Natural Rubber Films Incorporated with Red Propolis and Silver Nanoparticles Aimed for Occlusive Dressing Application

Natural rubber (NR) films can reduce silver metal ions forming embedded metal nanoparticles, a process that could be described as green synthesis. The NR films acting as a reactor generate and incorporate silver nanoparticles (AgNPs). Organic acids and amino acids play a crucial role in the formation of AgNPs. The plasmon extinction obtained in the UV-visible spectrum shows the presence of nanoparticles in the film after dipping the NR film into a solution of silver nitrate at 80°C. Electron microscopic analysis confirms the presence of AgNPs in the NR film and characterization by atomic force microscopy shows a change in the roughness of the NR film with AgNPs. In addition, our preliminary results fromin vitrotoxicity studies (MTT and comet assays) of the NR films and NR films with silver nanoparticles (NR/Ag) show that they are not toxic to cell lineage CHO-K1 (cells from the ovary of a Chinese hamster), an important result for potential medical applications.

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Synthesis of Silver Nanoparticles in Skim Natural Rubber for Dye-sensitized Solar Cell

The Journal of King Mongkut s University of Technology North Bangkok ◽

10.14416/j.kmutnb.2018.01.006 ◽

2018 ◽

Author(s):

Nattapon Popaitoon ◽

Nuttapol Pootrakulchote

Keyword(s):

Silver Nanoparticles ◽

Solar Cell ◽

Natural Rubber ◽

Dye Sensitized Solar Cell ◽

Dye Sensitized

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PMMA particles coated with chitosan-silver nanoparticles as a dual antibacterial modifier for natural rubber latex films

Colloids and Surfaces B Biointerfaces ◽

10.1016/j.colsurfb.2018.11.037 ◽

2019 ◽

Vol 174 ◽

pp. 544-552 ◽

Cited By ~ 7

Author(s):

Teeraporn Suteewong ◽

Jitrada Wongpreecha ◽

Duangporn Polpanich ◽

Kulachart Jangpatarapongsa ◽

Chariya Kaewsaneha ◽

...

Keyword(s):

Silver Nanoparticles ◽

Natural Rubber ◽

Natural Rubber Latex ◽

Latex Films ◽

Rubber Latex ◽

Pmma Particles

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Silver nanoparticles in polyvinylpyrrolidone grafted natural rubber

Reactive and Functional Polymers ◽

10.1016/j.reactfunctpolym.2009.11.009 ◽

2010 ◽

Vol 70 (3) ◽

pp. 168-174 ◽

Cited By ~ 13

Author(s):

N.H.H. Abu Bakar ◽

J. Ismail ◽

M. Abu Bakar

Keyword(s):

Silver Nanoparticles ◽

Natural Rubber

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Effects of silver nanoparticles on physical and antibacterial properties of natural rubber latex foam

Materials Today Proceedings ◽

10.1016/j.matpr.2019.06.230 ◽

2019 ◽

Vol 17 ◽

pp. 1914-1920 ◽

Cited By ~ 1

Author(s):

Khemara Mam ◽

Rapeephun Dangtungee

Keyword(s):

Silver Nanoparticles ◽

Natural Rubber ◽

Natural Rubber Latex ◽

Antibacterial Properties ◽

Rubber Latex

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The Role of Ammonia in Synthesis of Silver Nanoparticles in Skim Natural Rubber Latex

Journal of Nanoscience ◽

10.1155/2016/7258313 ◽

2016 ◽

Vol 2016 ◽

pp. 1-6 ◽

Cited By ~ 3

Author(s):

Panu Danwanichakul ◽

Thanawat Suwatthanarak ◽

Chidchanok Suwanvisith ◽

Duangkamol Danwanichakul

Keyword(s):

Silver Nanoparticles ◽

Natural Rubber ◽

Natural Rubber Latex ◽

Ammonia Concentration ◽

Rubber Latex ◽

Controlling Effect ◽

Uv Visible ◽

Size Controlling ◽

Latex Production

Silver nanoparticles (AgNPs) were synthesized in skim natural rubber latex, the by-product from concentrated latex production. The role of ammonia was investigated by varying the concentration to be 0.217, 0.362, 0.377, 0.392, and 0.406 wt%. The emergence of AgNPs was detected by UV-visible spectrophotometer and electrical conductivity meter. Upon increasing ammonia concentration, the ABS peak increased to a maximum and slightly shifted to a higher wavelength and then it decreased afterward and slightly shifted to a lower wavelength. The shift of the ABS peak was consistent with the conductivity result. The kinetic model was proposed to explain the competition between the reducing effect and size-controlling effect of ammonia. The reducing effect seemed to dominate in the low range of concentration while the size-controlling effect via the formation of AgNH32+ complex ion was important in the higher range. The TEM figures evidently confirmed the effects.

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