BioMed Research International / 2015 / Article / Tab 2

Research Article

Biofunctionalized Nanofibers Using Arthrospira (Spirulina) Biomass and Biopolymer

Table 2

Source of polyhydroxybutyrate (PHB) and polyhydroxybutyrate-co-valerate (PHB-HV) and the physical characteristics of nanofibers constructed from PHB or PHB containing 5% or 12% (w/w) commercially available PHB-HV and biofunctionalized using Spirulina biomass.

PHB source, sample code, and compositionConductivity (mS cm−1)Viscosity
(, Pa s)
Melting temperature
(, °C)
Initial degradation temperature
(, °C)
Final degradation temperature
(, °C)
Impurities
(%, w/w)
Molecular weight
(Da)
Crystallinity
(, %)

Spirulina platensis
 SP1, 22% PHB1.1 × 10−41.1
 SP2, 22% PHB + 2.2% NaCl7.71175.8232.43291.31.5 × 10650.2
 SP3, 7% PHB + 5% biomass5.80.5
Commercial
 B, 20% PHB1.4 × 10−40.2180265.9313.21.39.9 × 10557.2
 5V1, 20% PHB-HV51.2 × 10−41
 5V2, 20% PHB-HV5 + 0.2% NaCl6.30.9176.7243.7279.931.9 × 10650
 5V3, 15% PHB-HV5 + 5% biomass4.70.7
 12V1, 20% PHB-HV121.5 × 10−40.65
 12V2, 20% PHB-HV12 + 0.2% NaCl70.6149.5252.5287.229.2 × 10521.3
 12V3, 15% PHB-HV12 + 5% biomass5.90.4
Cupriavidus necator
 CN, 20% PHB9 × 10−60.3157.3276.73291.72.4 × 10640.8
 RE, 40% PHB2 × 10−60.5180.1238.5279.74.15.8 × 10574.7