微晶纤维素（MCC）可作为PU合成革湿法生产中优良的微孔剂和增稠剂使用,并能赋予合成革良好的手感和弹性,但国内外生产合成革用MCC多以棉浆粕和木浆粕为原料,资源少,成本高。以漂白麦草浆为原料,通过化学处理、生物酶处理和机械处理等工艺过程制备出了麦草MCC。重点探讨了酸处理工艺条件与产品性能的关系,并优化确定了最佳酸处理工艺。并利用SEM、XRD、TGA等手段分别对麦草MCC的微观形貌、结晶结构和热稳定性等性能进行了表征。研究结果表明,麦草MCC性能指标达到《合成革用微晶纤维素》行业标准要求,可以替代目前棉浆粕和木浆粕为原料生产的PU合成革用MCC产品。
Microcrystalline cellulose（MCC） applied as an excellent micropore and thickening agents in wet-process production of PU and PVC synthetic leather could give comfortable feeling and good elasticity to them.However,cotton pulp and wood pulp resources commonly used to produce MCC for synthetic leather are very limited.The study was undertaken to obtain MCC from bleaching wheat straw pulp by means of chemical treatment,enzyme treatment and mechanical treatment.This paper emphased on the effect of conditions of acid hydrolysis on performance of MCC,and the optimization of process parameters.Morphology,particle size,crystallinity and thermostability of MCC were characterized by scanning electron microscopy,X-ray diffraction,TGA spectrograph.It is suggested that MCC from wheat straw pulp could meet the requirements of synthetic leather industry standards for MCC,and replace the current PU synthetic leather MCC products based on cotton and wood pulp.
参考文献
| [1] | 中国塑料加工工业协会人造革合成革专业委员会.聚氨酯（PU）合成革助剂产业的现状及发展[J].国外塑料,2009(12):36-40. |
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