Special Issue "15th Brazilian Polymer Conference (15th CBPol)"

Submission Deadline: 31 July 2020 (closed)
Guest Editors
Antonio José Felix de Carvalho, Professor, Engineering School of São Carlos, São Paulo State University, São Carlos, Brazil;
Antonio Aprigio da Silva Curvelo, Professor, Chemical Institute of São Carlos (IQSC) , University of São Paulo, São Carlos, Brazil;
Daniel Pasquini, Associate Professor, Chemistry Institute, Federal University of Uberlândia, Uberlândia,Brazil;

Summary

This special issue is intend to publish the best works presented in the 15th Brazilian Polymer Conference which is the most important congress in the field in Brazil, receiving approximately 1000 lectures. More information can be taken in the conference home page at: http://www.cbpol.com.br


Keywords
Polymers; Biopolymers; Natural polymers; Giodegradable ploymers; Monomers and composites

Published Papers
  • Chitosan and Carboxymethylchitosan as High Turbidity Water Biocoagulants
  • Abstract Biocoagulants emerges as a promising technology in water treatment, in order to exploit renewable and biodegradable materials. The present work aims to study the coagulant action of chitosan and carboxymethylchitosan on water with very high turbidity (above 300 NTU), contrasting the physicochemical results with those obtained for aluminum sulphate. Carboxymethylchitosan was produced by the Williamson’s ethers synthesis and characterized by potentiometric titration, FTIR and 1 H-NMR. The coagulant tests were performed using synthetic water in a Jar-test equipment, through the induction of high and low velocity gradients, followed by sedimentation. The results showed turbidity and color removal efficiencies above 99%… More
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  • Urethane Modified Hydrophobic Compact Wood Pulp Paper for Oil Spill Cleanup: A Preliminary Study
  • Abstract Oil spills and oil/water wastewater are among the great concerns regarding oil pollution. Existing technologies face many limitations and in some cases are responsible for causing secondary pollution, therefore there is as seek for environmental friendly solutions. Biomass, from which celluloses are highlighted, are being employed for oil/water separation or oil absorbents membranes. Usually, these membranes are obtained by freeze drying of CNF (cellulose nano- fibrils) suspensions followed by chemical modification for hydrophobization, which involves expensive process as chemical vapor deposition and expensive reactants as sylanes, turning these processes hardly scalable. Here, we produced a natural porous structure paper from… More
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  • Utilization of Pineapple Crown Fiber and Recycled Polypropylene for Production of Sustainable Composites
  • Abstract Nowadays, the production of consumer goods is based on the use of non-renewable raw materials, which in recent years has been performing as a problem for the environment. Considering the large number of available biofibers in nature, their use in the development of polymeric composites has inevitably emerged, it is also necessary to take into account the countless discarded plastics that still have the potential to be reused. In this work, fibers were extracted from pineapple crown residues and utilized to compose sustainable composites using recycled polypropylene from cups discarded in the trash as a matrix. However, it is known… More
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  • Study of the Superficial Modification of Sisal Fibres with Lignin, and Its Use As a Reinforcement Agent in Cementitious Composites
  • Abstract The objective of this work was to evaluate different superficial treatments of sisal fibres employing lignin, and their use as a reinforcement agent in cementitious composites. The treatments consisted of superficially impregnating sisal fibres (S) with organosolv lignin (LO), organosolv lignin and glutaraldehyde (LOG), Kraft lignin (LK) and Kraft lignin and glutaraldehyde (LKG). The fibre modifications were verified by FTIR-ATR and SEM analyzes, and the presence of lignin on the surface of the fibres was evidenced, confirming the effectiveness of the treatments. The mechanical, thermal (by TGA) and water absorption properties of the fibres before and after the modifications were… More
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