Fire-resistant, strong and green polymer nanocomposites based on poly(lactic acid) and core-shell nanofibrous flame retardants

Feng, Jiabin and Sun, Yiqi and Song, Pingan and Lei, Weiwei and Wu, Qiang and Liu, Lina and Yu, Youming and Wang, Hao (2017) Fire-resistant, strong and green polymer nanocomposites based on poly(lactic acid) and core-shell nanofibrous flame retardants. ACS Sustainable Chemistry and Engineering, 5 (9). pp. 7894-7904.

Abstract

Despite extraordinary mechanical properties and excellent biodegradability, poly(lactic acid) (PLA) still suffers from a highly inherent flammability, restricting its wide applications in the electric and automobile fields. Although a wide range of flame retardants have been developed to reduce the flammability, so far, they normally compromise the mechanical strength of PLA. Herein, we have demonstrated the fabrication of a novel core−shell nanofibrous flame retardant system, PN-FR@CNF, through in situ chemically grafting the phosphorus−nitrogen-based polymer onto the cellulose nanofiber (CNF) surface. The results show that adding 10 wt % PN-FR@CNF enables PLA to achieve a V-0 flame resistance rating during vertical burning tests and to exhibit a dramatically reduced peak heat release rate in cone calorimetry measurements, indicating a significantly reduced flammability. In addition, the tensile strength of PLA also increases by around 24% (about 72 MPa). This work offers an innovative methodology for the design of the unique integration of extraordinary flame retardancy and mechanical reinforcement into one hierarchical nanostructured additive system for creating advanced green polymeric materials.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials
Date Deposited: 20 Mar 2019 05:16
Last Modified: 05 Apr 2019 00:54
Uncontrolled Keywords: core−shell, nanofibrous, flame retardant, poly(lactic acid) (PLA), mechanical property
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8699 Other Manufacturing > 869999 Manufacturing not elsewhere classified
Identification Number or DOI: 10.1021/acssuschemeng.7b01430
URI: http://eprints.usq.edu.au/id/eprint/35567

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