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Thermal Stability and Mechanical Properties of Modified Starch/NR Composite

文献类型： 外文期刊

作者： Wang, Zhi-Fen 2 ; Fu, Xin 3 ; Li, Si-Dong 1 ; Li, Kai-Mian 2 ; Huang, Jie 2 ;

作者机构： 1.Guangdong Ocean Univ, Coll Sci, Zhanjiang 524088, Peoples R China

2.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Key Lab Trop Crops Germplasm Resources Utilizat, Minist Agr, Hainan Danzhou 571737, Peoples R China

3.Hainan Univ, Coll Mat & Chem Engn, Haikou 570228, Peoples R China

关键词： Natural rubber;Modified starch;Composite;Thermal stability;Mechanical properties

期刊名称：JOURNAL OF POLYMER MATERIALS （ 影响因子：0.32； 五年影响因子：0.418 ）

ISSN： 0973-8622

年卷期： 2010 年 27 卷 3 期

页码：

收录情况： SCI

摘要： The starch/natural rubber composite was prepared by blending the modified starch by esterification with natural rubber latex. The modified starch particles are homogenously distributed throughout the natural rubber (NR) matrix. The thermal degradation process of the modified starch/NR composite is similar to that of the pure NR, and only involves one degradation step. In comparison to the host NR, the thermal stability of the composite is significantly improved. The initial, peak and final degradation temperatures of the composite increase by 13 degrees C, 4 degrees C and 14 degrees C, respectively, over the pure NR. The apparent activation energy for the composite is 107.7kJ/mol, which is 12.2 kJ/mol higher than that of the pure NR. The hardness, stress at 500%, tensile strength, permanent deformation and tear strength of composite increase linearly with the increment of dosage of modified starch.

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