Preparation and antibacterial properties of polycaprolactone/quaternized chitosan blends

doi:10.1016/j.cjche.2020.10.001

Abstract

Abstract: This article is a preliminary study on antibacterial blends of polycaprolactone, chitosan and quaternized chitosan by melt processing. Blends were characterized, mechanical test and antibacterial evaluation against Escherichia coli and Staphylococcus aureus, were conducted. Results showed that the antibacterial potential of chitosan was limited in blends and polycaprolactone/chitosan did not show significant antibacterial effect compared with neat polycaprolactone (PCL). Inhibition rates of polycaprolactone/quaternized chitosan were 39.2%-99.9% against Escherichia coli, while inhibition rate was 40.9%-99.9% against Staphylococcus aureus. When quaternized chitosan (QCTS) content was up to 20%, blends exhibited 99.9% inhibition rates against both two types of bacteria.

Key words: Chitosan, Antibacterial properties, Blend, Polymers, Mechanical properties, Quaternized chitosan

摘要： This article is a preliminary study on antibacterial blends of polycaprolactone, chitosan and quaternized chitosan by melt processing. Blends were characterized, mechanical test and antibacterial evaluation against Escherichia coli and Staphylococcus aureus, were conducted. Results showed that the antibacterial potential of chitosan was limited in blends and polycaprolactone/chitosan did not show significant antibacterial effect compared with neat polycaprolactone (PCL). Inhibition rates of polycaprolactone/quaternized chitosan were 39.2%-99.9% against Escherichia coli, while inhibition rate was 40.9%-99.9% against Staphylococcus aureus. When quaternized chitosan (QCTS) content was up to 20%, blends exhibited 99.9% inhibition rates against both two types of bacteria.

关键词: Chitosan, Antibacterial properties, Blend, Polymers, Mechanical properties, Quaternized chitosan

Anrong Zeng, Yangtao Wang, Dajun Li, Juedong Guo, Qiaowen Chen. Preparation and antibacterial properties of polycaprolactone/quaternized chitosan blends[J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 462-471.

Anrong Zeng, Yangtao Wang, Dajun Li, Juedong Guo, Qiaowen Chen. Preparation and antibacterial properties of polycaprolactone/quaternized chitosan blends[J]. 中国化学工程学报, 2021, 32(4): 462-471.

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