Reclamation of Natural Rubber Waste

This article proposes a new type of magnetorheological elastomer (MRE) based on natural rubber (NR) and waste natural rubber gloves (wNRg) blends. The material properties of the MRE samples were investigated with specific focus on the curing and swelling kinetics. Two different series were prepared; the first used carbonyl iron (CI) as the single filler in the MRE, whereas the second hybridized CI with carbon black (CB) to prepare an MRE resistant to solvents. The results show that most properties depend strongly on the nature of both fillers. The higher thermal conductivity of the CI caused a substantial decrease in both the scorch and curing times and the activation energy in the curing process. Based on the diffusion study, a higher volume of fillers in the rubber composites resulted in a greater area of blockage and restricted the penetration of the solvent tested throughout the composites, irrespective of whether CI alone or in combination with CB was used in the composites.

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Ethanol production by Zymomonas mobilis using natural rubber waste as a nutritional source

Journal of Fermentation and Bioengineering ◽

10.1016/0922-338x(92)90036-t ◽

1992 ◽

Vol 74 (6) ◽

pp. 384-388 ◽

Cited By ~ 10

Author(s):

Sudarut Tripetchkul ◽

Michio Tonokawa ◽

Ayaaki Ishizaki

Keyword(s):

Natural Rubber ◽

Ethanol Production ◽

Zymomonas Mobilis ◽

Rubber Waste

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Rhizopus oligosporus grown on natural rubber waste serum for production of single cell protein: a preliminary study

World Journal of Microbiology and Biotechnology ◽

10.1007/bf01200687 ◽

1992 ◽

Vol 8 (1) ◽

pp. 63-64 ◽

Cited By ~ 3

Author(s):

M. S. Mahat ◽

I. C. MacRae

Keyword(s):

Natural Rubber ◽

Single Cell ◽

Protein A ◽

Single Cell Protein ◽

Cell Protein ◽

Rhizopus Oligosporus ◽

Rubber Waste ◽

Preliminary Study

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Influences of Particle Sizes on Properties of Natural Rubber/Waste Ground Rubber Powders Blends

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.773.668 ◽

2013 ◽

Vol 773 ◽

pp. 668-672

Author(s):

Jun Liang Liu ◽

Ping Liu ◽

Xiao Qiang Tang ◽

Dong Zeng ◽

Xing Kai Zhang ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Natural Rubber ◽

Chemical Activation ◽

Cross Linking ◽

Particle Sizes ◽

Elongation At Break ◽

Tear Strength ◽

Rubber Waste ◽

Ground Rubber

In this paper, the blends of natural rubber with waste ground rubber powders have been prepared by mechano-chemical activation method. The influences of particle sizes on both processing performances and mechanical properties have been investigated. The results indicated that: the blends with waste ground rubber powders of smaller particle sizes approached to higher surface tensile and easily mechano-chemical activation, which led to the formation of complete homogenous re-vulcanization cross-linking structure and resulted in the improvements of the whole performances of the final products. The tensile strength, the elongation at break and tear strength approached to the highest value of 20.7MPa, 530% and 33.0 kN/m as the 100mesh waste ground rubber powders were used as the starting materials.

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CHANGES OF BACTERIAL CONSORTIA IN ENRICHMENT OF DEPROTEINIZED NATURAL RUBBER WITH SAPA SOIL

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/59/1/15563 ◽

2021 ◽

Vol 59 (3) ◽

pp. 302

Author(s):

Nguyen Hoang Dung ◽

Nguyen Thi Thu Trang ◽

Nguyen Thi Thanh ◽

Pham Thi Quynh ◽

Nguyen Tien Thanh ◽

...

Keyword(s):

Natural Rubber ◽

Gene Sequencing ◽

16S Rrna Gene Sequencing ◽

Hydroxyl Group ◽

Rrna Gene ◽

Spectroscopy Analysis ◽

Bacterial Consortia ◽

Rubber Waste ◽

Rrna Gene Sequencing ◽

Deproteinized Natural Rubber

The accumulation of rubber waste has become a major environmental issue worldwide due to its adverse effects on ecology. Bioremediation is focused to minimize this problem. In this study, the degradation of deproteinized natural rubber (DPNR) using bacterial consortia enriched from Sapa soil was examined. This soil was not history with rubber. The highest 39.16 ± 1.95 % weight loss of DPNR film was detected in the sixth enrichment consortium after 30 days of incubation. The occurrence of hydroxyl group in the film was observed by Fourier Transform Infrared Spectroscopy analysis. The changes in bacterial community in the consortia were determined by metagenomic analysis using 16S rRNA gene sequencing. The dominant phyla in all consortia were Actinobacteria, Bacteroidetes, and Proteobacteria, while the phylum Actinobacteria was key rubber-degraders in the consortia.

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