Shelf life of liquid epoxidized natural rubber (LENR)

Liquid epoxidized natural rubber (LENR) is a modified natural rubber having a low-molecular weight prepared via degradation of Epoxidized natural rubber (ENR). Among the key characteristics of LENR compared to ENR are that they are softer, stickier and flow better at elevated temperature. With these...

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Bibliographic Details
Main Authors: Darji, Dazylah, Yusof, Nurul Hayati, Rasdi, Fatimah Rubaizah Mohd
Format: Conference Proceeding
Language:English
Subjects:
Gloves
High temperature
Latex
Liquid chromatography
Molecular weight
Natural rubber
Rubber
Shelf life
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Summary:Liquid epoxidized natural rubber (LENR) is a modified natural rubber having a low-molecular weight prepared via degradation of Epoxidized natural rubber (ENR). Among the key characteristics of LENR compared to ENR are that they are softer, stickier and flow better at elevated temperature. With these attributes, LENR is suitable for applications such as binders, processing aids, and toughening agents. In the present work, the storage effects of ENR on the properties of LENR were checked and the changes of properties of LENR during its storage period were carried out by monitoring their molecular weight using gel permeation chromatography (GPC) under room temperature conditions. The study indicated that ENR latex was stable and suitable to be used up to three months of storage as the starting material for preparation of LENR. Furthermore, there is no significant changes of molecular weight obtained ∼15.0 × 103 g/mol and gel content obtained less than 2.0 w/w%. This showed that the LENR was consistent upon storage.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5047184