Interface nanoengineering of a core-shell structured biobased fire retardant for fire-retarding polylactide with enhanced toughness and UV protection

Yu, Yueming and Zhang, Yan and Xi, Liangdong and Zhao, Zhinuo and Huo, Siqi and Huang, Guobo and Fang, Zhengping and Song, Pingan ORCID: https://orcid.org/0000-0003-1082-652X (2022) Interface nanoengineering of a core-shell structured biobased fire retardant for fire-retarding polylactide with enhanced toughness and UV protection. Journal of Cleaner Production, 336:130372. pp. 1-11. ISSN 0959-6526


Abstract

In this work, we found a very effective method to adjust the polarity of the fillers to promote its good dispersion in matrix by using an organic-solvent-free assembling strategy. With the coating of polyethylenimine-decorated graphene oxide (GO-PEI), the as-prepared biobased core-shell graphene oxide hybrid (BCSGOH) can distribute more homogeneously in the polylactide (PLA) matrix, compared with the bio-derived core-shell flame retardant (CSFR) with higher polarity. The polarity analysis of BCSGOH, CSFR and PLA indicated that the polarity of BCSGOH had a better match with that of PLA, and the interfacial tension (0.8 mN/m) between BCSGOH and PLA was much lower than that (12.0 mN/m) between CSFR and PLA. Consequently, the better flame retardancy, impact toughness and UV-shielding properties of PLA/BCSGOH composites were achieved. 6 wt% of BCSGOH endowed PLA with the best comprehensive properties, such as the UL94 V-0 rating, the limiting oxygen index (LOI) of 30.0%, and notched impact strength of 12.38 kJ/m2. Hence, this work offers a conducive, facile and green strategy to create high-performance fire-safe bioplastics.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 24 Mar 2022 02:21
Last Modified: 26 Mar 2022 05:55
Uncontrolled Keywords: Dispersion; Flame retardancy; Graphene oxide; Polylactide; Toughness
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 > 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.jclepro.2022.130372
URI: http://eprints.usq.edu.au/id/eprint/47387

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