Hydrolytic degradation behaviour of sucrose palmitate reinforced poly(lactic acid) nanocomposites.
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.
Centre for Biopolymer Science and Technology (CBPST), Kochi, Kerala, 683501, India.
Ravi Babu
RB
Valapa
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India. Electronic address: pugal@iitg.ernet.in.
Pugazhenthi
P
G
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India. Electronic address: vkatiyar@iitg.ernet.in.
Vimal
V
Katiyar
D002152:Calorimetry, Differential Scanning; D002850:Chromatography, Gel; D003460:Crystallization; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008970:Molecular Weight; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D061848:Optical Imaging; D011091:Polyesters / Q000737:chemistry*; D013395:Sucrose / Q000031:analogs & derivatives* / Q000737:chemistry; D013696:Temperature; D013818:Thermogravimetry; D014961:X-Ray Diffraction
D011091:Polyesters; C041567:sucrose monopalmitate; C033616:poly(lactide); D013395:Sucrose
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)