Some experiments were carried out to investigate the properties of silk fabric treated with silicone resin by means of the variation of time, temperature, concentration, and curing condition. The result obtained were summarized as follows; 1) The weight gains increased with the increase of concentration of silicone resin solution, while the moisture regains decreased. 2) The crease recovery and the elongation of silk fabric treated with silicone resin increased with the increase of the weight gains of resin, while the tensile strength decreased. The stiffness of treated silk fabric was excellent. 3) Acidic or basic amino acid in silk showed a reaction with silicone resin. 4) The yellowing decreased with the increase of resin gains of silk fabric. 5) The surface of silk fabric was coarse with the increase of the resin gains.

In order to investigate the effect of structural conditions of fabrics on the handle, thirty six kinds of nylon 6 filmament fabrics having different yarn count, woven structure, and cloth count were woven. They were evaluated by measuring sixteen mechanical properties using KES-F hand evaluating system.

The co-polyamides (PPIT) containing the meta-linkage were synthesized from p-phenylene diamine with terephthaloyl chloride and isophthaloyl chloride. The another type of co-polyamides (PPMT) containing meta-linkage were synthesized from terphthaloyl chloride with p-phenylene diamine and m-phenylene diamine. Increasing the meta-contents both in phenylene diamine of PPMT and in phthaloyl chloride of PPIT significantly lowered the inherent viscosities of PPIT and PPMT. The inherent viscosity of PPIT is higher than that of PPMT at equal meta-contents. The viscosities, however, measured by Brook Field Viscometer of the PPIT were lower than those of PPMT with the same meta-contents at 30 rpm. The decomposition and the glass transition temperatures decreased with increasing meta-contents. Apparently, the decomposition temperature depends more or less on the type of meta-linkage. On the contrary, the glass transition temperatures of PPIT were higher than those of PPMT with equal meta-contents. Thus, it may be inferred that PPIT have structurally higher rigidity compared to PPMT. The size and the amount of liquid crystals decreased with increasing meta-contents, but liquid crystals of PPMT were samller both in size and in amount than those of PPIT at the same metacontents.

The copolymers of acrylic acid(AA) and methacrylic acid(MA) with various compositions were synthesized in benzene using benzoyl peroxide as an initiator. Then the compositions of the copolymers were determined with FT-IR analysis. The reactivity ratios of AA and MA were also determined. The compositions of the copolymers could be determined by FT-IR analysis more easily and precisely than elemental analysis or NMR analysis. The results show that the content of MA unit in the copolymer was greater than the feed ratio of MA in AA/MA copolymerization. The reactivity ratios of AA and MA are 0.668 and 1.530, respectively. Since the product of the two reactivity ratios is approximately unity (rArM 1), this copolymerization can be termed ideal.

Polyacrylic acid (PAA), polymethacylic acid(PMA), and AA/MA copolymers were synthesized and the reaction of La(III) with then was investigated. The original polymer solution ($\alpha$=0) was potentiometrically titrated with the fully neutalized polymer solution($\alpha$=1) in the absence or presence of La(III) ions. From the data of polymer-La(III) system it was possible to calculate the number of carboxylate ions bound to one La(III) and to predict which polymer bind La(III) more easily at the same conditions. The results show that there is a specific binding between La(III) and polymeric acids(PAA, PMA, AA/MA copolymers) and that one La(III) binds three carboxylate ions so that a 3:1 complex is formed. The amount of La(III) bound to the polymeric acids is increased in the order of PAA > AA/MA copolymer > PMA at the same degree of neutralization. The IR spectrum of the polymer-La complex indicates that the binding between them is ionic. The complex has better thermal stability than the original polymer.

Poly(ethylene terephthalate) fiber was pretreated with biphenyl/methylene chloride and other solutions. Other solutions used in this experiment were methylene chloride, perchloroethylene/methylene chloride, biphenyl/water and hiphenyl/perchloroethylene. The dyeing behaviors of the pretreated fibers with C.I. Disperse Red 4 in water were studied with reference to changes in the matter properties of fiber. Also density and X-ray diffraction of the fibers were investigated as measure of crystalline region. The results obtained are briefly discussed in terms of the plasticization of the fiber structure and penetraing biphenyl volume formed during the pretreatment and pretreated time and temperature. The results are as follows; 1) The crystalline growth of PET fiber treated with 5% biphenyl/methylene chloride was also greater than that treated with other solutions, and this tendency was increase with volume of added biphenyl. 2) Equilibrium dye absorption and initial rate of dyeing of PET fiber treated with 5% biphenyl/methylene chloride were greater than those of sample with other solution. 3) The diffusion and dye affinity of PET fiber treated with 5% biphenyl/methylene chloride were greater than those of sample with other solution. I think that dyeing method of energy conservation of pretreated PET fiber is dyeing PET fiber pretreated with 5% hiphenyl/methylene chloride.

The rheological properties of $\alpha$-and ${\gamma}$-keratoses prepared from Merino wool by oxidation with performic acid were examined by using the cone and plate rheometer. Steady shear rate viscosity, dynamic viscosity, and dynamic storage modulus have been measured for keratose solution containing 7.5-20.0g/dl keratose in aqueous soidum tetraborate buffer solution. Measurements were carried out over a shear rate range of 0.75-600 sec-1 to obtain steady rate viscosity, and dynamic properties were measured by oscillatory shear over a frequency range of 0.006-2.2rad/sec. Significant difference in rheological properties between two fractions of oxidized wool was found. $\alpha$-keratose solution showed the non-Newtonian behavior, whereas ${\gamma}$-keratose solution revealed nearly the Newtonian behavior below the critical concentration(Cc) of 12.5g/dl at which ${\gamma}$-keratose seemed to start to form an aggregate. It was also found that zero shear rate viscosity was markedly dependent on the concentration of both the fractions, suggesting the presence of strong interaction between the molecules in solution, with the 8th and 11th powers of concentration above Cc for $\alpha$-and ${\gamma}$-keratose solutions, respectively. These were closely considered in connection with wool structure.