【摘要】 研究了以乙酸纤维素为原料,丙酮为溶煤,用平面铸膜法制备的乙酸纤维素游离膜的吸湿性的特点.结果表明,游离膜的吸湿量和表观膜厚没有关系,仅与致密层厚度相关;增塑剂可增加膜的吸湿性,不同增塑剂对改善膜的吸湿性影响程度不同.更多还原

【Abstract】 The permeability of cellulose acetate was studied using cellulose acetate as raw material and acetone as solvent.The results showed that the permeation of cellulose acetate free film had no bearing with the thickness of cellulose acetate free film but with the thickness of the close layer.Effect of different dinds of plasticizers on the permeability was different.更多还原