Tao CHEN, Sheng-du YANG, Liang-liang LI, Yao-zhu TIAN. Preparation and Properties Research of PLLA/SiO2 Super-hydrophobic Materials[J]. Polymer Bulletin, 2020,33(7):53-59.
Based on the KH570 chemical grafting and SA physical coating method of combining the modified nano silica (SiO
2
) effectively
get a hydrophobic effect and can effectively dispersed nano filler in the polymer matrix
polylactic acid (PLLA) as polymer matrix
passed the non-solvent induced phase separation method preparation of super-hydrophobic PLLA/SiO
2
composite films
the apparent contact Angle from pure PLLA 120° to 153°. The study also found that the crystallization properties of the matrix were different with the different filler contents. With the increase of the modified nano-SiO
2
filler contents
the crystallinity of the film increased from 9.8% to 17.19%. The crystallinity plays an important role in the construction of rough structure on the surface of materials.