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采用离子液体溶解纤维素浆粕、免烫整理剂1,2,3,4-丁烷四羧酸（BTCA）及催化剂次亚磷酸钠（SHP）制备纺丝液，湿法纺丝，弱酸凝固浴中再生，经预烘、焙烘制备交联再生纤维素纤维，红外光谱测试结果证明了BTCA交联再生纤维素纤维制备成功；探讨了影响交联纤维折痕回复性能、湿强及湿模量的因素，得到BTCA交联再生纤维素纤维制备的最佳工艺条件，交联后纤维干湿折痕回复角较原再生纤维素纤维分别提高了76.4%与41.1%，且耐水洗性优良。“,”The cellulose pulp, durable press finishing agent BTCA and catalytic agent SHP was dissolved in ionic liquid. The as-spun fiber was prepared by wet spinning method. The cross-linked regenerated cellulose fiber was prepared after the as-spun fiber was precured and then cured. The cross-linked regenerated cellulose fiber was proved to be successfully prepared by FT-IR tests. The influence factors of wrinkle recovery property, wet strength and wet modulus of the fiber were investigated. The optimum conditions of the cross-linked fiber were obtained. The dry and wet crease recovery angle of cross-linked fiber was improved by 76.4% and 41.4%, separately. Furthermore, the washing durability of the cross-linked fiber was excellent.