Abstract：
:Biodegradable starch nanocrystals prepared by an acid treatment process were modified through crosslinking modification using citric acid as reactant by a dry reaction method. The occurrence of crosslinking modification was evaluated by Fourier transform infrared spectroscopy and swelling degree. X-ray diffraction, wettability tests and contact angle measurements were used to characterize the modified starch nanocrystals. It was found that the crosslinked starch nanocrystals displayed a higher affinity for low polar solvents such as dichloromethane. The surface of starch nanocrystals became more roughness after crosslinking modification with citric acid and the size decreased as revealed by scanning electron microscopy and dynamic light scattering results. XRD analysis showed that the crystalline structure of starch nanocrystals was basically not changed after the crosslinking modification with shorter heating time. The resulting hydrophobic starch nanocrystals are versatile precursors to the development of nanocomposites.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Zhou J,Tong J,Su X,Ren Ldoi
10.1016/j.ijbiomac.2016.06.082subject
Has Abstractpub_date
2016-10-01 00:00:00pages
1186-93eissn
0141-8130issn
1879-0003pii
S0141-8130(16)30637-7journal_volume
91pub_type
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journal_title：International journal of biological macromolecules
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