摘要
为了增加花旗松木质纤维和槿麻芯部和韧皮非木质纤维对铜离子的吸附能力，本文提出采用硝酸对这些纤维进行化学改性，使吸附铜离子能力分别增加５１０％，１１０％和４０％。初步研究认为花旗松纤维具有较高的硝化速度是由于它含有较多的木质素（２６％～３１％），而槿麻芯部纤维和韧皮纤维含木质素仅为１７％～１９％和８％～１０％。而且花旗松纤维的愈创木基木质素含量较高。利用电子能谱定量硝化程度，利用红外光谱和拉曼光谱证实硝基的位置。
Douglas fir (Pseudotsuga menziesii) fiber, kenaf (Hibiscus cannabinus) core and kenaf bast fiber were che￣mically modified with nitric acid to enhance its adsorption capacity which was increased by 510 %, 110 % and 40 %, respectively. It has been speculated from the result that the higher nitration rate of P.menziesii fiber is attributed to: (1) The higher lignin content of P.menziesii fiber (26 %31 %) compared to H.cannabinus core (17 %19 %) and bast fiber (8 %10 %);(2)The high purity of guaiacyl lignin in Douglas fir fiber.\;The degree of nitration was quantified by survey and high resolution ESCA (electron spectroscopy for chemical ana￣lysis), and location of nitration was verified by infrared and Raman spectroscopy.\=
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
1999年第1期1-5,共5页
Chemistry and Industry of Forest Products
关键词
花旗松纤维
吸附剂
槿麻纤维
铜离子
改性
Pseudotsuga menziesii
Hibiscus cannabinus
Chemical modification
Adsorption capacity
