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以离子液体1-烯丙基-3-甲基咪唑氯盐([Amim]Cl)为溶剂,以甘蔗渣纤维素为原料,采用反相悬浮法制备再生纤维素微球,经FT-IR、SEM、XRD、光学显微镜分析再生纤维素微球,通过激光粒度测试,以甘蔗渣再生纤维素微球粒径40~200μm为考察指标,实验表明:在80℃时,转速为600r/min,以4.0%纤维素溶液,6mL司盘80,200mL液体石蜡,制得乳白色、形貌为较规则球形的再生纤维素微球,40~200μm的粒径占全部粒径的64.8%。制备过程无化学反应,纤维素由晶型Ⅰ变为晶型Ⅱ,结晶度由54.58%降到35.21%。
The ionic liquid 1-allyl-3-methylimidazolium chloride ([Amim] Cl) was used as solvent to prepare regenerated cellulose microspheres by using reversed-phase suspension from cellulose bagasse. The regenerated cellulose microspheres were analyzed by SEM, XRD and optical microscopy. The particle size of regenerated cellulose microspheres of 40 ~ 200μm was investigated by laser particle size measurement. The experimental results showed that the rotational speed was 600r / min at 80 ℃ 4.0% cellulose solution, 6 mL Span 80,200 mL liquid paraffin to obtain milky white regenerated cellulose microspheres with regular spherical morphology. The diameter of 40-200 μm was 64.8% of the total particle size. No chemical reaction occurred during the preparation process. The cellulose changed from Form I to Form II, and the crystallinity decreased from 54.58% to 35.21%.