Abstract:

In order to enhance the adhesion properties of starch size, quaternary ammonium cationesterified dodecenylsuccinic anhydride-etherified starch was prepared. The chemical structure was characterized by infrared spectrometer. The adhesion properties, the surface tension and the Zeta potential of its slurry were studied. The results show when the total degree of substitution is about 0. 045, with the increase of the mole fraction of ester group to total substituents, its adhesion force to fibers firstly increases and then decreases, the surface tension of its slurry firstly decreases and then increases, and the Zeta potential of its slurry decreases from positive to negative. When the mole fraction of ester group to total substituents is 60%, the adhesion force to cotton fibers and polyester fibers reaches the maximum value of 75. 32 N and 126. 83 N, respectively. When the mole fraction of ester group to total substituents is about 60%, with the increase of the total degree of substitution, it can significantly enhance the adhesion to polyester fibers and cotton fibers, and the surface tension of its slurry gradually decreases, but when the total degree of substitution is greater than 0. 045, the adhesion properties are no longer enhanced significantly.

Key words: etherified by quaternary ammonium cation, esterified by dodecenylsuccinic anhydride, starch size, adhesion property, degree of substitution