A starch/milled-montmorillonite nanocomposite for warp sizing

作者：Gao Ming; Zhu Pu xin^*

来源：Starch, 2012, 64(2): 97-104.

DOI：10.1002/star.201100079

• Ball milling
• Montmorillonite
• Starch
• MMT composites
• Tensile property
• Warp sizing

Na-montmorillonite (Na-MMT) was ball-milled, and a starch/MMT nanocomposite for warp sizing was prepared by solution intercalating technique, with oxidized corn starch (OS) of concentration 6?wt% and the Na-MMT of 5?wt% on the basis of dry OS. Scanning electron microscope and laser particle size analyzer were used to investigate the particle morphology and size distribution of the MMT. The interlamellar spacing of the MMT and crystal structure the OS-based composite film were analyzed by using XRD. The sizing performances of the nanocomposite were also tested. All of the experiments conducted, together with those of the OS alone and OS/unmilled MMT for comparison. The results revealed that the ball-milling treatment resulted in a smaller partical size with a narrow distribution, and larger interlamellar spacing of the Na-MMT. In comparison with the pristine clay, the milled MMT restrained the crystallization of OS to a greater extent as composited into the OS, had more decrease effects on apparent viscosity of OS paste and hygroscopicity of the casting films, and had more improvement effects on the tensile properties of OS films and adhesiveness of sizes to fibers.

• 出版日期2012-2
• 单位四川大学