Development of biodegradable particulate filters incorporating proteinase k in poly(L-lactic acid) by emulsion electrospinning

Name: Itchaya Thinnakom

Organization : Chiang Mai University. Faculty of Science

Name: Jutamas Kongsuk

Organization : Chiang Mai University. Faculty of Science

Name: Thannaphat Jenvoraphot

Organization : Chiang Mai University. Faculty of Science

Name: Donraporn Daranarong

Organization : Chiang Mai University. Faculty of Science

Name: Montira Sriyai

Organization : Chiang Mai University. Faculty of Science

Name: Molloy, Robert

Organization : Chiang Mai University. Faculty of Science

Name: Winita Punyodom

Organization : Chiang Mai University. Faculty of Science

Email : winitacmu@gmail.com

LCSH: Biodegradable plastics

LCSH: Electrospinning

LCSH: Emulsion polymerization

Abstract: In recent years, the COVID-19 pandemic and PM 2.5 pollution have been shown to cause respiratory health problems. Wearing a mask in public is one of the easiest and most effective ways to protect the respiratory system from viruses and PM 2.5 particles. However, the number of disposable face masks used in the world has resulted in a huge quantity of environmental waste since some of the materials used in face masks are non-biodegradable polymers. Therefore, the aim of this study is to fabricate self-biodegradable nanofibrous particulate filters. Poly(L-lactic acid) (PLLA) was the material selected and was blended with synthesized oligomeric lactic acid (QLA) to improve the mechanical properties of the PLLA. The results showed that 25 wt.% OLA reduced the glass transition temperature (Te) of the PLLA from 58 to 49 *C, while tensile testing confrmed that the elasticity of PLLA/OLA blends was better than that of PLLA alone. A typical degradation period for biodegradable polymers is several months under composting conditions. However, an embedded depolymerase can accelerate the decomposition by enzymatic degradation. One of the most interesting enzymes for this purpose is proteinase K (ProK). In this work, ProK was incorporated into the PLLA/OLA blends via emulsion electrospinning to produce nano-sized fibers. FTIR spectra confumed that the ProK was completely incorporated into the PLLA. From the results obtained, filter fibers were successfully obtained showing self-biodegradation. This promoted the PLLA degradation without the need for composting and reducing the amount of wastes that accumulate in the environment.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2023

Modified: 2023-07-10

Issued: 2023-07-10

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BibliograpyCitation : In Mae Fah Luang University. School of Science. The Pure and Applied Chemistry International Conference 2023 (PACCON 2023) (pp.917-921). Chiang Rai : Mae Fah Luang University

eng

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