Intercalation of modified zanthoxylum bungeanum maxin seed oil/ stearate in layered double hydroxide: Toward flame retardant nanocomposites

Bin Lyu; Yue-Feng Wang; Dang-Ge Gao; Jian-Zhong Ma; Yun Li

doi:10.1016/j.jenvman.2019.03.001

Intercalation of modified zanthoxylum bungeanum maxin seed oil/ stearate in layered double hydroxide: Toward flame retardant nanocomposites

J Environ Manage. 2019 May 15:238:235-242. doi: 10.1016/j.jenvman.2019.03.001. Epub 2019 Mar 7.

Authors

Bin Lyu¹, Yue-Feng Wang², Dang-Ge Gao², Jian-Zhong Ma³, Yun Li⁴

Affiliations

¹ College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China; Key Laboratory of Leather Cleaner Production, China National Light Industry, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, PR China. Electronic address: xianyanglvbin@163.com.
² College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China.
³ College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China; Key Laboratory of Leather Cleaner Production, China National Light Industry, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, 710021, PR China. Electronic address: majz@sust.edu.cn.
⁴ College of Chemistry and Chemical Engineering, Shandong, Yantai, 264005, China.

PMID: 30852399
DOI: 10.1016/j.jenvman.2019.03.001

Abstract

Zanthoxylum bungeanum Maxim Seed Oil (ZBMSO) is widely distributed in most parts of China, which cannot be edible and extensively consumed due to its high free fatty acids. This paper reports a rational route to utilization of ZBMSO in preparation of nanocomposites which can enhance leather flame retardancy and thermal stability. ZBMSO was synthesized through three-stage process, decoloration, acid reduction and sulfitation to prepare the modified ZBMSO fatliquoring agent (MZBMSO). Then nanocomposites based on MZBMSO and stearate-layered double hydroxide (s-LDH) were prepared via in-situ method. XRD and TEM results indicated that the MZBMSO intercalate into the galleries of s-LDH with uniform dispersion. Compared with MZBMSO, the leather treated by MZBMSO/s-LDH had a remarkable improvement on flame retardancy and superior softness which limiting oxygen index (LOI) increased from 23.6% to 28.0% and smoke density index decreased from 25 to 6.

Keywords: Flame retardant; Layered double hydroxide; Thermal stability; Zanthoxylum bungeanum maxin seed oil.

MeSH terms

China
Flame Retardants*
Hydroxides
Nanocomposites*
Stearates
Zanthoxylum*

Substances

Flame Retardants
Hydroxides
Stearates