期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 139, 期 -, 页码 367-376出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2019.07.211
关键词
Thermoplastic starch; Graphene quantum dots; Solid-state photoluminescence; Conductive property; Film
资金
- National Natural Science Foundation of China [31270633]
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control [KF201703]
- Lianyungang 555 Talents Project Program of China [2015-13]
- National Basic Research Program of China [2014CB460610]
Polymer composites based on blends of graphene quantum dots (GQDs) with thermoplastic starch (TPS) were prepared by melt-extrusion combined with hot pressing. The GQDs/TPS films were characterized as potential novel, high-performance, and ecofriendly composites replacing traditional non-biodegradable plastic packaging materials. GQDs stock solutions of different concentrations were incorporated into TPS matrices in order to analyze the solid-state fluorescent properties and conductive properties of GQDs/TPS films. The fluorescent, conductive, morphological, mechanical, and optical properties of the GQDs/TPS films were characterized by ultraviolet-visible spectroscopy, surface resistance measurement, scanning electron microscopy, Fourier-transform infrared (FT-IR) spectroscopy, tensile testing, and X-ray diffraction (XRD). FT-IR studies indicated hydrogen bonding between the oxygen-containing groups on GQDs surfaces and the -OH groups in the TPS. The mechanical testing results showed the optimum GQDs loading of 10.9 wt% in the blend. XRD and TEM studies indicated uniform graphene dispersions in the TPS matrix for <= 10.9 wt% GQDs loading; further increases in loading caused agglomeration. The maximum photoluminescence intensity and conductivity of the materials were obtained at 10.9 wt% GQDs loading. These materials have potential applicability in flexible optoelectronic packaging materials. (C) 2019 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据