Peroxide vulcanization of natural rubber. Part I: effect of temperature and peroxide concentration
-
Ján Kruželák
,
Richard Sýkora
Abstract
Four different peroxides as curing agents were used to prepare vulcanizates based on natural rubber (NR). The effects of temperature and peroxide concentration on the vulcanization characteristics of rubber compounds, cross-link density (ν) and physical-mechanical properties of equivalent vulcanizates were investigated. The results revealed that the vulcanization temperature and also the relative amount of peroxide decomposition products are of significant importance in the properties of vulcanizates. Lower vulcanization temperature and lower concentration of peroxides were found to be better factors, showing a proper balance between the degree of cross-linking of the rubber and degradation of the macromolecular chains by side reactions in relation to the crystallization of NR, which imparts vulcanizates based on NR outstanding properties.
Acknowledgments
This work was supported by the Slovak Research and Development Agency under the contract No. APVV069412.
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©2014 by De Gruyter
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Articles in the same Issue
- Frontmatter
- Editorial
- Editorial improvements at the Journal of Polymer Engineering
- Original articles
- Cationic copolymerization of 1,3-pentadiene with α-pinene
- In vitro degradation of polyglycolic acid synthesized by a one-step reaction
- Synthesis of a novel class of mixed-type surfmers and their properties in water
- Unique viscosity mutation of multi-generation hyperbranched waterborne polyurethane
- Preparation and characterization of oxidized starch-graft-poly(styrene-butyl acrylate) latex via emulsion polymerization
- Peroxide vulcanization of natural rubber. Part I: effect of temperature and peroxide concentration
- The stimuli-response characters of hydrogels prepared using ultrasound
- A new conductometric biosensor based on horseradish peroxidase immobilized on chitosan and chitosan/gold nanoparticle films
- A new approach for the development of textile waste cotton reinforced composites (T-FRP): laminated hybridization vs. coupling agents
- Effects of the surface treatment of wollastonite on the tensile and flow properties for reinforced polypropylene composites
- Effect of the quenching temperature on the mechanical and thermophysical properties of polycarbonate pigmented with titanium dioxide
- Processing and characterization of poly(lactic acid) blended with polycarbonate and chain extender
- Characteristics analysis and mold design for ultrasonic-assisted injection molding
