Amphiphilic Poly(3-hydroxy alkanoate)s: Potential Candidates for Medical Applications

Table 1

Classification of the bacterial polyesters.

Carbon source	Poly(3-hydroxy alkanoate) (PHA)			Thermal and mechanical properties
	Type	Side chain (R)	Name∗	𝑇𝑔(^∘C)	𝑇𝑚(^∘C)	Elongation (%)
Sugar, glucose, acetic acid	Short chain length	Methyl,	PHB	15	170	5
		ethyl	PHV
Alkanoic acids, alkanes, and alkanols	Medium chain length	propyl,	PHHx	−40	60	800
		butyl,	PHHp
		pentyl,	PHO
		hexyl,	PHN
		heptyl	PHD
Plant oily acids	Long chain length	More than 14 carbon		−50	40	Soft, sticky
		per repeating unit

∗B: butyrate, V: valerate, Hx: hexanoate, Hp: heptanoate, O: octanoate, N: nonanoate, D: decanoate, 𝑇_𝑔 and 𝑇_𝑚 are glass transition and melting temperatures, respectively.