Effect of Fiber Properties on Water Vapor Barrier Performance of Paper
In this study,paper with different physicochemical properties were prepared by using different types of pulp fibers with different degrees of pulping treatment and silane modification to regulate the three-dimensional structure of paper.From the viewpoint of the effects of fiber physical properties and chemical hydrophobic modifications on paper structure,the effects of fiber properties(beating degree,fi-ber length and distribution,water retention value,fiber morphology and hydrophilic/hydrophobic property)on the water vapor barrier per-formance of paper were investigated.The results showed that the water vapor barrier performance of the paper was influenced by the beat-ing degree and hydrophilic/hydrophobic of the fibers.Under the testing conditions of(23±0.5)℃ and(50±1)％RH,the water vapor trans-mission rate of the paper with a basis weight of 60 g/m2 was reduced from 954.5 to 93.77 g/(m2·d),when the beating degree of the un-bleached pine pulp was increased from 13.5 to 90 °SR.The water vapor transmission rate of the paper prepared by hydrophobic modified fiber was reduced by 11.6％compared with that of unmodified fiber when the test conditions were(23±0.5)℃ and(75±1)％RH.The wa-ter vapor transmission rate of paper was influenced by the mixing proportion of hydrophobic modified fiber.
万方数据
维普
