Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Adriana de Campos is active.

Publication


Featured researches published by Adriana de Campos.


Polimeros-ciencia E Tecnologia | 2011

Efeito do tratamento das fibras nas propriedades do biocompósito de amido termoplástico/policaprolactona/sisal

Adriana de Campos; Kelcilene B. R. Teodoro; José Manoel Marconcini; Luiz H. C. Mattoso; Sandra Mara Martins-Franchetti

Sisal fibers treated with four methods, namely washing with water, washing with cyclohexane/ethanol, alkali treatment (NaOH) and bleaching (alkaline peroxide treatment), were incorporated in thermoplastic starch/polycaprolactone 80/20 (TPS/PCL) samples. Morphological, mechanical and thermal properties of TPS/PCL/Sisal biocomposites were analysed. The best results were obtained with the composite using the bleached fiber, which had improved tensile strength and thermal stability. An increased adhesion between the fiber and matrix was also observed with the bleached fiber, with 145% increase in the tensile strength


Carbohydrate Polymers | 2017

Bionanocomposites produced from cassava starch and oil palm mesocarp cellulose nanowhiskers.

Adriana de Campos; Alfredo Rodrigues Sena Neto; Vanessa B. Rodrigues; Bruno R. Luchesi; Francys K.V. Moreira; Ana Carolina Corrêa; Luiz H. C. Mattoso; José Manoel Marconcini

Cassava starch films reinforced with cellulose nanowhiskers from oil palm mesocarp fibers were produced by casting. Nanowhiskers were obtained by sulphuric acid hydrolysis followed by microfluidization and incorporated in starch films at various loadings (1-10wt%). Morphological and mechanical characterizations showed that the reinforcing effect of oil palm cellulose nanowhiskers was significant at loadings of up to 6wt%, which was determined to be the nanowhiskers percolation threshold. Above this content, formation of agglomerates became more significant, causing a decrease in mechanical properties of starch bionanocomposites. Below percolation threshold, such as 2wt%, elongation at break increased by 70%, showing an effective reinforcing effect. Dynamic mechanical analyses revealed filler/matrix interactions through hydrogen bonding in bionanocomposites.


Carbohydrate Polymers | 2018

Curaua and eucalyptus nanofibers films by continuous casting: Mechanical and thermal properties

Pedro Ivo Cunha Claro; Ana Carolina Corrêa; Adriana de Campos; Vanessa Bolzan Rodrigues; Bruno Ribeiro Luchesi; Luiz Eduardo Silva; Luiz H. C. Mattoso; José Manoel Marconcini

A wide variety of new green materials such as curaua leaf fibers (CLFs) has potential applications in nanotechnology. This study aims to investigate the thermomechanical properties and morphological structure of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) films obtained by continuous casting. The CNCs were obtained by acid hydrolysis and CNFs by mechanical shearing from bleached CLFs and eucalyptus pulp. The morphology after continuous casting resulted in oriented nanofibers, and as a consequence there was mechanical anisotropy. CNCs films showed the greatest values of tensile strength (36±4MPa) and the more effective fibrillation provided better mechanical strength of eucalyptus CNFs films than curaua CNFs films. Sulfur groups and mechanical shear degradation affected the stability of CNCs and CNFs films, respectively. Thus, the type of nanostructure, the way they interact to each other, the cellulose source and the process interfere significantly on the properties of the films.


Polimeros-ciencia E Tecnologia | 2016

Biodegradation of additive PHBV/PP-co-PE films buried in soil

Barbara Rani-Borges; Adriano Uemura de Faria; Adriana de Campos; Suely Patricia Costa Gonçalves; Sandra Mara Martins-Franchetti

There is considerable concern about the impact plastic materials have on the environment due to their durability and resistance to degradation. The use of pro-oxidant additives in the polymer films could be a viable way to decrease the harmful effects of these discarded materials. In this study, films of PHBV/PP-co-PE (80/20 w/w) and PHBV/PP-co-PE/add (80/19/1 w/w/w) (with pro-oxidant additive) were employed to verify the influence of the additive on the biodegradation of these films in the soil. These films were obtained by melting the pellets in a press at 180 °C which were buried in soil columns for 3 and 6 months. Some samples were also heated before being buried in soil. The biodegradation is higher for the additive blend buried for 3 months than for the pre-heated blend. After 6 months the blend buried and heated/buried was completely degraded in soil. The effect of the additive, on chain oxidation, is more time-dependant than heat-dependant.


