Factors influencing green strength of commercial natural rubber

Green Processing and Synthesis

article

Nghiem Thi Thuong¹  Phan Trung Nghia¹  Seiichi Kawahara³ 

[1] School of Chemical Engineering, Hanoi University of Science and Technology;Center for Science and Technology of Rubber, Hanoi University of Science and Technology;Department of Materials Science and Technology, Nagaoka University of Technology

关键词: commercial natural rubber;    fatty acids;    green strength;    network structure;    protein;   

DOI  :  10.1515/gps-2018-0019

来源: De Gruyter

【 摘 要 】

The factors influencing the green strength of commercial solid rubbers were investigated in the present study through characterization of commercial natural rubber (NR). Various solid commercial rubbers such as standard Vietnam rubber (SVR10), standard Indonesia rubber (SIR10), India standard natural rubber (ISNR10), ribbed smoked sheets (RSS3), and FNR (commercial Sumitomo Rubber) were used as a source. Purification of the samples was carried out through acetone extraction and purified samples were characterized by nuclear magnetic resonance (NMR) and Fourier-Transform infrared spectroscopy. Degradation was found for SVR10, ISNR10, and SIR10 but not for RSS3 and FNR through the assignment of 13 C-NMR signals. Acetone extraction was found to improve the green strength of commercial NR due to the removal of impurities. Linked fatty acids and proteins contributed to the upturn of stress at small strain. However, the network structure of degraded rubbers had an insignificant role in enhancing the green strength of commercial NR.

【 授权许可】

CC BY