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Molecular Structures and Mechanical Properties of Microbe Rapid Coagulation Natural Rubber

文献类型： 外文期刊

作者： Liang Yue 1 ; Huang Mao-Fang 1 ; Zeng Zong-Qiang 1 ;

作者机构： 1.CATAS, Minist Agr, Key Lab Trop Crops Proc, Agr Prod Proc Res Inst, Zhanjiang 524001, Guangdong, Peoples R China

2.Natl Technol & Engn Ctr Key Trop Prod, Haikou 571700, Peoples R China

关键词： natural rubber;microbial rapid coagulation;pyrolysis-gas chromatography/mass spectrometry (py-GC/MS);molecular structures;mechanical properties

期刊名称：CHINESE JOURNAL OF STRUCTURAL CHEMISTRY （ 影响因子：0.893； 五年影响因子：0.603 ）

ISSN： 0254-5861

年卷期： 2011 年 30 卷 12 期

页码：

收录情况： SCI

摘要： In this work, molecular structures, dynamic mechanical properties and glass transition temperatures of microbe coagulated natural rubber (NR) samples were analyzed by using pyrolysis gas chromatography-mass spectrometry (py-GC/MS), rubber process analyzer (RPA) and dynamic mechanical thermal analysis (DMA). And the cross-linked network structures and mechanical properties of the corresponding NR vulcanizates were further determined by using nuclear magnetic resonance (NMR) crosslink density spectrometer (XLDS-15) and universal testing machines. The results show that NR raw rubber produced by rapidly coagulated with microorganism exhibits a simple molecular structure composition and good dynamic mechanical properties, and the corresponding NR vulcanizates possess the aggregation structure of high cross-linked density, a high glass transition temperature of -61.5. and high mechanical properties (tensile strength reaches 25.2 MPa), as compared with that coagulated with acetic acid.

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