Cellulose | 2013

Obtaining nanofibers from curauá and sugarcane bagasse fibers using enzymatic hydrolysis followed by sonication

Adriana de Campos; Ana Carolina Corrêa; David Cannella; Eliangela de Morais Teixeira; José Manoel Marconcini; Alain Dufresne; Luiz H. C. Mattoso; Anand R. Sanadi


Polymer Degradation and Stability | 2012

The influence of UV-C irradiation on the properties of thermoplastic starch and polycaprolactone biocomposite with sisal bleached fibers

Adriana de Campos; José Manoel Marconcini; Sandra Mara Martins-Franchetti; Luiz H. C. Mattoso


Polimeros-ciencia E Tecnologia | 2011

Whiskers de fibra de sisal obtidos sob diferentes condições de hidrólise ácida: efeito do tempo e da temperatura de extração

Kelcilene B. R. Teodoro; Eliangela de Morais Teixeira; Ana Carolina Corrêa; Adriana de Campos; José Manoel Marconcini; Luiz H. C. Mattoso


Journal of Polymers and The Environment | 2013

TPS/PCL Composite Reinforced with Treated Sisal Fibers: Property, Biodegradation and Water-Absorption

Adriana de Campos; Gustavo Henrique Denzin Tonoli; José Manoel Marconcini; Luiz H. C. Mattoso; Artur P. Klamczynski; Kay S. Gregorski; Delilah F. Wood; Tina G. Williams; Bor-Sen Chiou; Syed H. Imam


Journal of Thermal Analysis and Calorimetry | 2014

Kinetics of thermal degradation applied to biocomposites with TPS, PCL and sisal fibers by non-isothermal procedures

Vitor Brait Carmona; Adriana de Campos; José Manoel Marconcini; Luiz H. C. Mattoso


Polymer Engineering and Science | 2013

Properties of thermoplastic starch and TPS/polycaprolactone blend reinforced with sisal whiskers using extrusion processing

Adriana de Campos; Kelcilene B. R. Teodoro; Eliangela de Morais Teixeira; Ana Carolina Corrêa; José Manoel Marconcini; Delilah F. Wood; Tina G. Williams; L. H. C. Mattoso

Collaboration


Dive into the Adriana de Campos's collaboration.

Top Co-Authors

Avatar

José Manoel Marconcini

Empresa Brasileira de Pesquisa Agropecuária

View shared research outputs
Top Co-Authors

Avatar

Luiz H. C. Mattoso

Empresa Brasileira de Pesquisa Agropecuária

View shared research outputs
Top Co-Authors

Avatar

Ana Carolina Corrêa

Empresa Brasileira de Pesquisa Agropecuária

View shared research outputs
Top Co-Authors

Avatar

Eliangela de Morais Teixeira

Empresa Brasileira de Pesquisa Agropecuária

View shared research outputs
Top Co-Authors

Avatar

Kelcilene B. R. Teodoro

Empresa Brasileira de Pesquisa Agropecuária

View shared research outputs
Top Co-Authors

Avatar

Delilah F. Wood

United States Department of Agriculture

View shared research outputs
Top Co-Authors

Avatar

Alfredo Rodrigues Sena Neto

Empresa Brasileira de Pesquisa Agropecuária

View shared research outputs
Top Co-Authors

Avatar

Amanda S. Giroto

Federal University of São Carlos

View shared research outputs
Top Co-Authors

Avatar

Caue Ribeiro

Empresa Brasileira de Pesquisa Agropecuária

View shared research outputs
Top Co-Authors

Avatar

Elaine I. Pereira

Federal University of São Carlos

View shared research outputs
Researchain Logo
Decentralizing Knowledge