海藻酸钠/PDMS互穿聚合物网络体系的制备及其对提高纸张阻隔性能的研究

项目名称： 海藻酸钠/PDMS互穿聚合物网络体系的制备及其对提高纸张阻隔性能的研究

项目编号： No.21506105

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 有机化学

项目作者： 宋兆萍

作者单位： 齐鲁工业大学

项目金额： 21万元

中文摘要： 由纤维素纤维为原材料抄造而成的纸张具有亲水性、多孔性结构, 对液体有良好渗透性，难以满足高阻隔性包装材料的需求。提高阻隔性能的传统处理方法存在能耗过高、难降解及对人与环境不安全等局限性。因此，发展新型可降解、对环境友好并赋予纸张抗水抗油等阻隔性能的食品包装材料十分必要。.本研究拟以可降解天然产物海藻酸钠和羟基封端的聚二甲基硅氧烷PDMS为主要材料，制备互穿网络聚合物体系SA-PDMS并将其作用于纸张表面。通过对SA-PDMS制备方法、影响因素和结构的研究，制备出稳定的互穿网络聚合物体系。将SA-PDMS作用于纸张表面，通过对SA-PDMS膜表面抵抗水滴油滴的能力和SA-PDMS处理后纸张的水蒸气透过率（WVTR）、油脂渗透率等的研究，验证SA-PDMS对植物纤维材料的阻隔性能。利用染色油脂在纸张涂层表面的铺展渗透以及在涂层内部、纸张内部纤维间的渗透等方式研究SA-PDMS涂层的抗水抗油机制

中文关键词： 互穿网路聚合物体系；海藻酸钠；聚二甲基硅氧烷；抗水抗油；纸张

英文摘要： Paper products made of cellulose fibers are widely used in packaging industry. Paper is a porous and hydrophilic medium. As the result, paper can hardly meet the demand of high barrier properties of the packaging materials which are especially for water and oil repellent properties. It is necessary to develop new biodegradable and multi-functional products with high barrier properties because the conventional treatments have limitations including the high energy consuming, low efficiency, non-biodegradable and unhealthy for people and the environments, etc. .Interpenetrating polymer networks (IPNS) including biodegradable sodium alginate and hydroxyl-terminated polydimethylsiloxane (PDMS) are prepared and applied in the surface treatment of paper to enhance the barrier properties of paper products in this application. The preparation techniques, stability and the influencing factors of IPNS, as well as the effects of the water and oil barrier properties of the paper with IPNS treatment will be investigated. In detail, the arrangement of SA-PDMS system on the paper surface, the water or oil resistant efficiency, water vapor transmission rate and oil penetration will be discussed in this work. Moreover, the LCSM will be used to characterize the spreading and penetration of the dyed oil on the surface and inside of the treated paper, in order to investigate the mechanisms for the barrier effects on SA-PDMS treated paper products. In the long run, it is hoped that this work could provide clues for the further study on developing new paper-based environmentally-friendly packaging materials.

英文关键词： Interpenetrating Polymer Networks;Sodium Alginate;Polydimethylsiloxane;Water and Oil Resistance;Paper