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Polymers 2016, 8(12), 421; doi:10.3390/polym8120421

Miscibility, Morphology and Crystallization Behavior of Poly(Butylene Succinate-co-Butylene Adipate)/Poly(Vinyl Phenol)/Poly(l-Lactic Acid) Blends

1,2
,
1,2,* and 1,3
1
Ministry-Province Co-Cultivated Key Laboratory Base of Natural Gas Conversion, Ningxia University, Yinchuan 750021, China
2
School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
3
Teaching and Research Group of Physics, Liupanshan High School of Ningxia, Yinchuan 750002, China
*
Author to whom correspondence should be addressed.
Academic Editor: Shiao-Wei Kuo
Received: 10 October 2016 / Revised: 23 November 2016 / Accepted: 1 December 2016 / Published: 6 December 2016
(This article belongs to the Special Issue Polymer Blends 2017)
View Full-Text   |   Download PDF [9907 KB, uploaded 6 December 2016]   |  

Abstract

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 Tgs of the two components. When PVPh content reaches up to 50 wt %, the blend sample exhibits only one Tg, 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. View Full-Text
Keywords: poly(l-lactic acid); poly(butylene succinate-co-butylene adipate); miscibility; crystallization; hydrogen bonding poly(l-lactic acid); poly(butylene succinate-co-butylene adipate); miscibility; crystallization; hydrogen bonding
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Si, P.; Luo, F.; Luo, F. Miscibility, Morphology and Crystallization Behavior of Poly(Butylene Succinate-co-Butylene Adipate)/Poly(Vinyl Phenol)/Poly(l-Lactic Acid) Blends. Polymers 2016, 8, 421.

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