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Int J Biol Macromol. 2016 Aug;89:70-80. doi: 10.1016/j.ijbiomac.2016.04.040. Epub 2016 Apr 16.

Hydrolytic degradation behaviour of sucrose palmitate reinforced poly(lactic acid) nanocomposites.

Author information

1
Centre for Biopolymer Science and Technology (CBPST), Kochi, Kerala, 683501, India.
2
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India. Electronic address: pugal@iitg.ernet.in.
3
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India. Electronic address: vkatiyar@iitg.ernet.in.

Abstract

This work discusses the influence of novel biofiller, "sucrose palmitate" (SP) on the hydrolytic degradation behavior of poly(lactic acid) (PLA) nanocomposites. The influence of temperature and pH of the solution on the hydrolytic degradation behavior of PLA and PLA-SP nanocomposites was investigated. The variation in the crystallinity of PLA and PLA composites subjected to the hydrolytic degradation process is verified by XRD and DSC analysis. The morphological changes that occurred during the degradation process are observed by scanning electron microscopy (SEM). Thermo-gravimetric analysis confirms the loss of thermal stability of the neat PLA as well as composites after hydrolytic degradation process. Transparency measurements support the enhancement in opacity of both the PLA and PLA-SP nanocomposites with progress in hydrolytic degradation period.

KEYWORDS:

Differential scanning calorimetry analysis (DSC); Hydrolytic degradation; Poly(lactic acid); Scanning electron microscopy (SEM); Sucrose palmitate; Thermo-gravimetric analysis (TGA); Transparency measurements; X-ray diffraction analysis (XRD)

PMID:
27095433
DOI:
10.1016/j.ijbiomac.2016.04.040
[Indexed for MEDLINE]

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