Bioinorganic Chemistry and Applications / 2010 / Article / Tab 7

Research Article

Coordination Polymer: Synthesis, Spectral Characterization and Thermal Behaviour of Starch-Urea Based Biodegradable Polymer and Its Polymer Metal Complexes

Table 7

(a) ASTM standards of biodegradable polymeric compounds.

EnvironmentASTMMicroorganism

Single speciesD5247-92, G-21, G-22Species of bacteria and fungi specified
Sewage sludgeD5209-91, D5271-92Aerobic-activated sludge organisms
Marine environmentD5437-93Marine algae and invertebrates
Compost pileD5338-93Thermophillic microbes in compost
Anaerobic environmentD5210-92Anaerobic micros from activated sludge

(b) % CO2 mineralization of starch, SUr, and its polymer metal complex.

Time (Hrs)CO2 Mineralization %
StarchPolymeric resinPolymer metal complex

244.84
441.67.57.1
682.2118
923.714.59.7
11051812.8
136922.514.5
160152717.2
18718.527.417.3
20018.627.520.4

(c) Biodegradability of starch, SUr and SUr-Mn(II).

MaterialBiodegradability rate constant (k)Total Wt. loss (gm)Medium

Starch0.0012970.0108Biotic
SUr0.001960.01527Biotic
SUr-Mn(II)0.0011630.00906Biotic

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