REGENERATED CELLULOSE HAVING HIGH MOISTURE-ABSORBING AND RELEASING PROPERTY, AND PYROGENICITY AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To obtain a regenerated cellulose capable of exhibiting durable high moisture-absorbing and releasing property, and pyrogenicity. SOLUTION: This cellulose is obtained by compounding a regenerated cellulose fiber with organic high moisture-absorbing releasing particles having an average particle diameter of 5μm or less in an amount of 0.1-30 wt.% to the weight of fiber. The fiber has high moisture-absorbing and releasing property, and pyrogenicity and satisfies the following relational expressions.ΔH=H1-H0>=1 (%) H1: The water content difference (%) of fiber in the case where high moisture-absorbing and releasing organic particles are contained. H0: The water content difference (%) of fiber in the case where high moisture- absorbing and releasing organic particles are not contained. Water content difference (%)=RH(95)-RH(20) RH(95): water content (%) of fiber at 20 deg.C and 95% RH. RH(20): water content (%) of fiber at 20 deg.C and 20% RH.