改性氨基聚硅氧烷膜与膜形貌及应用

用原子力显微镜(AFM)和接触角测量仪对乙酸酐改性氨基聚硅氧烷的成膜性及膜形态进行了研究。结果发现,氨基聚硅氧烷在单晶硅基底上均能成膜,但不同氨基聚硅氧烷所形成的膜形貌是不同的,膜的表面形貌实际上与基团的排列方式有关,氨乙基氨丙基聚二甲基硅氧烷在单晶硅基底上形成均匀、平整、光滑的疏水膜;而乙酸酐改性的氨乙基氨丙基聚二甲基硅氧烷则形成凹凸不平、粗糙的具有弱亲水性的非均匀膜。     

Film Morphology, Emulsification of Dodecyl/Carboxyl Modified Polysiloxane and Its Application Performance on Cotton Fabrics

The film morphology of dodecyl/carboxyl modified polysiioxane (RCAS) on cotton fabric or the silicon wafer was investigated and characterized by field emission scanning electron microscopy ( FESEM ),atomic force microscope ( AFM ),and Fourier transform infrared spectrometer (FTIR).Experimental results indicate that RCAS is a good film forming material on different substrates.Relatively smooth film was formed on cotton fabric surface,on which the grooves disappeared.In addition,RCAS formed a micromorphology inhomogeneous and unsmooth film on the silicon wafer.Many high or low bright peaks distributed randomly on the film surface,especially as the field was 2μm ×2 μmand the date scale was 5 nm in AFM observation.Then RCAS was emulsified with nonionic surfactant alkyl polyoxyethylene ether in order to achieve a transparent organosilicon emulsion-RCAS emulsion ( RCSE),which possessed good stability.The properties of RCSE and its application performance on cotton fabrics were investigated and characterized by transmission electron microscope (TEM),particle size analysis,and voltage test instrument.The results show that the average particle size of RCAS emulsion is 28.32 nm,while the ζ voltage is - 37.88 mV.Compared with untreatd cotton fabric,the.softness of treated fabric can be improved with RCSE to a certain extent.At the.same time,the fabric treated with RCSE acquires unique fluffy and soft handle.     

聚丙烯酸钠分散剂的制备及应用性能研究

采用溶液聚合法，以水为溶剂、K2S2O8-NaHSO3氧化还原体系为引发剂、NaHSO3为链转移剂，合成了低分子量聚丙烯酸钠，对实验条件进行了优化探索，结果表明：反应温度70℃、单体丙烯酸质量分数为20％～30％、NaHSO3与K2S2O8质量之比为10：1～14：1、反应时间5h，可获得相对分子质量为2000～4000的聚丙烯酸钠．对合成的聚丙烯酸钠在陶瓷铁粉上进行应用试验，当聚丙烯酸钠加入量为0．3％～0．5％时，所得浆料粘度较小，有良好的分散效果．     

丝织物增重整理的研究现状与发展

论文阐述了真丝绸织物增重的必要性,介绍了传统的增重方法及其各自方法的利弊,并对丝素整理剂的环保性能、开发现状及发展趋势进行了分析与探讨。结果表明,丝素整理剂作为真丝绸织物增重剂生态环保性好,具有较好的发展前景和研究意义。