【作者】 庞燕；

【导师】 吴宗华；

【作者基本信息】 福建师范大学 ， 高分子化学与物理， 2008， 硕士

【摘要】 为了高值化利用木麻黄废弃物中的活性物质,本文研究了木麻黄中活性物质的提取及其对金属离子的吸附性能,阻垢性能及自由基消除性能。研究结果表明,pH值为7时木麻黄提取液的胶体滴定值与单宁质量的线性关系良好,胶体滴定法可用于木麻黄废弃物单宁含量的快速测定。木麻黄不同部位的单宁含量差别大,树皮中单宁含量随着树龄的增加而增加。凝胶渗透色谱-激光散射联用仪测定提取物的结果显示提取液的组成对木麻黄提取物的得率和组分影响大。醛的交联作用可使单宁分子在木麻黄树皮内原位固化,原位固化木麻黄树皮对Cr(Ⅵ)和Fe(Ⅲ)有良好的吸附能力,有望开发成高容量低成本的金属离子吸附剂。木麻黄树皮提取物的磺化和氧化产物对碳酸钙具有一定的分散和阻垢能力。木麻黄提取物具有强的消除氢氧自由基的能力,对漂白机械浆的光致黄化有较大抑制能力。更多还原

【Abstract】 In order to make high utilization of the active compound in Casuarina equisetifolia residues, the paper investigated its extract、its metal ions’ adsorption properties、scale inhibiting properties and elimination function of scavenging radical effects. The results showed that values of colloidal titration of the extracts were related linearly with tannin contents at pH 7. Colloidal titration was a quick method usd to Casuarina equisetifolia residues. Different regional tannin contents vary and the tannin in the bark increased with increase of tree ages. GPC-laser light scattering was used to measure the molecular weight distribution, the result disclosed that the composition of Casuarina equisetifolia extract has great effect on yields and constituents of Casuarina equisetifolia extract. The in-situ immobilized Casuarina equisetifolia bark was obtained through cross-linking reaction of aldehyde. The adsorption properties of in-situ immobilized Casuarina equisetifolia bark were researched. The results were that the adsobent has good adsorption capacity to Cr（VI） and Fe（III）.It is expected to be used as high capacity and low cost metalion adsorbent. The extract treated by sulfonation or oxidation have certain scattering and scale inhibiting properties to CaCO₃. The scavenging·OH free radical effects of active compound in Casuarina equisetifolia bark was researched, and it has comparatively large inhibiting capacity to light-induced yellowing properties of mechanical pulp bleached.更多还原