Some results of structural analyses for interfacial phase of particle-filled composite and pressure-sensitiveadhesive（ PSA） using the 1H pulse nuclear magnetic resonance（ pulse NMR） measurement were reviewed.The influence of loading method of silane coupling agent on the mechanical properties of silica-filled rubbercomposite were investigated. It was higher in the integral blend method than in the pre-treatment method. Thereason was clarified by the relaxation spectrum for the unvulcanized silica/rubber mixture. The crosslinkedpoly（ n-butyl methacrylate） particles were dispersed in poly（ vinyl chloride）. This pair is completely miscible,whereas mutual diffusion of both polymers is restricted within the interfacial phase by the crosslinking points.The interfacial thickness was estimated using the pulse NMR. Tackifier exists as both dissolved moleculeand agglomerated particle in PSA. The relative ratio of agglomerated particle is able to estimate using thedifference spectrum of pulse NMR. From the comparison of difference spectra for vulcanized rubber andcrosslinked polyacrylic PSA, the restriction of molecular mobility by the intermolecular interaction was foundto be far larger in PSA than in the vulcanized rubber.

Colloidal products such as milk, sports drinks, lotions, inks and woodworking adhesives often aggregateand so their performance is degraded. When the particles aggregate, the texture and appearance becomeworse. For example, aggregated pigment particles in ink cause color defects, color unevenness, and cracking.Therefore, it is important to evaluate the dispersion stability of colloidal products. Zeta potential is avery useful parameter for evaluating the dispersion stability of colloids. Basic theory about zeta potentialmeasurement are introduced in this review.

接着・粘着接合部の座屈を表現するために，被着体をはり，接着・粘着層を弾性体とするWinkler モデルを用いた座屈解析を行った。弾性基礎上に置かれたはりに圧縮荷重が負荷されるとはり単体が圧縮されるよりも座屈しにくいことが知られている。しかしながら理想的な圧縮荷重を想定した完全系の座屈解析では，座屈荷重と座屈モードは求まるが圧縮過程での変形などは議論できない。そこで本研究では，初期不整を想定した不完全系での座屈解析を行うことで圧縮過程での被着体の変形や初期不正に伴う座屈モードの変化を明らかにした。また，粘着剤によって接着接合されたアクリル板に圧縮荷重を加える座屈実験から座屈現象の考察を行った。

Infrared（IR）spectroscopy has been a powerful tool for chemical structural analysis of adhesive interfaces thanks to its high sensitivity to polar functional groups. However, its spatial resolution is limited to a few micrometers at most by diffraction limit. Recently, combination of AFM with IR laser sources develops several kinds of IR spectroscopy with nanometer spatial resolution. Among them, AFM-IR which detects IR absorption through photothermal expansion of a sample has been used widely in both academic and industrial fields. The principle of AFM-IR and its applications to interfacial analyses are introduced.