贵州不同种源山棕纤维结晶度的分析与比较

Comparative Study on Crystallinity of Mountain Palm Fiber from Different Provenances of Guizhou

以贵州省14个不同山棕纤维为研究材料,采用X衍射法测试其结晶度,并对测试数据进一步分析与比较。结果表明,(1)14个种源的山棕纤维XRD波谱曲线线形变化一致,且波谱曲线上均出现两个明显的衍射峰。(2)山棕纤维结晶度与其XRD波谱形成的最大强度衍射峰平均峰高度呈显著正相关。(3)山棕纤维结晶度值在36.43%-38.21%之间,其中,最大值为黔南州福泉市样本,最小值为铜仁市碧江区样本。种源间的变异系数仅为0.014,各种源之间无显著差异。(4)山棕纤维结晶度值大小与种源地的气温和年降水量均呈负相关关系。

The purpose of this paper was to study the crystallinity of mountain palm fibers among 14 different provenances in Guizhou Province. X-ray diffraction method was used to test the crystallinity of the palm fibers,and these test data were further analyzed and compared. The results showed that:( 1) The XRD spectrum curves of different provenances were consistent and presented two obvious diffraction peaks.( 2) The crystallinity showed significantly positive correlation with the mean height of the highest diffraction peaks of the XRD spectrum.( 3)The crystallinity of the mountain palm fibers appeared among 36. 43% -38. 21% . The maximum value was the sample from Fuquan City in south of Guizhou,and the minimum value was the sample from Bijiang District of Tongren City. The coefficient of variation among provenances was not significant,only 0. 014.( 4) The crystallinity of palm fiber showed negative correlation with the air temperature and annual precipitation of provenances.