多酚羧酸合成功能高分子材料研究(Ⅱ)——没食子酰化改性纤维素合成及其功能特性试验

Synthesis of Functional Polymer Material with Polyphenolic Acid(Ⅱ)——Synthesis and Functional Test of Galloyl Modified-cellulose

以没食子酰基为功能基团,以改性纤维素为骨架合成功能高分子材料没食子酰化改性纤维素(没食子酰基-1,6-己二亚胺基-羟丙基-纤维素,CG):先将纤维素与环氧氯丙烷反应,然后依次接上己二胺桥链和三乙酰基没食子酰基,最后将没食子酰基脱去乙酰基得到目标产物。功能试验表明,1g产物能结合明胶49.5mg,并可再生使用。1g产物络合金属离子的能力:Fe3+53.4mg,Cu2+38.7mg,Hg2+46.5mg,Mn2+6.8mg,Zn2+27.9mg,Pb2+57.2mg。产物在稀酸、稀碱、稀醇和热水中具有稳定性。

A new type of functional polymer material, galloyl modified-cellulose （galloyl-1,6-hexyldiimino-oxypropyl-cellulose, CG ）, was synthesized with phenolic acid as functional group and modified cellulose as molecular skeleton. The synthesis procedure was as follows： cellulose was first reacted with eplchlorohydrin, then the hexyl diamine bridge chain and triacetyl-galloyl group were successively connected, and finally the galloyl group was deacetylated. Functional tests indicated that 1 g of CG could adsorb 49.5 mg of gelatin and be reusable after regeneration, and complex the metallic ions such as： Fe^3＋ 53.4 mg, Cu^2＋ 38.7 mg, Hg^2＋ 46.5 mg, Mn^2＋ 6.8 nag, Zn^2＋ 27.9 nag, Pb^2＋ 57.2 nag, respectively. The product CG was stable in dilute acidic, alkaline, ethanolic solutions and hot water.