摘要
以竹(Bambusa emeiensis)浆粕为原料,不同含水率的异丙醇和乙醇为反应介质,采用淤浆法制备羧甲基纤维素(CMC),并通过气相色谱法(GC)、傅里叶变换红外光谱法(FTIR)和X-射线衍射法(XRD)对原料和产物的结构和性能进行表征。结果表明,制备CMC的碱化和醚化条件及用量为竹浆粕5 g,30%的氢氧化钠17.5 m L,氯乙酸11.5 g,碱化温度25℃,醚化温度60℃,得到的最佳反应介质是含水率10%的乙醇。在此工艺条件下,CMC的增重率和黏度分别为30%和1 720 m Pa·s。
Bamboo（Bambusa emeiensis）pulp was converted to carboxymethyl cellulose by carboxymethylation using sodium hydroxide and monochloroacetic acid in different moisture contents of isopropyl alcohol and ethanol. The product and bamboo pulp were characterized with gas chromatography（GC）, Fourier transform infrared（FTIR） and X-ray diffraction（XRD）spectra.The results indicated that the preparation conditions were bamboo pulp 5 g,30% sodium hydroxide 17.5 m L,chloroacetic acid11.5 g,basification temperature 25 ℃,etherification temperature 60 ℃,the best organic solvent was ethanol with ten percent of moisture content, and under the optimum conditions,the mass increase and viscosity of CMC were 30% and 1 720 m Pa·s.
出处
《湖北农业科学》
2015年第3期661-664,共4页
Hubei Agricultural Sciences
基金
国家林业局"948"项目(2011-4-09)
