| Title |
Polymer upcycling of municipal solid cellulosic waste by tandem mechanical pretreatment and maleic acid hydrolysis |
| ID_Doc |
8092 |
| Authors |
Basak, M; Gandy, E; Lucia, LA; Pal, L |
| Title |
Polymer upcycling of municipal solid cellulosic waste by tandem mechanical pretreatment and maleic acid hydrolysis |
| Year |
2023 |
| Published |
Cell Reports Physical Science, 4, 12 |
| DOI |
10.1016/j.xcrp.2023.101689 |
| Abstract |
Significant accumulation of waste biomass in landfills and green-house gas emissions has triggered our current comprehensive approach to depolymerize cellulose-rich waste disposable paper cups (WDPCs) into cellulose nanocrystals (CNCs). This work de-velops a pathway for high-yield, greener, and low-cost CNC produc-tion by alkali and maleic acid hydrolysis of recovered fibers following mechanical separation and recycling of WDPCs. The X-ray diffraction confirms polymorphic transformation of CNCs from cellulose I to cellulose II crystal allomorphs with crystallinity indices ranging from 57 %-64%. Rice-like CNCs with diameters ranging approximately from 5-10 nm and length 45-80 nm are determined by transmission electron microscopy. The obtained CNCs have good thermal stability and suspension properties. The yield of recovered cellulosic fibers from WDPCs is higher than 85% and CNCs is 70%-75%. The isolated CNCs can be used to develop biodegradable films and barrier coating in packaging to replace non-biodegradable petrochemical-plastics, enabling the transition to a circular economy. |
| Author Keywords |
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| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001144154000001 |
| WoS Category |
Chemistry, Multidisciplinary; Energy & Fuels; Materials Science, Multidisciplinary; Physics, Multidisciplinary |
| Research Area |
Chemistry; Energy & Fuels; Materials Science; Physics |
| PDF |
https://doi.org/10.1016/j.xcrp.2023.101689
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