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Open AccessArticle

Preparation and Properties of sc-PLA/PMMA Transparent Nanofiber Air Filter

1
State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China
2
School of Textile, Tianjin Polytechnic University, Tianjin 300387, China
3
School of Science, Tianjin Polytechnic University, Tianjin 300387, China
*
Author to whom correspondence should be addressed.
Polymers 2018, 10(9), 996; https://doi.org/10.3390/polym10090996
Received: 19 August 2018 / Revised: 4 September 2018 / Accepted: 4 September 2018 / Published: 6 September 2018
(This article belongs to the Special Issue Polymer for Separation)
Particulate matter (PM) pollution is a serious concern for the environment and public health. To protect indoor air quality, nanofiber filters have been used to coat window screens due to their high PM removal efficiency, transparency and low air resistance. However, these materials have poor mechanical property. In this study, electrostatic induction-assisted solution blowing was used to fabricate polylactide stereocomplex (sc-PLA), which served as reinforcement to enhance the physical cross-linking point to significantly restrict poly(methyl methacrylate) (PMMA) molecular chain motion and improve the mechanical properties of sc-PLA/PMMA nanofibers. Moreover, the introduction of sc-PLA led to the formation of thick/thin composite nanofiber structure, which is beneficial for the mechanical property. Thus, sc-PLA/PMMA air filters of ~83% transparency with 99.5% PM2.5 removal and 140% increase in mechanical properties were achieved when 5 wt % sc-PLA was added to PMMA. Hence, the addition of sc-PLA to transparent filters can effectively improve their performance. View Full-Text
Keywords: air filtration; PM2.5; nanofibers; optical properties; mechanical properties; solution blowing air filtration; PM2.5; nanofibers; optical properties; mechanical properties; solution blowing
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MDPI and ACS Style

Lv, S.; Zhao, X.; Shi, L.; Zhang, G.; Wang, S.; Kang, W.; Zhuang, X. Preparation and Properties of sc-PLA/PMMA Transparent Nanofiber Air Filter. Polymers 2018, 10, 996.

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