Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) as a kind of thermoplastic bio-polymer synthesized by microbial fermentation

presents the advantages of good biodegradability

histocompatibility

etc. The recent research developments of PHBV were introduced from physical

chemical modification and its fiber forming. The physical modification of PHBV are composed of PHBV/inorganics nanocomposites

PHBV/organics nanocomposites

PHBV/petroleum-based polymer composites and fully bio-degradable composites

while the chemical modification was proceeded by graft modification

block modification and copolymerization modification. The advantages and disadvantages of modified PHBV have been compared and discussed from the modified methods and medium. The fiber formation of modified PHBV are mainly processed by melt spinning

dry spinning and electrospinning method. The melt spun PHBV fibers will be targeted to substitute some of the synthetic petroleum-based fibers like PP

PET fibers

while electrostrun PHBV fibers will be successfully and widely used in the field of tissue engineering and regenerative medicines. Moreover

the further research and development direction of PHBV were also presented.