Characterization of non-covalently functionalized halloysite
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Characterization of Minerals, Metals, and Materials. TMS
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The inorganic nanotube halloysite (HNT) is a promising type of natural occurring filler for polymers. Its characteristics, such as high aspect ratio (10–50), small size, and high strength (elastic modulus—140 GPa) suggest that HNTs have a potential use in high-performance polymer nanocomposites. Compared to other nanoclays and nanosilica the relatively low content of hydroxyl groups on their surfaces makes HNTs relatively hydrophobic, although, sometimes, this is not sufficient for guaranty a good interfacial adhesion in composite systems. Further hydrophobic treatment is required to improve HNTs compatibility with polymer matrixes, maximizing interfacial interactions. In the present study, different percentages of EPB (2,2-(1,2-ethene diyldi-4,1-phenylene) bisbenzoxazole) was used to perform a non-covalent functionalization of halloysite, based on electron transfer interactions. The functionalization is characterized by specific surface area (BET), thermogravimetric analysis (TG) and water/toluene extraction experiment.
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FRANCISCO, DANAE L.; PAIVA, LUCILENE B. de; ALDEIA, WAGNER; LUGAO, ADEMAR B.; MOURA, ESPERIDIANA A.B. Characterization of non-covalently functionalized halloysite. In: LI, BOWEN (ed.); LI, JIAN (ed.); IKHMAYIES, SHADIA (ed.); ZHANG, MINGMING (ed.); KALAY, YUNUS E. (ed.); CARPENTER, JOHN S. (ed.); HWANG, JIANN-YANG (ed.); MONTEIRO, SERGIO N. (ed.); FIRRAO, DONATO (ed.); BROWN, ANDREW (ed.); BAI, CHENGUANG (ed.); PENG, ZHIWEI (ed.); ESCOBEDO-DIAZ, JUAN P. (ed.); GOSWAMI, RAMASIS (ed.); KIM, JEONGGUK (ed.). Characterization of Minerals, Metals, and Materials. TMS. Cham, CZ, Switzerland: Springer International Publishing AG, 2018. p. 317-323. (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-319-72484-3_34. Disponível em: http://repositorio.ipen.br/handle/123456789/28878. Acesso em: 20 Mar 2026.
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