Synthesis and Characterization of Nano-Silver Incorporated Natural Rubber Latex Foam

J of Applied Polymer Sci

Azahari

et al. 2013

Self Cite

The green synthesis of silver nanoparticles (AgNPs) in centrifuged natural rubber latex (NRL) by in situ reduction of silver nitrate by NRL is described. The synthesis of AgNP within NRL was successfully carried out without the addition of any reducing agent or stabilizers. The modified AgNP incorporated with centrifuged NRL (GAgNP_NRL) was used to make NRL foam (NRLF) by the Dunlop production method. An ultraviolet-visible (UV-Vis) spectrophotometer analysis, Zeta potential analysis data and transmission electron micrograph analysis proved that the modified centrifuged NRL consisted of stable nanometer-sized silver particles. A scanning electron microscopic (SEM)/energy-dispersive X-ray spectroscopy (EDX) analysis and UV-Vis analysis of a latex film made out of the modified GAgNP_NRL compound showed nano-sized silver particles inside the rubber matrix. The final product of the NRLF (GAgNP_NRLF) made out of the GAgNP_NRL compound was tested for antimicrobial properties against gram-negative Escherichia coli, gram-positive Staphylococcus aureus and Staphylococcus epidermidis. The resultant GAgNP_NRLF strongly inhibited the bacteria.

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Imparting antimicrobial properties to natural rubber latex foam via green synthesized silver nanoparticles

Rathnayake

J of Applied Polymer Sci

Azahari

et al. 2013

Self Cite

“…[10,11] NRL is used to make a variety of products such as gloves, catheters, and condoms. Besides consuming less energy when produced, NRL is also known to possess adhesive properties, low viscosity, and low surface tension, which would render some improvements to the interaction between R-EPDM and NR.…”

Section: Introductionmentioning

confidence: 99%

Blending of Natural Rubber/Recycled Ethylene-Propylene-diene Rubber: Promoting the Interfacial Adhesion Between Phases by Natural Rubber Latex

Nabil

International Journal of Polymer Analysis and Characterization

2014

This article deals with blends based on natural rubber (NR) and recycled ethylene-propylene-diene rubber (R-EPDM). Natural rubber latex (NRL) was introduced into the blends to enhance interfacial adhesion between NR and R-EPDM. A new route of compounding was also suggested. The blends were prepared by mixing R-EPDM and other additives in NRL before blending with natural rubber on a two-roll mill. By applying this method, the homogeneity of the blends and cross-linking distribution are significantly improved. The blends exhibited superior state of cure, swelling resistance, mechanical properties and dynamic mechanical properties. The degree of entanglement between NR and R-EPDM also increased after NRL modification.

“…It can be used to reduce the interfacial tension and enhance the interfacial adhesion between phase boundaries. NRL is a fascinating water‐based biopolymer derived from the milky white color sap of Hevea brasiliensis . NRL is used to make a variety of products such as gloves, catheters and condoms.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the thermal stability of natural rubber/recycled ethylene propylene diene rubber blends through the use of bio‐compatibilizers

Hayeemasae

Vinyl Additive Technology

2018

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Recycling of rubber waste and searching for alternative routes to prolong the service life of rubber products are of significant concern. One of the ideas to reduce the rubber waste is to blend it with the virgin rubber to gain synergistic properties from its own advantages. In this study, natural rubber (NR) and recycled ethylene propylene diene rubber (R-EPDM) were blended as a way to combine the mechanical properties and oxidative resistance given by NR and R-EPDM, respectively. New approaches in enhancing the thermal stability were observed through the use of bio-compatibilizers that is, alkanolamide (AKA)-based refined, bleached, and deodorized palm stearin (RBDPS) and NR latex (NRL). The thermal stability of the blends was monitored through two techniques: thermo-oxidative aging and thermogravimetric Analysis. Results indicated that the aging resistance of the blends was improved by addition of AKA and NRL as bio-compatibilizers. This is confirmed by the enhancement of thermal decomposition temperature and the activation energies of the blends. The obtained TG profiles and the calculated kinetic parameters indicated that introducing AKA and NRL enhanced their thermal stability, especially at higher contents of AKA and NRL. J. VINYL ADDIT. TECHNOL., 25:E155-E165, 2019.