| Structure and Properties of Polyvinyl Alcohol/Natural Rubber Blends |
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| DOI： |
| Key Words: natural rubber；polyvinyl alcohol；blend；structure；property |
| Author Name | Affiliation | | CHEN Ke | Agricultural Product Processing Research Institute，Chinese Academy of Tropical Agricultural Sciences；Key Laboratory of Tropical Crop Product Processing of Agriculture Ministry | | WANG Rui | 中国热带农业科学院农产品加工研究所；农业部热带作物产品加工重点实验室 |
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| Abstract: |
| By using epoxidized natural rubber latex as interfacial modifier，polyvinyl alcohol (PVA)/natural rubber (NR) blends were prepared by rubber-latex blend method，and the microstructure，glass-transition temperature (Tg)，physical properties and thermal stability of PVA/NR blends were investigated.The results showed that，PVA could be well dispersed in NR phase，the particle size of dispersion phase was in the range of 0.1～1.0 μm，and most of the particle size was 0.5～0.8 μm.The Shore A hardness and tear strength of NR compound were significantly increased by adding PVA.As the addition level of PVA was less than 10 phr，the tensile strength of the blend was similar to that of NR compound.As the addition level of PVA increased，theTg of the blend increased at first and then decreased.As the addition level of PVA was over than 10 phr，the tensile strength of the blend was significantly decreased，the thermal stability decreased，and the initial decomposition temperature gradually decreased. |
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