| 초록 |
The Hydrolyzed, crosslinked PAN (hc-PAN) particles can be used as moisture absorption-heat release materials for fibers. However, it is difficult to obtain homo PAN particles with uniform and small sizes due to the strongly polarized nitrile groups. In this study, MMA, easily polymerized to uniform and small particles, was used as a comonomer to produce P(AN-co-MMA) particles. KPS and SDS were used as an initiator and emulsifier, respectively. Various sizes of P(AN-co-MMA) particles less than 100 nm were prepared by varying MMA feed ratio. Crosslinking with hydrazine and alkaline hydrolysis of the particles gave hydrophilic and non-water soluble products of hc-P(AN-co-MMA). The hc-P(AN-co-MMA) particles exhibited very high moisture regain of up to 48%. When the particles were added to water, the temperature increase was measured up to 12.9°C. Compared to hc-PAN, the hc-P(AN-co-MMA) particles showed much higher moisture regain and better heat release property with moisture absorption. |
