The mechanical properties of CFRTPs made with polyetherimide (CFRTP-PEI) and polyethersulfone (CFRTP-PES) and the interfacial shear strength between CF and each polymer (CF/PES and CF/PEI) have been investigated. The relationships between measured parameters have been also discussed. The modulus and strength of both CFRTP achieved over 85% and 80% of theoretical values calculated from the rule of mixtures, respectively. For this reason, it is thought that the interfacial adhesion of CF/PES and CF/PEI effectively works for mechanical properties. The modulus of both CFRTPs and the strength of CFRTP-PEI showed almost constant below 150 ̊C. On the other hand, the modulus of both CFRTP markedly decreased above 150 ̊C and the strength of CFRTP-PEI began to decrease above 100 ̊C. The modulus of CFRTP-PES at 100 ̊C became 70 % of that at 25 ̊C. The interfacial shear strength of CF/PES and CF/PEI didnʼt decrease but the mechanical properties of each polymer obviously decreased below 100 ̊C. These results suggest that the thermal stability of CFRTPs is influenced not by interfacial adhesion but by the mechanical properties of matrix resins.

The atmospheric pressure plasma (APP) jet was applied to the surface treatment of natural fibers, cotton, wool and silk. From the SEM observation, the wool and silk fibers were found to be slightly damaged after the APP treatment. X-ray photoelectron spectroscopic results showed that the oxygen concentration on the fiber surfaces increased by the APP treatment, especially for wool. Little change in mechanical properties of the fabrics was found, whereas the water wicking into the fabric enhanced after the APP treatment. In the case of the wool fabric, the water wicking remarkably increased and the quick drying did not significantly decrease due to the APP treatment. In the inkjet dyeing of wool fabric with acid dye, the color deepening at the initial stage of dyeing process considerably increased by the APP pre-treatment.

The purpose of this study is to investigate relationship between material property and mixing ratio about blended yarn made from polypropylene(PP) and cotton. Material properties were measured by Kawabata Evaluation Sysytem(KES), Japan industrial Standards(JIS) and BOKEN standards. Hardness of fabric was increased by blending of cotton to PP. Resilience of fabric against mechanical defomation was decreased by blending of cotton to PP. Friction of surface was increased by blending PP to cotton because of cross-section of shape of fiber. Water transport ability and thermal insulation performance of fabric were encouraged by blending PP to cotton. The presence of optimal blending ratio for human has been suggested about fabric made by PP and cotton.