Prihandana Gunawan Setia, Sriani Tutik, Muthi'ah Aisyah Dewi, Machmudah Affiani, Mahardika Muslim, Miki Norihisa
Department of Industrial Engineering, Faculty of Advanced Technology and Multidiscipline, Universitas Airlangga, Jl. Dr. Ir. H. Soekarno, Surabaya 60115, Indonesia.
Department of Research and Development, PT. Global Meditek Utama, Sardonoharjo, Ngaglik, Sleman, Yogyakarta 55581, Indonesia.
Nanomaterials (Basel). 2022 Jan 25;12(3):388. doi: 10.3390/nano12030388.
Polysulfone ultrafiltration membranes were fabricated using various sizes (20, 40, and 90-210 nm) of silver nanoparticles (nAg) blended in a dope solution. To characterize the performance and properties of the prepared membranes, scanning electron microscopy (SEM), water contact angle, protein separation, water flux, and antibacterial tests were conducted. The characterization results revealed that when nAg particles (20 nm) were blended into the base polymer PSF, the PSF/nAg blended membrane had the lowest contact angle (58.5°) and surface energy (110.7 mN/m). When experimenting with ultrafiltration using protein solutions, bare PSF and PSF/nAg-20 blended membranes gave similar values of protein rejection: 93% of bovine serum albumin (BSA) and 70% of lysozyme rejection. Furthermore, SEM studies showed that the surface pore size was reduced by adding 20 nm nAg particles in the casting solution. Most importantly, the introduction of 40 nm nAg particles reduced the growth of bacterial colonies on the membrane surface by up to 72%. These findings revealed that nAg particles are expected to be a potential modifier for the fabrication of an ultrafiltration membrane.
采用在铸膜液中混入不同尺寸（20、40和90 - 210纳米）的银纳米颗粒（nAg）的方法制备了聚砜超滤膜。为了表征所制备膜的性能和特性，进行了扫描电子显微镜（SEM）、水接触角、蛋白质分离、水通量和抗菌测试。表征结果显示，当将20纳米的nAg颗粒混入基础聚合物聚砜（PSF）中时，PSF/nAg混合膜具有最低的接触角（58.5°）和表面能（110.7毫牛/米）。在用蛋白质溶液进行超滤实验时，纯聚砜膜和PSF/nAg - 20混合膜的蛋白质截留率相似：牛血清白蛋白（BSA）截留率为93%，溶菌酶截留率为70%。此外，扫描电子显微镜研究表明，在铸膜液中加入20纳米的nAg颗粒会使表面孔径减小。最重要的是，引入40纳米的nAg颗粒可使膜表面细菌菌落的生长减少多达72%。这些发现表明，nAg颗粒有望成为制备超滤膜的潜在改性剂。
