| Alkali lignin is the main by-product in paper industry in China, direct emission of such product will cause serious environmental pollution and result in a great waste of resources. As alkali lignin is aromatic renewable resource, its development and utilization can not only reduce environmental pollution, but also alleviate the crisis of resources to maintain sustainable development. Firstly, this study adopt alkali lignin as raw material and introduce hydrophilic and lipophilic functional groups into lignin moleculars to modify surfactant with different structures. Secondly, using two kinds of lignin-based surfactant as template to prepare porous titanium materials. This study is part of the national forestry industry public project named lignin derivation reaction and efficient utilizations technology (200904072) Primary contents are as follows:Aiming at resolving the problem of poor polydispersity and thermal stability on lignin molecules, the raw lignin materials need processes of purification and classification. And thus lower the polydispersity and abtain three fraction based on pH value 7～9,6～7 and 4～6. applied the high performance gel permeation chromatography to determine that lignin molecular polydispersity of each fraction decreased orderly.Firstly, the fraction of lignin with the low polydispersity and homogeneous relative molecular weights was adopted to sythesis diethanolamine based lignin nonionic surfactant (DLNS).the analysis of FTIR and the determination of N content confirmed the introduction of diethanolamine into the lignin moleculars; the results of surface tensions proved that surface activity was improved obviously through the chemical modify, surface tensions of same concentration of lignin and DLNS solution is decreased from 57.177mN/m to 46.373 mN/m; determination of turbidity and solubility showed that the product in the medium with relative low pH still maintain certain dissolve ability, non-ionic enhanced, hydrophobicity increased,, dissolubility decreased slightly in the alkaline solution,,but inhanced in organic solvent, broaden the range of dissolubility; the last, combined the DLNS and sodium dodecylbenzene sulfonate(SDS).The system get a good dissolubility and a low turbidity at the ration of V(SDS):V(DLNS)=20:3-20:20. Thus, it inticate that DLNS could be composite with SDS in a wide range and be utilized in the form of composite.Secondly, a kind of lignin surfactant with Bola structure was designed, through the Mannich and sulfonation reaction with pH=6-7 ligin fraction as raw materials to systhsis dimethyl-butyl-sulfonated lignin chloride with quaternary ammonium and sulfonic group. The result of structure and property determination show that surface activity and dissolubility were improved obviously, N content is 1.66% and S content is 0.006g/g; the data of surface tention was decreased with the inceased concentration, also, the surface tention of product was lower than the lignin with same concentration. The analysis of DSC proved that the enhanced intermolecular force caused by the introduced positive and negative charge; integrated the analysis of FTIR,NMR, conductivity and isoelectric point determination, it could be confirmed that the product process typical amphoteric compound with Bola structure.And next, the sythesis dimethyl-acetoxy-(2-carboxymethyl ether)-lignin chloride, a kind of amphoteric surfactant with betaine structure, was carried on with lignin fraction pH=6-7. By using FTIR, NMR,functional group determination to prove the amphoteric chemical structure; by using DSC,surface tention and conductivity and isoelectric point to determinate physical property, the study result shows that the N content is 2.89%, carboxyl content improved from 0.585mmol/g to 1.219mmol/g; surfacr activity improved:dimethyl-acetoxy-(2-carboxymethyl ether)-lignin chloride has a lower surface tention than lignin with identical concentration(1%), it also has cmc concentration at 0.0795g/100mL; intermolecular force was enhanced because the introduced positive and negative charge and thus results in increasing polarity and a better dissolubility; isoelectric point at 3.58 could infer that the product processes typical amphoteric compound structure.Lastly, adopt dimethyl-butyl-sulfonated lignin chloride and dimethyl-acetoxy-(2-carboxymethyl ether)-lignin chloride as template to prepare porous titanium materials with the method of sol-gel and calcinations. Through the determination of XRD, FTIR,BET, the final product was analysised in the aspect of crystal form, pore size distribution and surface area. The result shows that(1) dimethyl-butyl-sulfonated lignin chloride and dimethyl-acetoxy-(2-carboxymethyl ether)-lignin chloride moleculars could have such inter action with titanium sol particle through electric charge matching between the interfaces,then assemble polymeric structure, after the calcinations porous would appear on the titanium materials.(2) complexing agent complexing agent could complex with titanium butoxide,such agent could change the hydrolysis rate, inhibit the process of hydrolysis.(3) the ration of template and titanium butoxide has effect on specific surface area:as the increase of template, surface area variation curve appears peak value, increased continuously the template, specific surface area decreased; the tempreture also has effect on specific surface area, as the tempture reach 450℃,the specific surface area variation curve appears peak value; the analysis of XRD shows that pore wall of porous titanium materials is;(4) dimethyl-acetoxy-(2-carboxymethyl ether)-lignin chloride with bataine structure has better effect than dimethyl-butyl-sulfonated lignin chloride with Bola structure in the aspect of template to prepare porous titanium materials.
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