Journal ArticleDOI
Cohesive Strength in Guayule Rubber and Its Improvement through Chemical Promotion
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TLDR
In this article, the green strength of Guayule rubber (GR) was determined and compared to that of natural rubber (NR), and it was shown that green strength was very much improved in both rubbers by the addition of MNNA (N-(2-methyl-2-nitropropyl)-4-nitrogenso aniline) for gum and black compounds.Abstract:
Green (cohesive) strength of Guayule rubber (GR) was determined and compared to that of natural rubber (NR). In the case of GR gum compounds the green strength was shown to be inferior to that of NR gum compounds; however, in the case of black compounds GR green strength was similar to that of NR. Green strength was very much improved in both rubbers by the addition of MNNA (N-(2-methyl-2-nitropropyl)-4-nitroso aniline) for gum and black compounds. MNNA also acted as an accelerator and thus reduced the difference in vulcanization rate between NR and GR. When using MNNA, a reduction in energy consumption during mastication was also noted. Finally, MNNA notably increased the tensile modulus and decreased the elongation at break for GR vulcanizates, while maintaining an almost constant tensile strength.read more
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Characterization of fatty acids linked to natural rubber—role of linked fatty acids on crystallization of the rubber
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Highly sensitive natural rubber/pristine graphene strain sensor prepared by a simple method
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Viscoelastic and mechanical properties of large- and small-particle natural rubber before and after vulcanization
Manus Sriring,Adun Nimpaiboon,Sirirat Kumarn,Chakrit Sirisinha,Jitladda Sakdapipanich,Shigeyuki Toki +5 more
TL;DR: In this paper, the authors investigated the viscoelastic and mechanical properties of large and small-particle natural rubber (NR) and found that the LRP rubber was better in both tensile strength and elasticity, as a result of natural branch-point networks formed by aggregation of phospholipid groups at the terminating end (α end) of the laminar rubber chains.
Journal ArticleDOI
Highly purified natural rubber by saponificaion of latex: Analysis of green and cured properties
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Journal ArticleDOI
Strain-induced crystallization behaviour of natural rubbers from guayule and rubber dandelion revealed by simultaneous time-resolved WAXD/tensile measurements: indispensable function for sustainable resources
Yuko Ikeda,Preeyanuch Junkong,Takumi Ohashi,Treethip Phakkeeree,Yuta Sakaki,Atitaya Tohsan,Shinzo Kohjiya,Katrina Cornish +7 more
TL;DR: In this paper, the SIC properties of guayule and dandelion natural rubber were investigated using quick in situ simultaneous synchrotron time-resolved wide-angle X-ray diffraction/tensile measurements.