Governing effects of melt viscosity on fire performances of polylactide and its fire-retardant systems

Yu, Yueming and Xi, Liangdong and Yao, Miaohong and Liu, Linghui and Zhang, Yan and Huo, Siqi and Fang, Zhengping and Song, Pingan ORCID: https://orcid.org/0000-0003-1082-652X (2022) Governing effects of melt viscosity on fire performances of polylactide and its fire-retardant systems. iScience, 25 (3):103950. pp. 1-12.

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Abstract

Extreme flammability of polylactide (PLA) has restricted its real-world applications. Traditional research only focuses on developing new effective fire retardants for PLA without considering the effect of melt viscosity on its fire performances. To fill the knowledge gap, a series of PLA matrices of varied melt flow index (MFI) with and without fire retardants are chosen to examine how melt viscosity affects its fire performances. Our results show that the MFI has a governing impact on fire performances of pure PLA and its fire-retardant systems if the samples are placed vertically during fire testing. PLA with higher MFI values achieves higher limiting oxygen index (LOI) values, and a lower loading level of fire retardants is required for PLA to pass a UL-94 V-0 rating. This work unveils the correlation between melt viscosity and their fire performance and offers a practical guidance for creating flame retardant PLA to extend its applications.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Agriculture and Environmental Science (1 Jan 2022 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 28 Mar 2022 00:39
Last Modified: 19 Apr 2022 04:07
Uncontrolled Keywords: Materials science; Polymer chemistry
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401605 Functional materials
40 ENGINEERING > 4016 Materials engineering > 401609 Polymers and plastics
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
Socio-Economic Objectives (2020): 24 MANUFACTURING > 2409 Industrial chemicals and related products > 240910 Plastics
24 MANUFACTURING > 2409 Industrial chemicals and related products > 240904 Fine chemicals
24 MANUFACTURING > 2409 Industrial chemicals and related products > 240902 Bioplastics
Funding Details:
Identification Number or DOI: https://doi.org/10.1016/j.isci.2022.103950
URI: http://eprints.usq.edu.au/id/eprint/47443

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