Copolymerscomposed of methyl methacrylate(MMA) and methoxypolyethyleneglycol methacrylate(MPEGMA) as a hydrophilic component were synthesized and their dynamic wettabilities and anti-fogging capabilities were investigated circumstantially. These copolymers showed a high hydro-philicity at the interface in contact with an aqueous phase. In addition,　since these copolymers had a significant contact angle hysteresis(Δθ), it was shown that the segmental responsiveness corresponding to an environmental medium was sharp. The anti-fogging capability of glass coated with these copolymers improved with an increase in MPEGMA content. This kind of copolymer could be used as ananti-fogging material having environmental responsiveness. Furthermore, for the samples, which were cured by UV irradiation using polyethyleneglycol dimethacrylate(PEG-DMA) to the surface of these copolymers were also studied. For the UV-cured samples, two surface structural models correlating to the amount of PEGDMA addition were proposed by using the dynamic wettability analysis. Although these sample surfaces also showed a high hydrophilicity, the Δθ had a very small value. From this result, it was clearly shown that the segmental mobility on these sample surfaces was suppressed greatly. In addition, all of the sample surfaces showed a high anti-fogging property and were also good for the reproducibility.

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Adhesive property to the metals of sulfur containing linear polythioesters synthesized from bis(4,4'-mercaptophcnyl)sulfide(MPS) and several acyl dichlorides(AC) have been investigated because sulfur has a strong interaction to metals. The evaluation of the adhesion to steel and coppe rplate was carried out with the method of lap shear test. The MPS polythioesters displayed higher lap shear strengths than the corresponding TDP polyesters derived from bis(4,4'-hydroxyophenyl)sulfide(TDP). Thus, it is clarified that the thioester bond of the MPS polythioester has a beneficial effect on the adhesion to the metals in comparison with the ester bond of the TDP polyester.Because of better adhesive strength of the MPS polythioesters in comparison with PET, the effect of addition of polythioesters to PET was investigated. The addition of the MPS polythioesters brought significant improvement on adhesion of PET to steel plate. Unfortunately, the addition of the polythioesters depressed the adhesion of PET to copper plate.

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