Pyrolysis behaviour and kinetic analysis of waste polylactic acid composite reinforced with reed straw processing residue

Bo Chen; Sen Ma; Sachin Kumar; Zhitong Yao; Wanqi Feng; Jianbo Zhao; Xu Zhang; Di Cai; Hui Cao; Ian Watson

Carbon Resources Conversion (Sep 2024)

Pyrolysis behaviour and kinetic analysis of waste polylactic acid composite reinforced with reed straw processing residue

Bo Chen,
Sen Ma,
Sachin Kumar,
Zhitong Yao,
Wanqi Feng,
Jianbo Zhao,
Xu Zhang,
Di Cai,
Hui Cao,
Ian Watson

Affiliations

Bo Chen: Systems, Power and Energy Research Division, James Watts School of Engineering, College of Science and Engineering, James Watt South, University of Glasgow, Glasgow G128QQ, United Kingdom
Sen Ma: College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China; College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361102, PR China
Sachin Kumar: Department of Energy Engineering, Centre of Excellence-Green and Efficient Energy Technology (CoE-GEET), Central University of Jharkhand, Ranchi 835205, India
Zhitong Yao: College of Materials Science and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
Wanqi Feng: College of Chemistry and Chemical Engineering, Tarim University, Alar, Xinjiang 843300, PR China
Jianbo Zhao: College of Chemistry and Chemical Engineering, Tarim University, Alar, Xinjiang 843300, PR China; National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China
Xu Zhang: College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China
Di Cai: National Energy R&D Center for Biorefinery, Beijing University of Chemical Technology, Beijing 100029, PR China; Corresponding authors.
Hui Cao: College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China; Corresponding authors.
Ian Watson: Systems, Power and Energy Research Division, James Watts School of Engineering, College of Science and Engineering, James Watt South, University of Glasgow, Glasgow G128QQ, United Kingdom

Journal volume & issue: Vol. 7, no. 3
p. 100226

Abstract

Read online

The lignocellulose reinforced composites are commonly used sustainable materials with good mechanical and physical properties. Aiming to properly dispose and recover the potential value of discarded lignocellulose reinforced composites, the pyrolysis behaviour and kinetics of reed straw processing residual/polylactic acid (RSPR/PLA) composites, a typical 3D printing material, was investigated. Based on the TG-FTIR results, the synergistic effects between RSPR and PLA during the pyrolysis process were clarified. Compared with the FTIR spectra of PLA, the absorption peaks of CO and CO2 disappear in the FTIR spectra of RSPR/PLA composite, which indicates RSPR provides additional free radicals for the free radical reaction of PLA, and further promoting the decomposition. The apparent activation energy of the RSPR/PLA composite pyrolysis was calculated by two iso-conversional methods including Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS). The average Ea of the RSPR/PLA composite (122.6 kJ mol−1 (FWO) and 117.9 kJ mol−1 (KAS)) was lower than that of solo pyrolysis of RSPR (138.5 kJ mol−1 (FWO) and 135.4 kJ mol−1 (KAS)) and the pure PLA (197.0 kJ mol−1 (FWO) and 196.6 kJ mol−1 (KAS)). The master plot method results suggested the pyrolysis of RSPR/PLA composite followed the one-dimensional (D1) diffusion model. This work provides an environmentally friendly strategy to effective thermo-chemical upgrading of the value of discarded lignocellulose reinforced composite material.

Published in Carbon Resources Conversion

ISSN: 2588-9133 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Chemical technology
Website: https://www.keaipublishing.com/en/journals/carbon-resources-conversion/

About the journal

Abstract

Keywords