CAJ | 학술논문

用X射线衍射方法研究了天然彩棉、白棉和染色棉的结晶度和取向度,结果表明:天然彩棉的结晶度和取向度明显小于染色棉,但与白棉的差异并不明显,且天然彩棉和白棉的结晶度和取向度因产地不同而有所差异,无规律可寻.在研究取向状态时,发现天然绿色棉呈现两个特征:一是(040)晶面的衍射峰显著低于(200)晶面;二是(002)晶面衍射的强度分布与天然棕色棉、白棉和染色棉明显不同.这两个特征可用于鉴别天然绿色棉的真伪.
용X사선연사방법연구료천연채면、백면화염색면적결정도화취향도,결과표명:천연채면적결정도화취향도명현소우염색면,단여백면적차이병불명현,차천연채면화백면적결정도화취향도인산지불동이유소차이,무규률가심.재연구취향상태시,발현천연록색면정현량개특정:일시(040)정면적연사봉현저저우(200)정면;이시(002)정면연사적강도분포여천연종색면、백면화염색면명현불동.저량개특정가용우감별천연록색면적진위.
The crystallinity and degree of orientation of naturally colored cottons and white cotton as well as dyed cotton were studied by using X-ray diffraction method. Results showed that the crystallinity and degree of orientation of naturally colored cottons were obviously smaller than that of dyed cotton, but it had a little difference with white cotton. Besides, there were differences between crystallinity and degree of orientation for naturally colored cottons and white cotton owing to the different production areas, but there were no definite rules. When the preferred orientation state was studied, there were two characteristics presented by naturally green cotton: one was that the diffraction peak of (040) reflection was obviously lower than that of (200), the other was that the distribution of intensity for (002) reflections was obviously different with that of naturally brown cotton, white cotton and dyed cotton. Therefore these two characteristics can be used for distinguishing true or false naturally colored cottons .