Thermal, Mechanical and Morphological Properties of Composites Developed from Glycerol and Dicarboxylic Acids Reinforced with Piassava Fiber

Abstract

Vegetable fibers are being widely used as reinforcement in polymer composites. These composites can be applied in several fields, such as automotive, packaging and even construction. The polymer matrix used was synthesized from glycerol with phthalic and terephthalic acids in order to open future perspectives in the use of glycerin generated from the production of purified biodiesel. Composites with 2, 5, 10 wt% untreated and treated piassava fiber were obtained. Thermal, morphological and mechanical properties were evaluated. The tensile stress-strain curve of the polyester synthesized and composites was typical of a ductile material. SEM of the surface of fracture showed that the adhesion between fiber and matrix was enhanced after chemical treatment. However, the fiber content was more efficient than the superficial treatment when incorporated into the matrix. Therefore, the material under study is promising for the industrial marketplace, due to its good compatibility with natural fibers.

Effect of the Glycerol and Lignin Extracted from Piassava Fiber in Cassava and Corn Starch Films

“…Additionally, glycerol improves processing and the flexibility of films 17,18 . This work establishes biotechnological strategies for the use of purified glycerol from biodiesel production with the intention to open future perspectives for plastic industries 8,18,19 . This study aims to evaluate the chemical, mechanical and morphological properties of flexible thermoplastic films of cassava and corn starch, using glycerol and lignin as plasticizers and reinforcement.…”

“…During manufacturing of the fiber, wastes are created and their use is of particular interest due to their good chemical and mechanical properties. Furthermore, the state of Bahia, Brazil, is responsible for 90% of the production of piassava wastes and their use as reinforcement in polymer matrices has already been performed, adding them a new commercial value [7][8] . The study of the fiber fractionation process is of great need, because it enables the use of isolated components from plant fibers in specific applications 9 .…”

Chitosan/Cellulose Nanofibril Nanocomposite and Its Effect on Quality of Coated Strawberries

“…e wide availability, low weight, and cost of natural bers make them a material with considerable applicability in composites [7,8]. Fractionation of the bers and the use of their constituents have been shown to be an important area for research.…”

Influência nas Propriedades de Concretos de Pós Reativos com a Incorporação de Fibras de Aramida

“…A tecnologia do CPR permite construções de estruturas leves, cujos elementos são delgados, tabuleiros para pontes, vigas, colunas, pré-fabricados de túneis ou placas de revestimento de fachada e passarelas. O CPR tem se mostrado, ainda, como uma possibilidade para diversas outras aplicações na construção civil, como: obras hidráulicas e de saneamento, construções para armazenamento de rejeitos radioativos, peças para indústrias mecânicas, ou seja, elementos de concreto que necessitam de elevada resistência mecânica, impermeabilidade e durabilidade (MIRANDA, 2012) [4].…”