Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/35796
Title: Preparation, optical and thermal properties of CdSe-ZnS/poly(lactic acid) (PLA) nanocomposites
Authors: Gong, XH
Pan, L
Tang, CY 
Chen, L
Hao, ZH
Law, WC 
Wang, XT
Tsui, CP 
Wu, CG
Keywords: Polymer-matrix composites (PMCs)
Optical properties/techniques
Thermal properties
Quantum dots
Issue Date: 2014
Publisher: Elsevier
Source: Composites. Part B, Engineering, 2014, v. 66, p. 494-499 How to cite?
Journal: Composites. Part B, Engineering 
Abstract: In this study, CdSe-ZnS/poly(lactic acid) (PLA) nanocomposite films, containing different concentrations of surface-modified CdSe-ZnS quantum dots (QDs), were prepared via a solution casting method. The optical microstructural and thermal properties of the as-prepared QDs/PLA films were investigated. The QDs/PLA films exhibited strong and stable photoluminescence (PL) intensity with concentration dependent amplitudes. The transmission electron microscopy (TEM) pictures revealed that QDs of similar to 5 nm diameter were uniformly dispersed in the PLA matrix. According to the results of thermogravimetric analysis, the weight-loss onset temperature of PLA clearly decreased with the QD content. A combination of Fourier transform infrared (FT-IR) spectroscopy, X-ray diffractometry (XRD) and differential scanning calorimetry (DSC) results suggested that the QDs exhibit obvious nucleation activity on the crystallization behavior of the PLA matrix. This research provides useful information to the foundations of practical applications of QDs/PLA nanocomposites as fluorescent and biodegradable functionalized materials.
URI: http://hdl.handle.net/10397/35796
ISSN: 1359-8368
DOI: 10.1016/j.compositesb.2014.06.016
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