Renewable resource-based green composites from recycled cellulose fiber and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) bioplastic.
Novel "green" composites were successfully fabricated from recycled cellulose fibers (RCF) and a bacterial polyester, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by melt mixing technique. Various weight contents (15%, 30%, and 40%) of the fibers were incorporated in the PHBV matrix. The effect of the fiber weight contents on the thermal, mechanical, and dynamic-mechanical thermal properties of PHBV was investigated and a comparative property analysis was performed with RCF-reinforced polypropylene (PP) composites. The tensile and storage moduli of the PHBV-based composites were improved by 220% and 190%, respectively, by reinforcement with 40 wt % RCF. Halpin-Tsai and Tsai-Pagano's equations were applied for the theoretical modeling of the tensile modulus of PHBV-based composites. The heat deflection temperature (HDT) of the PHBV-based composites was increased from 105 to 131 degrees C, while the coefficient of linear thermal expansion (CLTE) value was reduced by 70% upon reinforcement with 40 wt % RCF. The PHBV-based composites had also shown better tensile and storage moduli and lower CLTE values than PP-based composites. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) were used to study the melting behavior, thermal stability, and morphology of the composite systems, respectively.
Bhardwaj
Rahul
R
School of Packaging, 130 Packaging Building, 2100 Engineering Building, Michigan State University, East Lansing, Michigan 48824, USA.
Mohanty
Amar K
AK
Drzal
L T
LT
Pourboghrat
F
F
Misra
M
M
D001704:Biopolymers / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning / Q000379:methods; D002482:Cellulose / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning / Q000379:methods; D015394:Molecular Structure; D008970:Molecular Weight; D010316:Particle Size; D011091:Polyesters / Q000737:chemistry*; D011126:Polypropylenes / Q000737:chemistry; D012680:Sensitivity and Specificity; D013696:Temperature; D013718:Tensile Strength; D013818:Thermogravimetry / Q000379:methods; D000094122:Polyhydroxybutyrates
D001704:Biopolymers; D002482:Cellulose; D011091:Polyesters; D011126:Polypropylenes; C052620:poly(3-hydroxybutyrate)-co-(3-hydroxyvalerate); D000094122:Polyhydroxybutyrates