Poly(3-hydroxybutyrate) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate): Structure, Property, and Fiber

Figure 4

POM photographs of double crystalline block copolymers based on PHBV at different isothermal melt-crystallization temperatures. (a) PHCL-60, 30°C; (b) PHCL-60, 38°C; (c) PHEG4000, 30°C; and (d) PHEG4000, 36°C [56, 57].

(a)

(b)

(c)

(d)