Relations between molecular, crystalline, and lamellar structures of amylopectin

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dc.contributor.authorWitt, Ten_AU
dc.contributor.authorDoutch, Jen_AU
dc.contributor.authorGilbert, EPen_AU
dc.contributor.authorGilbert, RGen_AU
dc.date.accessioned2014-03-07T01:11:20Zen_AU
dc.date.available2014-03-07T01:11:20Zen_AU
dc.date.issued2012-12-01en_AU
dc.date.statistics2014-03-07en_AU
dc.description.abstractChain (branch) length distributions (CLD) from size-exclusion chromatography of a series of waxy starches were parametrized using both an empirical and a biosynthesis-based method and correlated with their crystalline amorphous lamellar properties obtained from X-ray scattering. Correlations were best seen with the biosynthesis-based parametrization. This showed for the first time that the following links between the CLD and lamellar parameters, the average interlamellar repeat distance and the distribution of these distances, were decreased by an increase in the proportion of very short branches and were increased by an increase in the proportion of intermediate and longer chains; further, the shoulder and linear sections of the CLD were found to affect the lamellar repeat distance and distribution. These effects are rationalized in terms of branch-length effects on the production of crystallites and :he presence of portions of longer branches in the amorphous regions. © 2012 The American Physical Societyen_AU
dc.identifier.citationWitt, T., Doutch, J., Gilbert, E. P., & Gilbert, R. G. Relations between molecular, crystalline, and lamellar structures of amylopectin. Biomacromolecules, 13(12), 4273-4282. doi:10.1021/bm301586xen_AU
dc.identifier.govdoc4757en_AU
dc.identifier.issn1525-7797en_AU
dc.identifier.issue12en_AU
dc.identifier.journaltitleBiomacromoleculesen_AU
dc.identifier.pagination4273-4282en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/bm301586xen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5245en_AU
dc.identifier.volume13en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectAnionsen_AU
dc.subjectChromatographyen_AU
dc.subjectSmall angle scatteringen_AU
dc.subjectStarchen_AU
dc.subjectWheaten_AU
dc.subjectBiosynthesisen_AU
dc.titleRelations between molecular, crystalline, and lamellar structures of amylopectinen_AU
dc.typeJournal Articleen_AU
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