Morphology and crystallization of polypropylene/microfibrillated cellulose composites

dc.bibliographicCitation.firstPage23eng
dc.bibliographicCitation.journalTitleKMUTNB International Journal of Applied Science and Technologyeng
dc.bibliographicCitation.lastPage34eng
dc.bibliographicCitation.volume7
dc.contributor.authorThanomchat, Sarit
dc.contributor.authorSrikulkit, Kawee
dc.contributor.authorSuksut, Buncha
dc.contributor.authorSchlarb, Alois Karl
dc.date.accessioned2016-03-24T17:37:00Z
dc.date.available2019-06-26T17:03:12Z
dc.date.issued2014
dc.description.abstractMicrofibrillated cellulose (MFC) was prepared by controlling the re-precipitation of cellulose prepared in the mixture form of NaOH/Urea solubilized microcrystalline cellulose (MCC) and starch. The cellulose re-precipitation was carried-out in an HCl bath, resulting in a MFC form having relatively lower crystallinity than MCC. The XRD pattern of MFC indicated the partially crystalline structure arising from the imperfect orientation of a cellulose chain obstructed by a starch molecule in the precipitation step. Interestingly, the MFC morphology exhibited a web-like structure with a diameter in the range of 10-20 nm. The water retention value of MFC was extraordinarily high due to its extremely small diameter having high surface area. Further, surface silanization of MFC with organosilane was carried out. Then, the modified MFC was melt-mixed with polypropylene (PP) matrix via a simple melt mixing technique. The morphology and crystallization of the PP/MFC composites were measured. The morphology of organosilane treated MFC exhibited agglomeration of 10 microns in diameter with layered structures arising from the packing of microfibrils. The FTIR spectra showed hydrophobic characteristics of treated MFC observed by the disappearance of original cellulose hydroxyl group and bound water. The crystallinity of treated MFC increased when compared to the untreated MFC, indicating that cellulose chains of unmodified MFC underwent re-orientation occurring in the modification step due to its high crystallinity characteristic. For the PP/MFC-composite containing MFC loading, faster crystallization and higher spherulite growth rate, in case of higher MFC loading, were observed. In addition, the spherulite size decreased with an increase in the crystallization temperature. However, the degree of crystallinity was fairly independent on the MFC-loading. Therefore it can be concluded that the addition of MFC might enable shorter cycle times, resulting in cheaper processing cost in a view point of polymer processing.eng
dc.description.versionpublishedVersioneng
dc.formatapplication/pdf
dc.identifier.urihttps://doi.org/10.34657/555
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/173
dc.language.isoengeng
dc.publisherBangkok : King Mongkut’s University of Technologyeng
dc.relation.doihttps://doi.org/10.14416/j.ijast.2014.09.002
dc.rights.licenseCC BY-NC-SA 3.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/3.0/eng
dc.subject.ddc540eng
dc.subject.otherCompositeseng
dc.subject.otherMicrofibrillated celluloseeng
dc.subject.otherMorphologyeng
dc.subject.otherCrystallizationeng
dc.titleMorphology and crystallization of polypropylene/microfibrillated cellulose compositeseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorINMeng
wgl.subjectChemieeng
wgl.typeZeitschriftenartikeleng
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