and cell wall material. In the CDF plot (Fig. 4) the sum of the voids (inter-particle pores and fiber lumens) is shown. Lux et al. [7] used dilation in their evaluation of... 

Solid materials have a cohesive stmcture, which depends on the interaction between the primary particles. The cohesive stmcture leads indispensably to a void space, which is not occupied by the composite particles such as atoms, ions, and line particles. Consequently, the state and population of such voids strongly depends on the inter-particle forces. The inter-particle forces are different from one system to another chemical bonding, van der Waals force, electrostatic force, magnetic force, surfece tension of adsorbed films on the primary particles, and so on. Even die single crystalline solid, which is composed of atoms or ions has intrinsic voids and defects. Therefore, pores in solids are classified into intra-particle pores and inter-particle pores (Table 9.6) [80]. 

When a foreign substance is impregnated in the parent material in advance this is removed by a modification procedure [84]. This type of pores should be called extrinsic intra-particle pores. Strictly speaking, as the material does not contain other components, extrinsic pure intra-particle pore is recommended. However, the extrinsic intra-pore can be regarded as the inter-particle pore in some cases. 

Carbonates with isolated inter-particle pores 45-60 w... 

Carbonates with connected inter-particle pores or diagenetic-formed pores 60-110 w... 

---