CAJ | 학술논문

将水性聚氨酯(WPUR)与聚乙烯醇(PVAL)按照不同质量比制备质量分数为8%的纺丝溶液，通过静电纺丝制备WPUR／PVAL复合纳米纤维。运用扫描电子显微镜、傅立叶变换红外光谱仪和X射线衍射仪对WPUR与PVAL质量比不同的纺丝溶液制备的复合纳米纤维的微观形貌和结构进行分析。实验结果表明，PVAL的含量对复合纳米纤维的形成和形貌起着决定性的作用，随着溶液中PVAL含量的增加，纺丝过程中纺丝液逐渐从不连续复合纳米纤维转变为连续均匀的复合纳米纤维，纤维直径逐渐增大，当纺丝液中WPUR与PVAL的质量比为30∶70时，得到的复合纳米纤维形貌最佳，其平均直径为330.8 nm，具有最小标准差，为22 nm，同时随着纺丝溶液中PVAL含量的增加，所得复合纳米纤维的结晶性能增强。
장수성취안지(WPUR)여취을희순(PVAL)안조불동질량비제비질량분수위8%적방사용액，통과정전방사제비WPUR／PVAL복합납미섬유。운용소묘전자현미경、부립협변환홍외광보의화X사선연사의대WPUR여PVAL질량비불동적방사용액제비적복합납미섬유적미관형모화결구진행분석。실험결과표명，PVAL적함량대복합납미섬유적형성화형모기착결정성적작용，수착용액중PVAL함량적증가，방사과정중방사액축점종불련속복합납미섬유전변위련속균균적복합납미섬유，섬유직경축점증대，당방사액중WPUR여PVAL적질량비위30∶70시，득도적복합납미섬유형모최가，기평균직경위330.8 nm，구유최소표준차，위22 nm，동시수착방사용액중PVAL함량적증가，소득복합납미섬유적결정성능증강。
A series of electrospinning solutions were prepared by mixing waterborne polyurethane (WPUR) aqueous solution/poly(vinyl alcohol)(PVAL) aqueous solution according to different mass ratio,and the total mass fraction of WPUR and PVAL in each electrospinning solution is 8%. WPUR/PVAL composite nanofibers were prepared by electrospinning process. The morphologies and structures of the composite nanofibers with different contents of PVAL were analyzed by scanning electron microscopy and X-ray diffractometer . The results show that content of PVAL play a decisive role in formation and morphologies of the composite nanofibers. With PVAL content increasing, the electrospinning solution gradually transform from discontinuous nanofibers into continuous and uniform nanofibers, and the average diameter of the fiber increase gradually. The morphologies of the composite nanofibers is the best when the mass ratio of WPUR and PVAL is 70∶30,the average diameter of the composite nanofibers is 330.8 nm and the smallest standard deviation is 22 nm,and the crystallinity of the composite nanofibers increase because of improvement of PVAL content.