Miura Sayaka, Yamagishi Rio, Ando Mano, Teramae Arisa, Hachikubo Yuna, Yokoyama Yoshiyuki, Takei Satoshi
Department of Pharmaceutical Engineering, Toyama Prefectural University, Imizu 939-0398, Toyama, Japan.
Toyama Industrial Technology Research and Development Center, Takaoka 933-0981, Toyama, Japan.
Gels. 2024 Jul 11;10(7):453. doi: 10.3390/gels10070453.
Cationic gas-permeable molds fabricated via sol-gel polymerization undergo cationic polymerization using epoxide, resulting in gas permeability owing to their cross-linked structures. By applying this cationic gas-permeable mold to nano-injection molding, which is used for the mass production of resins, nano-protrusion structures with a height of approximately 300 nm and a pitch of approximately 400 nm were produced. The molding defects caused by gas entrapment in the air and cavities when using conventional gas-impermeable metal molds were improved, and the cationic gas-permeable mold could be continuously fabricated for 3000 shots under non-vacuum conditions. The results of the mechanical evaluations showed improved thermal stability and Martens hardness, which is expected to lead to the advanced production of resin nano-structures. Furthermore, the surface roughness of the nano-protrusion structures fabricated using injection molding improved the water contact angle by approximately 46°, contributing to the development of various hydrophobic materials in the future.
通过溶胶-凝胶聚合制备的阳离子透气模具利用环氧化物进行阳离子聚合，由于其交联结构而具有透气性。通过将这种阳离子透气模具应用于用于树脂大规模生产的纳米注塑成型，制备出了高度约为300nm、间距约为400nm的纳米凸起结构。使用传统的不透气金属模具时因空气和型腔中截留气体而导致的成型缺陷得到了改善，并且阳离子透气模具在非真空条件下可以连续制造3000次注塑。力学评估结果表明热稳定性和马氏硬度得到了提高，这有望推动树脂纳米结构的先进生产。此外，使用注塑成型制造的纳米凸起结构的表面粗糙度使水接触角提高了约46°，有助于未来各种疏水材料的开发。
