Cream concentrated latex for foam rubber products

4th International Conference on Mechanical, Materials and Manufacturing

材料科学;机械制造

Suksup, R.^1 ; Imkaew, C.^1 ; Smitthipong, W.^1,2

Specialized Center of Rubber and Polymer Materials in Agriculture and Industry (RPM), Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok, Thailand^1

Office of Natural Rubber Research Program, Thailand Research Fund, Bangkok, Thailand^2

关键词: Dry rubber content;    Eco-friendly products;    Elastic bands;    Expensive machines;    Latex products;    Rubber particles;    Sophisticated machines;    Total solid content;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/272/1/012025/pdf
DOI  :  10.1088/1757-899X/272/1/012025

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Fresh natural latex (around 40% rubber and 60% water) can be transformed to concentrated natural latex (around 60% rubber and 40% water) in order to realise economical transportation and easier latex product's preparation. The concentrated natural latex is an extremely valuable material. It can be applied for many types of products, for example, foam rubber as pillow and mattress, elastic band, etc. Industrially, the concentrated natural latex can be prepared by centrifugation which requires an enormous expensive machine. From the eco-friendly products point of view, most of rubber entrepreneurs in the world try to develop a green rubber product. So, the main objective of this study is to prepare the cream concentrated latex without any sophisticated machine. Thus, we work on a simple, cheap and green method that does not use any expensive machine but uses water-based chemical as sodium alginate to prepare the cream concentrated latex. The optimal amount of sodium alginate in the latex was studied. The main characteristics of the cream concentrated latex were tested by various technics, such as alkalinity, total solid content (TSC), dry rubber content (DRC), etc. We found that there are no significant differences of results between fresh natural latex and cream concentrated latex, except for the TSC and DRC. The TSC and DRC of cream latex are higher than those of fresh natural latex. Finally, we propose a model of natural rubber particle and sodium alginate to form the cream concentrated latex.