Raw Data for the Elastic Modulus of Sporopollenin

Qu, Zihao; Meredith, J. Carson

Title:

Raw Data for the Elastic Modulus of Sporopollenin

dc.contributor.author	Qu, Zihao
dc.contributor.author	Meredith, J. Carson
dc.contributor.corporatename	Georgia Institute of Technology. School of Chemical and Biomolecular Engineering
dc.date.accessioned	2017-10-27T15:21:27Z
dc.date.available	2017-10-27T15:21:27Z
dc.date.issued	2017-10-27
dc.description	Presented on April 28, 2010 from 11:00am - 01:00pm in room L1255 of the Ford Environmental Science & Technology (ES&T) Building.	en_US
dc.description	This dataset provided the raw data of the elastic modulus of sporopollenin from three pollen species. The raw data is provided for the editor and reviewer in Journal of The Royal Society Interface for peer-review and publication. The raw data were collected from December 2015 to February 2017.	en_US
dc.description.abstract	Sporopollenin, the polymer comprising the exine (outer solid shell) of pollens, is recognized as one of the most chemically- and mechanically-stable naturally-occurring organic substances. The elastic modulus of sporopollenin is of great importance to understanding the adhesion, transport, and protective functions of pollen grains. In addition, this fundamental mechanical property is of significant interest in using pollen exine as materials for drug delivery, reinforcing fillers, sensors, and adhesives. Yet, the literature reports of sporopollenin modulus are very limited. We provide the first report of the elastic modulus of sporopollenin of pollen particles from three plant species: ragweed (Ambrosia artemisiifolia), pecan (Carya illinoinensis) and Kentucky bluegrass (Poa pratensis). Modulus was determined with atomic force microscopy by using direct nanomechanical mapping of the pollen shell surface. The moduli were atypically high for noncrystalline organic biomaterials, with average values of 16 ± 2.5 GPa (ragweed), 9.5 ± 2.3 GPa (pecan) and 16 ± 4.0 GPa (Kentucky bluegrass). The amorphous pollen exine has a modulus exceeding all non-crystalline biomaterials, such as lignin (6.7 GPa) and actin (1.8 GPa). In addition to native pollens, we have investigated the effects of exposure to a common preparative acid-base chemical treatment and elevated humidity on modulus. Acid-base treatment reduced the ragweed modulus by up to 58% and water vapor exposure at 90% relative humidity reduced the modulus by 54% (pecan) and 72% (Kentucky bluegrass).	en_US
dc.description.sponsorship	U.S. Air Force Office for Scientific Research
dc.format.extent	00:00 minutes
dc.identifier.uri	http://hdl.handle.net/1853/58846
dc.language.iso	en_US	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.relation.issupplementto	https://doi.org/10.1098/rsif.2018.0533
dc.subject	Pollen exine	en_US
dc.subject	Sporopollenin	en_US
dc.subject	Elastic modulus	en_US
dc.subject	Nanoindentation	en_US
dc.subject	Mechanical property mapping	en_US
dc.title	Raw Data for the Elastic Modulus of Sporopollenin	en_US
dc.type	Dataset	en_US
dspace.entity.type	Publication
local.contributor.author	Meredith, J. Carson
local.contributor.corporatename	School of Chemical and Biomolecular Engineering
local.contributor.corporatename	College of Engineering
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