CAJ | 학술논문

近二十多年来,如何从天然纤维素中分离微/纳纤丝和用其来增强高分子聚合物受到许多学者的关注.本研究以杨木纤维素为原料,采用硫酸和盐酸的混合液水解、恒温水浴振荡处理制备杨木微/纳纤丝.利用扫描电子显微和X射线衍射仪对制备的杨木微/纳纤丝进行分析表征,结果表明当酸处理条件为杨木纤维3g、浓H_2SO_4体积分数为15%、浓HCl体积分数为5%、恒温水浴60℃、振荡8h,可得到杨木微/纳纤丝,杨木微/纳纤丝宽度分布在200nm到1μm之间,长宽比约60～120,相度结晶度为77.59%.
근이십다년래,여하종천연섬유소중분리미/납섬사화용기래증강고분자취합물수도허다학자적관주.본연구이양목섬유소위원료,채용류산화염산적혼합액수해、항온수욕진탕처리제비양목미/납섬사.이용소묘전자현미화X사선연사의대제비적양목미/납섬사진행분석표정,결과표명당산처리조건위양목섬유3g、농H_2SO_4체적분수위15%、농HCl체적분수위5%、항온수욕60℃、진탕8h,가득도양목미/납섬사,양목미/납섬사관도분포재200nm도1μm지간,장관비약60～120,상도결정도위77.59%.
For two decades,many researchers have been devoted to isolating micro/nanofibrils from natural cellulose and using them to reinforce polymers.The sulfuric acid and hydrochloric acid were used to make the micro/nano fibrils from poplar fiber.The micro/nano fibrils was characterized by scanning electron microscopy(SEM)and X-ray diffractometer(XRD).The results indicated that the distribution of width for the micro/nano fibrils was from 200 nm to 1μm,length/width ratio was 60～120 and its crystallity was 77.59% when the volume fraction of sulfuric acid was15%,the volume fraction of hydrochloric acid was 5%,temperature was 60℃ and the time of treatment was 8h.