The stability of lutoids in Hevea brasiliensis latex influences the storage hardening of natural rubber
NR stored for several months becomes progressively harder, a phenomenon called storage hardening affecting the processing properties of NR. The impact of lutoid stability on NR storage hardening was studied. Lutoid stability was determined by a qualitative parameter (lutoid integrity after centrifugation) and by a quantitative parameter (the bursting index or BI). The storage hardening of samples made from washed rubber particles (WRP) was compared to samples made from whole field latex. Lutoid bursting had a significant effect on the storage hardening of NR as shown by a significant correlation between the increase in Wallace plasticity (?P) after an accelerated storage hardening test and the BI of lutoids. The BI test appeared a better indicator of lutoid stability than the qualitative observation of lutoids after centrifugation. It was also shown that the ADS prepared with purified particles have a much lower PRI (70) than the controls ADS prepared with the entire latex (PRI=110).
| Main Authors: | , , , , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | Q60 - Traitement des produits agricoles non alimentaires, F60 - Physiologie et biochimie végétale, Hevea brasiliensis, caoutchouc, stabilité, aptitude à la conservation, stockage, durcissement, composé chimique, latex, http://aims.fao.org/aos/agrovoc/c_3589, http://aims.fao.org/aos/agrovoc/c_6678, http://aims.fao.org/aos/agrovoc/c_36930, http://aims.fao.org/aos/agrovoc/c_4082, http://aims.fao.org/aos/agrovoc/c_7427, http://aims.fao.org/aos/agrovoc/c_16185, http://aims.fao.org/aos/agrovoc/c_49870, http://aims.fao.org/aos/agrovoc/c_4214, http://aims.fao.org/aos/agrovoc/c_7701, |
| Online Access: | http://agritrop.cirad.fr/575916/ http://agritrop.cirad.fr/575916/1/document_575916.pdf |
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