期刊
POLIMEROS-CIENCIA E TECNOLOGIA
卷 24, 期 2, 页码 143-148出版社
ASSOC BRASIL POLIMEROS
DOI: 10.4322/polimeros.2014.044
关键词
Microorganisms coagulation; natural rubber; rheological properties
资金
- National Natural Science Foundation of China [50773013]
- National Key Technology Research and Development Program of China [2013BAF08B02]
- Key Science and Technology Program of Hainan Province of China [ZDXM20120090]
Tests of the strain sweep, frequency sweep and stress relaxation for raw natural rubber coagulated by microorganisms (NR-m) and raw natural rubber coagulated by acid (NR-a) were carried out with the use of a rubber process analyzer (RPA). The results showed that the storage torque, complex viscosity of NR-m were higher than those of NR-a while the loss factor was lower. The effect of temperature on viscosity of raw NR was studied following the Arrhenious-Frenkel-Eyring model. The viscous flow behavior of NR-m was poorer than those of NR-a. Furthermore, stress relaxation measurements of raw NR showed a longer period of relaxation for NR-m.
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