Advances in Materials Science and Engineering / 2017 / Article / Tab 4

Research Article

Deproteinization of Nonammonia and Ammonia Natural Rubber Latices by Ethylenediaminetetraacetic Acid

Table 4

Physical properties of DPNR.

PropertiesSamples
Standard of STR 5LFR-SH DPNR-EDTA-4NaFR-NH3 DPNR-EDTA-4Na

Dirt content (wt%)0.04 max0.0040.003
Volatile matter content (wt%)0.8 max0.030.03
Ash content (wt%)0.4 max0.110.13
Nitrogen content (wt%)0.6 max0.0050.008
Initial Wallace plasticity ()35 min55.550.0
Plasticity retention index (PRI)60 min40.537.6
Mooney viscosity, ML(1 + 4) 100°C67.066.3
Color (Lovibond)6.0 max1.01.5

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