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当前位置: 首页 > 文章 > 油茶果壳超微粉体特性的研究 南方林业科学 2017 (4) 52-54
Position: Home > Articles > Study on characteristics of superfine powder from Camellia oleifera shell South China Forestry Science 2017 (4) 52-54

油茶果壳超微粉体特性的研究

作  者：
贺磊;谢阳志;刘斌;董云丹;孙丰文
单  位：
江西省林业科学院;南京林业大学
关键词：
油茶果壳;超微粉碎;扫描电镜;红外光谱
摘  要：
以木质素含量较高的油茶果壳为研究对象,通过超微粉碎至300~500目,采用扫描电镜、傅里叶红外光谱仪和pH计分析其粉体特性,结果表明:油茶果壳被粉碎到500目时,扫描电镜放大400倍,其呈现颗粒状,容易在木材胶粘剂中分散,放大1 500倍,可看到油茶果壳粉有较多孔隙,比表面积变大,吸附能力强;分析傅里叶红外光谱图,在3 450 cm~(-1)处有O-H伸缩振动峰、1 680 cm~(-1)处有C=O伸缩振动峰和1 100 cm~(-1)处有C-O伸缩振动峰显著增强,证明油茶果壳在粉碎过程中,一些较弱的化学键被破坏,更多的活性官能团显现出来,可吸收木材胶粘剂中的游离甲醛;油茶果壳粉呈酸性,用作木材胶粘剂改性剂,可能会促进脲醛树脂固化,但在一定程度上影响酚醛树脂固化。
译  名：
Study on characteristics of superfine powder from Camellia oleifera shell
作  者：
He Lei;Xie Yangzhi;Liu Bin;Dong Yundan;Sun Fengwen;Jiangxi Academy of Forestry;Nanjing Forestry University;
关键词：
Camellia oleifera shell;;superfine grinding;;SEM;;FTIR
摘  要：
Camellia oleifera shell with high lignin content was studied. Scanning electron microscope(SEM), Fourier infrared spectrometer(FTIR) and pH measurer were taken to analyze its characteristics after grinding to 300 ~500 mesh. The results were as follows: C. oleifera shell powder which was granular under SEM at the magnification of 400 could be easily dispersed in wood adhesive. While at the magnification of 1 500, C. oleifera shell powder with high specific surface area and adsorption capacity was porous. In the FTIR spectrum, the peaks of 3 450 cm~(-1), 1 680 cm~(-1), and 1 100 cm~(-1)were attributed to O-H, C=O, and C-O vibrational absorption bands respectively, indicating that weak chemical bonds were destroyed and active functional groups which could absorb free formaldehyde in wood adhesive happened during the grinding process. C. oleifera shell powder presented acidic, when using as wood adhesive modifier, it may accelerate the urea formaldehyde resin curing and affect the phenolic resin curing.

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