喷墨印花用高固色率高光牢度色素分子的设计合成及构性关系研究

In view of the problems of low fixation and unsatisfactory lightfastness of reactive dyes, and the requirement for moisture-retention property of the ink in ink-jet printing of cellulosic fibers, a kind of function composite colors with high fixation, high lightfastness and moisture-retention property are designed to be controllably synthesized by first modifying the structures of chromophores, fiber reactive groups, light stabilizers, moisturizing molecules, then introducing the modified molecules to polyethylene polyamine by utilizing the multiple reactive sites and the reactivity difference between primary and secondary amino groups within polyethylene polyamine.The relationship between the structures and properties of the colors will also be studied. The designed structures of the target color molecules are more beneficial for enhancing the interaction and fixation with the fibers and playing the role of light stabilization in the ink-jet printing. Through regulation of the structural design and synthesis conditions, the correlation between the structural modification and reactivity of chromophores, light stabilizers and moisturizing and solubilizing molecules will be determined. And the influence of introduction manner, the conditions, the order, the proportion of chromophores to the functional groups on the performance of the colors will be studied.Through study of the relations between structures and properties,the mechanism of synergistic effect of the functional groups, it will be revealed the role of the composite action including covalent bonding and supramolecular interactions, and that of hydrophilicity and hydrophobicity of the functional groups in the ink-jet printing of the colors for improving the color strength and fastness property. Through research,not only the function composite and excellent ink-jet printing effect will be realized, the ideas for designing novel colors used in ink-jet printing will also be provided.

针对纤维素纤维喷墨印花用活性染料固色率低，光牢度不理想的问题和墨水配方对保湿性的要求，设计将发色体、固色反应基团、光稳定剂、保湿分子经结构修饰，引入多乙烯多胺中，利用多乙烯多胺多反应位点和其结构中伯、仲氨基反应活性的差异，可控合成一类具有高固色率、高光牢度、可保湿的功能复合色素分子,并研究其构性关系。目标色素分子结构设计利于其在喷墨印花中增强与纤维间的作用力、固着和光稳定剂功能基作用发挥。通过结构设计和合成条件调控，明确发色体、光稳定剂和保湿分子结构修饰与其反应能力的相关性，研究发色体和各功能基引入方式、条件、顺序、比例等对目标色素分子性能的影响；通过构性关系研究，揭示各功能基协同作用机理、共价键合与超分子作用的多点复合及亲疏水性在色素分子喷墨印花中作用，以提高色素着色力和色牢度。项目研究不仅要实现功能复合和优异的喷墨印花效果，更要为新型喷墨印花用色素分子的结构设计提供思路。

本项目基于目前纤维素纤维数码喷墨印花用活性染料光牢度不理想、固色率低等问题, 设计、可控合成基于光稳定剂和高光牢度中间体，具有良好溶解性能适用于纤维素纤维喷墨印花的功能复合染料分子。明确分子骨架结构、发色体、固色基团等对其有效复合和协同作用效果，研究建立染料分子固色的作用机理。在此研究基础上，设计通过含吸电子基团的功能化合物引入纤维素纤维，实现在喷墨印花中的高固色率和高光稳定性。活性染料利用率达到90%以上，各项色牢度优异，大大降低了活性染料喷墨印花中有色废水的排放，项目研究满足了棉纤维喷墨印花墨水的优良固色率、光牢度和印花品质，也为性能优异喷墨印花墨水的开发、活性染料数码印花的应用丰富理论基础。研究培养博士研究生2名，硕士研究生5名。研究成果在国内外重要学术期刊发表学术论文10篇，其中SCI收录论文6篇，EI收录论文7篇。授权国家发明专利4项，参加国内外重要的学术交流7次。项目研究期间，在新型染料创制和应用方面获2016年国家技术发明二等奖一项（项目负责人排名第三），2015年中国石油与化学工业联合会技术发明一等奖（项目负责人排名第三）。