木质素基环氧丙烯酸酯的合成及紫外光固化

Synthesis of Lignin Based Epoxy Acrylate and Its UV-curing Research

木质素是地球上一种储量十分丰富的可再生资源,可生物降解[1,2].木质素结构中含有大量羟基,主要以酚羟基和醇羟基形式存在,可与许多化合物发生化学反应制得木质素基环保材料,是最有前途的生物质资源之一[3].但工业木质素纯度较低,对其利用多为直接混合,如水泥减水剂等低端领域.环氧丙烯酸酯（EA）作为紫外光固化的预聚体,在紫外光照射下可快速固化,其黏接性高,耐化学药品性能优异,应用广泛[4,5].因此降低EA的成本,对其进行改性是近年来该领域的研究热点[6].

Lignin was used as a monomer to synthesize the lignin based epoxy acrylates prepolymer（ LBEA）with epoxy and acrylic acid. The obtained LBEA was UV cured into membrane to explore its application as paintings. The reaction process was studied by the epoxy index and acid number depending on the lignin ratio.Infrared spectroscopy（ IR） proved that the LBEA was synthesized successfully. The performance of LBEA membrane,such as hardness,flexibility and acid and base resistance was characterized,and was better than that of epoxy acrylate.