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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A new approach to blending starch with natural rubber

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Author(s):
Trovatti, Eliane [1, 2] ; Felix Carvalho, Antonio Jose [1] ; Gandini, Alessandro [2, 1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Escola Engn Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Polymer International; v. 64, n. 5, SI, p. 605-610, MAY 2015.
Web of Science Citations: 11
Abstract

Thermoplastic starch (TPS) is the most widely used renewable and biodegradable polymer in applications such as packaging and disposable materials due to its properties, abundance and low cost. Research aimed at widening its range of applications includes the improvement of its mechanical properties by mixing it with other polymers. In this study, TPS was blended with oxidized natural rubber (ONR) in order to enhance its plasticity through higher interface compatibility. The oxidation of natural rubber was carried out to promote chemical interactions between the hydroxyl groups of ONR with those of TPS through hydrogen bonding. The blends were prepared by extrusion and characterized using dynamic mechanical analysis, tensile tests, contact angle measurements, water absorption and scanning electron microscopy. The results showed that these new materials displayed the expected improvements, as well as better water resistance and decreased brittleness. (c) 2014 Society of Chemical Industry (AU)

FAPESP's process: 12/05184-0 - Bionacomposites based on nanocellulose and natural rubber
Grantee:Eliane Trovatti
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 07/08394-7 - Reactive extrusion (REX) of thermoplastic starch: Reactive blending and chemical modification via depolymerization/polymerization
Grantee:Antonio José Felix de Carvalho
Support type: Research Grants - Young Investigators Grants