Poly(lactic acid)/artificially cultured diatom frustules nanofibrous membranes with fast and controllable degradation rates for air filtration

Zhang, Chentao; Sun, Jiaxun; Lyu, Sha; Lu, Zhengyang; Li, Tao; Yang, Ye; Li, Bin; Han, He; Wu, Bangyao; Sun, Haoyang; Li, Dandan; Huang, Jintao; Sun, Dazhi

2022-05-01

10.1007/s42114-022-00474-7

Advanced Composites and Hybrid Materials   影响因子和分区

2522-0128

2522-0136

The worldwide pandemic, coronavirus COVID-19, has been posing a serious threat to the global economy and security in last 2 years. The monthly consumption and subsequent discarding of 129 billion masks (equivalent to 645,000 tons) pose a serious detrimental impact on environmental sustainability. In this study, we report a novel type of nanofibrous membranes (NFMs) with supreme filtration performance and controllable degradation rates, which are mainly composed of polylactic acid (PLA) and artificially cultured diatom frustules (DFs). In this way, the filtration efficiency of particular matter (PM) and the pressure drop were significantly improved in the prepared PLA/DFs NFMs as compared with the neat PLA NFM. In specific, with incorporation of 5% DFs into fibers, PM0.3 removal with a filtration efficiency of over 99% and a pressure drop of 109 Pa were achieved with a membrane thickness of only 0.1 mm. Moreover, the yield strength and crystallinity degree of the PLA/DFsS NFMs were sharply increased from 1.88 Mpa and 26.37% to 2.72 Mpa and 30.02%. Besides those unique characters, the PLA/DFsS presented excellent degradability, accompanied by the degradation of 38% in 0.01 M sodium hydroxide solution after 7 days and approximately 100% in natural condition after 42 days, respectively. Meanwhile, the environmentally friendly raw materials of the composite polylactic acid and artificially cultured diatom frustules could be extracted from corn-derived biomass and artificially cultivated diatoms, ensuring the conformance to carbon neutrality and promising applications in personal protection.

Controllable degradation Nanofibrous membrane PM0.3 removal Artificially cultured diatom frustules Carbon neutrality

SCI ; EI

英语

第一 ; 通讯

Guangdong Provincial Key Laboratory Program[2021B1212040001]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Composites

WOS:000791627200001

SPRINGERNATURE

20221912080301

Crystallinity ; Degradation ; Efficiency ; Microfiltration ; Nanofibers ; Polyesters ; Pressure drop ; Sodium hydroxide ; Sustainable development

Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Organic Polymers:815.1.1 ; Production Engineering:913.1 ; Solid State Physics:933 ; Crystalline Solids:933.1

Web of Science

Southern Univ Sci & Technol, Dept Mat Sci & Engn, Guangdong Prov Key Lab Funct Oxide Mat & Devices, Shenzhen 518055, Peoples R China

Zhang, Chentao,Sun, Jiaxun,Lyu, Sha,et al. Poly(lactic acid)/artificially cultured diatom frustules nanofibrous membranes with fast and controllable degradation rates for air filtration[J]. Advanced Composites and Hybrid Materials,2022,5:1221-1232.

Zhang, Chentao.,Sun, Jiaxun.,Lyu, Sha.,Lu, Zhengyang.,Li, Tao.,...&Sun, Dazhi.(2022).Poly(lactic acid)/artificially cultured diatom frustules nanofibrous membranes with fast and controllable degradation rates for air filtration.Advanced Composites and Hybrid Materials,5,1221-1232.

Zhang, Chentao,et al."Poly(lactic acid)/artificially cultured diatom frustules nanofibrous membranes with fast and controllable degradation rates for air filtration".Advanced Composites and Hybrid Materials 5(2022):1221-1232.