Journal
POLYMERS
Volume 8, Issue 12, Pages -Publisher
MDPI AG
DOI: 10.3390/polym8120421
Keywords
poly(l-lactic acid); poly(butylene succinate-co-butylene adipate); miscibility; crystallization; hydrogen bonding
Categories
Funding
- National Natural Science Foundation of China [21264012]
- Open Project of Chinese Academy of Sciences Key Laboratory of Engineering Plastics, Institute of Chemistry
Ask authors/readers for more resources
Amorphous poly(vinyl phenol) (PVPh) is introduced into poly(butylene succinate-co-butylene adipate)/poly(l-lactic acid) (PBSA/PLLA) blends via solution casting. Fourier transform infrared spectroscopy (FTIR) analysis verifies that intermolecular hydrogen bonding formed in PBSA/PVPh/PLLA blends. The miscibility between PBSA and PLLA is improved with PVPh incorporation as evidenced by approaching T(g)s of the two components. When PVPh content reaches up to 50 wt %, the blend sample exhibits only one T-g, meaning complete miscibility between PBSA and PLLA. The improved miscibility of PBSA/PLLA blends is further confirmed by scanning electron microscope (SEM). Typical see-island phase separation structure for PBSA/PLLA blend transforms into homogenous phase structure for blend samples with 5 wt % PVPh and above. Non-isothermal crystallization analysis shows that the crystallization temperature and crystallization enthalpy of PBSA decrease with PVPh addition, and those of PLLA also show a decreasing trend. Isothermal crystallization rate of PBSA in blend samples distinctly decreases with PVPh incorporation, whereas that of PLLA in blend samples increases slightly with PVPh addition. Wide angle X-ray diffraction (WAXD) analysis indicated that PLLA in blend samples remained partly crystallized, while PBSA turned into amorphous state with increasing PVPh contents.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available