CAJ | 학술논문

甘蔗纤维通过打浆、磨浆及羧甲基化改性处理，采用光学显微镜、扫描电子显微镜和 X 射线衍射等方法研究分析改性前后纤维形态和结晶区变化。研究结果表明：打浆及磨浆处理后的纤维，再经羧甲基改性，可以在纤维保留一定长度的前提下，在纤维微纤丝层间进行较均一低取代度羧甲基改性反应。羧甲基取代度低于0.5时，改性后的纤维基本保持原有的纤维素晶型结构。打浆及磨浆处理使得纤维结构变疏松，羧甲基改性反应在纤维微纤丝层间的进行，使纤维微纤丝层水化、层间结合力削弱，为纤维微纤丝柔性解离、制备分散性能优异的纳米纤维创造了条件。
감자섬유통과타장、마장급최갑기화개성처리，채용광학현미경、소묘전자현미경화 X 사선연사등방법연구분석개성전후섬유형태화결정구변화。연구결과표명：타장급마장처리후적섬유，재경최갑기개성，가이재섬유보류일정장도적전제하，재섬유미섬사층간진행교균일저취대도최갑기개성반응。최갑기취대도저우0.5시，개성후적섬유기본보지원유적섬유소정형결구。타장급마장처리사득섬유결구변소송，최갑기개성반응재섬유미섬사층간적진행，사섬유미섬사층수화、층간결합력삭약，위섬유미섬사유성해리、제비분산성능우이적납미섬유창조료조건。
The sugarcane bagassefiberwastreatedby beating, refining and carboxymethylated modificationin this study, the changes of morphology and crystal structure were investigated by optical microscope, scanning electron microscope(SEM) and X-ray diffraction(XRD). The experimentalresults revealed thatthe carboxymethyl modified reaction between fiber micro fibril layer was homogeneous andin a equably low substitution degree in prerequisites of the preservation offiberlength ofcarboxymethylatedsugarcanebagasse fiber afterpretreatment ofbeating and refining.Whenthecarboxymethyl substitution degree is lower than 0.5, the crystal structure of original fiber can be kept inmodified cellulosefiber. The fiber structure became loose by pretreatment of beating and refining, andthecarboxymethyl modified reactionwas conductedbetween fiber micro fibril layer,which contributed to thehydrationof fiber micro fibril layerand weakentheinterlayer binding force,thus creating possibilitiesfor dissociation offlexible fiber micro fibrilandpreparation of nanofibers with excellentdispersing performance.