ESPERIDIANA AUGUSTA BARRETOS DE MOURA

Resumo

Graduated in Chemical Engineering at Faculdade Oswaldo Cruz (1983), Master in Nuclear Technology - Applications at IPEN / USP (1999), Ph.D. in Nuclear Technology - Applications at IPEN / USP (2006) and Post-Doctorate at Center for Advanced Materials ( T-CAM) from Tuskegee University, AL, USA. The main lines of research are: Synthesis of metallic nanoparticles; Obtaining and characterization of nanoparticles from mineral activity and agroindustry residues; Micro and nanofiller functionalization; Synthesis and reduction of graphene oxide; Development and modification of composite materials based on conventional and biodegradable polymers with vegetable fibers, micro and nanofillers of renewable origin; Development of biodegradable, active and intelligent plastic packaging for food, cosmetics, medical and pharmaceutical products; Development of conductive polymeric materials; Development of biomaterials for application in the regeneration of bone and dental tissue. (Text obtained from the CurrĆ­culo Lattes on October 8th 2021)


Possui graduaĆ§Ć£o em Engenharia QuĆ­mica pela Faculdade Oswaldo Cruz (1983), mestrado em Tecnologia Nuclear ? AplicaƧƵes pelo IPEN/USP (1999), doutorado em Tecnologia Nuclear ? AplicaƧƵes pelo IPEN/USP (2006) e PĆ³s-Doutorado no Center for Advanced Materials (T-CAM) da Tuskegee University, AL, USA. As principais linhas de pesquisa sĆ£o: SĆ­ntese de nanopartĆ­culas metĆ”licas; ObtenĆ§Ć£o e caracterizaĆ§Ć£o de nanopartĆ­culas a partir de resĆ­duos da atividade mineral e da agroindĆŗstria; FuncionalizaĆ§Ć£o de micro e nanocargas; SĆ­ntese e reduĆ§Ć£o de Ć³xido de grafeno; Desenvolvimento e modificaƧao de materiais compĆ³sitos baseados em polĆ­meros convencionais e biodegradĆ”veis com fibras vegetais, micro e nanocargas de origem renovĆ”vel; Desenvolvimento de embalagens plĆ”sticas biodegradĆ”veis, ativas e inteligentes para alimentos, cosmĆ©ticos, produtos mĆ©dicos e farmacĆŖuticos;Desenvolvimento de materiais polimĆ©ricos condutores; Desenvolvimento de biomateriais para aplicaĆ§Ć£o na regeneraĆ§Ć£o de tecidos Ć³sseos e dentĆ”rios. (Texto extraĆ­do do CurrĆ­culo Lattes em 08 out. 2021)

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  • Artigo IPEN-doc 27595
    Noncovalently functionalized halloysite nanotubes for use in reinforced polymer composites
    2020 - FRANCISCO, DANAE L.; PAIVA, LUCILENE B.; ALDEIA, WAGNER; LUGAO, ADEMAR B.; MOURA, ESPERIDIANA A.B.
    The inorganic halloysite nanotube (HNT) is a promising type of naturally occurring fillers with many important uses in different fields. An HNT has a relatively low content of hydroxyl groups on its surface, which makes it relatively hydrophobic, although this is not always sufficient to guarantee good interfacial adhesion in composite systems. Further surface treatment is required to improve the compatibility of HNTs with polymer matrixes, maximizing interfacial interactions. The aim of the present work was to study a noncovalent functionalization of halloysite with 2,2ā€²-(1,2-ethenediyldi-4,1-phenylene) bisbenzoxazole (EPB), based on electron transfer, for further use of EPB as a coupling agent in polymer/HNT compatibility. A set of characterization techniques were performed to evaluate the chemical and physical properties and evidence the functionalization. The results revealed the surface modification of halloysite upon functionalization. Emphasis was for powder wettability by tensiometry based on Washburn because no studies about halloysite powders using this technique could be found in the literature. The results demonstrate a reduction in the total surface energy of the system, usually accompanied by a reduction in the polar component upon HNT modification.