Degradable PHBHHx Modified by the Silk Fibroin for the Applications of Cardiovascular Tissue Engineering

Table 2

The contact angle and surface free energy of SF-modified PHBHHx and PHBHHx films [28].

Sample	𝜃H2O (°)	𝜃CH2I2 (°)	𝛾^𝑑𝑠 (mJ/m^2)	𝛾^𝑝𝑠 (mJ/m^2)	𝛾𝑠=𝛾^𝑑𝑠+𝛾^𝑝𝑠 (mJ/m^2)
SF/PHBHHx	52±5	38±2	40.5	16.9	57.4
PHBHHx	90±1	46±1	36.6	1.3	37.9