Effect of the Phenological Stage in the Natural Rubber Latex Properties

Natural Rubber Latex (NRL) from Hevea brasiliensis is a material studied because of their industrial applications. For its natural origin, it is possible to find rubber particles, proteins, phospholipids and ashes. These non-rubber content are responsible for the latex colloidal stability. H. brasil...

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Bibliographic Details
Published in:Journal of polymers and the environment 2019-02, Vol.27 (2), p.364-371
Main Authors: Zapata-Gallego, Natalia Trinidad, Álvarez-Láinez, Mónica Lucía
Format: Article
Language:English
Subjects:
Amorphous materials
Ashes
Chemistry
Chemistry and Materials Science
Correlation analysis
Environmental Chemistry
Environmental Engineering/Biotechnology
Flowering
Gloves
Industrial applications
Industrial Chemistry/Chemical Engineering
Latex
Material properties
Materials Science
Melting point
Melting points
Microstructural analysis
Natural rubber
Nutritional requirements
Original Paper
Phospholipids
Polymer Sciences
Proteins
Rheological properties
Rheology
Rubber
Stability analysis
Thermodynamic properties
Trees
Yield
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Summary:Natural Rubber Latex (NRL) from Hevea brasiliensis is a material studied because of their industrial applications. For its natural origin, it is possible to find rubber particles, proteins, phospholipids and ashes. These non-rubber content are responsible for the latex colloidal stability. H. brasiliensis tree goes through four stages during the year, changing its nutritional requirements and as a result the rubber yield and stability. Most studies have correlated latex characteristics and yield with tree age and clonal origin but none of them with phenological stages. The impact of the phenological stage on the material properties has not been completely identified yet. In this work, the influence of the clonal origin and the phenological stage with the material properties is studied. Thermal behavior, microstructural analysis, morphological study, colloidal stability and rheology are analyzed for FX3864, IAN710 and AIN873 clones during 1 year. NRL is an amorphous material but during the high-yield period, a melting point is observed. Flowering is the stage when phospholipids, protein and isoelectric point are higher. Phenological stages do not affect the rubber, but the main changes are in the non-rubber content.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-018-1337-x