狼毒草韧皮纤维与5种藏纸纤维超微结构的对比研究

Comparison of Ultrastructures of Stellera Chamaejasme Bast Fibers and Five Tibetan Paper Fibers

中文关键词:  狼毒草  藏纸  超微结构

Key Words:Stellera chamaejasme  Tibetan paper  ultrastructure

中文摘要:

      利用扫描电镜（SEM）对比分析了狼毒草韧皮纤维和5种市售藏纸纤维的微观形貌特征，并将狼毒草韧皮纤维与棉纤维的转曲结构进行对比。结果表明，狼毒草韧皮纤维的部分纤维呈现出与棉纤维类似的天然转曲现象；狼毒草韧皮纤维为扁平带状结构，表面有不规则凹痕或棱状竖条纹，而棉纤维表面密布百褶状细丝，两种纤维表面存在可分辨的超微结构差异。5种市售藏纸纤维的微观形态随来源不同存在明显差异，且随着纸张等次的不同，同一生产厂家使用的造纸原料也有差别。研究结果为藏纸的纤维结构识别提供了超微形态学判断依据，对正确选取藏纸具有一定的参考意义。

Abstract:

      Scanning electron microscope （SEM） was utilized to investigate the microscopic characteristics of the bast fibers of Stellera chamaejasme and the fibers of five commercial Tibetan papers and the twist structures of Stellera chamaejasme bast fibers and cotton fibers were compared. The results indicated that a portion of bast fibers of Stellera chamaejasme presented natural twists resembling that of cotton fibers； bast fibers had a flat-ribbon structure， its surface exhibited irregular dents or prismatic vertical stripes while the surface of cotton fibers was densely covered with pleated filaments， indicating distinct ultrastructural differences between the bast fibers and cotton fibers. The fibers of 5 commercial available Tibetan papers differed in micro-morphology based on their sources. In addition， the papermaking raw materials used by the same manufacturer were different depending on the paper grades. The research results provided an ultramicro-morphological basis for identifying the fiber structure of Tibetan papers and had a particular reference value for choosing appropriate Tibetan papers.