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　　選擇廢棄棉纖維和粘膠纖維兩種紡織纖維作為水熱炭化原料,并以微晶纖維素為模型底物進行對比,研究原料結(jié)構(gòu)對水熱炭化條件及產(chǎn)物的影響。結(jié)果表明,高結(jié)晶度的棉纖維（60.35%）和微晶纖維素（60.24%）制備炭微球的最佳條件分別是330℃,6 h,0.15%CuSO₄和310℃,6 h,0.10%CuSO₄,而低結(jié)晶度（34.31%）的粘膠纖維的最佳條件為260℃,8 h。結(jié)晶度越低,水熱炭化條件越溫和,而聚合度對其影響不顯著。采用SEM、XRD、FTIR、TG和EDS對炭化產(chǎn)物進行表征,結(jié)果表明,不同原料合成的炭微球具有類似的無定型結(jié)構(gòu)和豐富的官能團,但棉纖維和微晶纖維素合成的炭微球具有更高的碳含量和熱穩(wěn)定性,這可能是更高的水熱炭化溫度所致。因此,纖維素結(jié)晶度是影響其水熱炭化合成炭微球的重要因素。 

【文章來源】：新型炭材料. 2020,35(03)北大核心EISCICSCD

【文章頁數(shù)】：9 頁

【文章目錄】：
1 Introduction
2 M aterials and methods
    2.1 Materials
    2.2 Hydrothermal carbonization
    2.3 Characterization of carbon microspheres
    2.4 Determination of crystalline structure and de-gree of polymerization
3 Results and discussion
    3.1 The measurement of crystallinity and poly-merization of cellulosic materials
    3.2 Hydrothermal carbonization of cotton fibers,viscose fibers and Avicel
    3.3 Structural comparison of carbonized prod-ucts from cotton fibers,Avicel and viscose fibers
    3.4 The relationship between HTC conditions and structure of cellulosic materials
    3.5 Mechanism analysis of hydrothermal carboni-zation of cellulosic materials
4 Conclusion



本文編號：3389925