The morphological changes upon cryomilling of cellulose and concurrent generation of mechanoradicals

Simple item page
buir.contributor.authorLaçin, Özge
buir.contributor.authorKwiczak-Yiğitbaşı, Joanna
buir.contributor.authorErkan, Meltem
buir.contributor.authorBaytekin, Bilge
dc.citation.epage108945-9en_US
dc.citation.spage108945-1en_US
dc.citation.volumeNumber168en_US
dc.contributor.authorLaçin, Özgeen_US
dc.contributor.authorKwiczak-Yiğitbaşı, Joannaen_US
dc.contributor.authorErkan, Meltemen_US
dc.contributor.authorCevher, Ş. C.en_US
dc.contributor.authorBaytekin, Bilgeen_US
dc.date.accessioned2020-02-06T10:50:26Z
dc.date.available2020-02-06T10:50:26Z
dc.date.issued2019
dc.departmentDepartment of Chemistryen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractWith mechanical input, chemical bonds in polymers can be broken. Recently, it was shown that reactive ends formed by homolytic cleavage, so-called mechanoradicals, can be used in driving further chemical reactions or in making new composite materials. Cellulose, the most abundant polymer on earth, can also be subjected to mechanical input via ball-milling to produce mechanoradicals. Despite many reports on morphological changes in cellulose upon milling, there is only a limited understanding on how these changes affect the mechanoradical production, i.e., in which domains of cellulose the bonds are broken to produce the mechanoradicals. Here we show, the effect of the initial morphology of cellulose (cotton or microcrystalline cellulose) and the mode of grinding (dry or solvent-assisted) on the amount of generated cellulose mechanoradicals. The morphological and the chemical changes taking place upon milling of cellulose are monitored by SEM, XRD, and ATR, and the number of mechanoradicals is determined by a first-time quantitative analysis of cellulose mechanoradicals using radical scavenger DPPH. Our findings can help in efficient mechanofunctionalization of cellulose and to make useful mechanochemical reactions of cellulose using mechanoradicals, which stand as a promising economic and environment-friendly alternative to the conventional solvent-assisted chemistry of cellulose.en_US
dc.embargo.release2021-10-01
dc.identifier.doi10.1016/j.polymdegradstab.2019.108945en_US
dc.identifier.issn0141-3910
dc.identifier.urihttp://hdl.handle.net/11693/53134
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://doi.org/10.1016/j.polymdegradstab.2019.108945en_US
dc.source.titlePolymer Degradation and Stabilityen_US
dc.subjectMechanoradicalsen_US
dc.subjectCelluloseen_US
dc.subjectBall-millingen_US
dc.subjectCryomillingen_US
dc.subjectMechanochemistryen_US
dc.titleThe morphological changes upon cryomilling of cellulose and concurrent generation of mechanoradicalsen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
The_morphological_changes_upon_cryomilling_of_cellulose_and_concurrent_generation_of_mechanoradicals.pdf
Size:
1.22 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Department of Chemistry
Institute of Materials Science and Nanotechnology (UNAM)