基于非平衡现象的聚乳酸聚氧化乙烯复合材料梯度结构的自组织制备

李亚楠, 阎新萍, 曹新鑫, 杨佳, 李继功, 戴亚辉

李亚楠, 阎新萍, 曹新鑫, 等. 基于非平衡现象的聚乳酸聚氧化乙烯复合材料梯度结构的自组织制备[J]. 复合材料学报, 2014, 31(6): 1409-1415.
引用本文: 李亚楠, 阎新萍, 曹新鑫, 等. 基于非平衡现象的聚乳酸聚氧化乙烯复合材料梯度结构的自组织制备[J]. 复合材料学报, 2014, 31(6): 1409-1415.
LI Ya'nan, YAN Xinping, CAO Xinxin, et al. Self-organization preparation of poly (lactic acid) poly (ethylene oxide) composites with compositional gradient structure based on non-equilibrium phenomenon[J]. Acta Materiae Compositae Sinica, 2014, 31(6): 1409-1415.
Citation: LI Ya'nan, YAN Xinping, CAO Xinxin, et al. Self-organization preparation of poly (lactic acid) poly (ethylene oxide) composites with compositional gradient structure based on non-equilibrium phenomenon[J]. Acta Materiae Compositae Sinica, 2014, 31(6): 1409-1415.

基于非平衡现象的聚乳酸聚氧化乙烯复合材料梯度结构的自组织制备

基金项目: 河南省教育厅科学技术研究重点项目(13B430002);河南省高等学校矿业工程材料重点学科开放实验室开放基金(KLEM201215);河南理工大学博士基金(B2012-088)
详细信息
    通讯作者:

    戴亚辉, 博士, 副教授, 研究方向为聚合物共混改性、聚合物阶层材料的自组织与应用. E-mail:daiyahuixp@hpu.edu.cn

  • 中图分类号: TB324

Self-organization preparation of poly (lactic acid) poly (ethylene oxide) composites with compositional gradient structure based on non-equilibrium phenomenon

  • 摘要: 基于热力学非平衡现象,将聚乳酸(PLA)-聚氧化乙烯(PEO)-CHCl3溶液置于远离热力学平衡状态的开放系中干燥,自组织构筑了PLA-PEO复合体系内部的梯度相分离结构.通过偏光显微镜(POM)和衰减全反射傅里叶变换红外(ATR-FTIR)光谱对复合材料共混膜试样内部的梯度结构进行了表征.结果表明:在热力学非平衡状态下,复合体系内部形成了梯度结构;随着体系远离平衡状态,PLA富集在能量流出的空气侧,PEO则富集在能量流入的底部,膜的组成在能量流动方向上形成梯度分布,并随体系远离平衡状态呈增大的趋势,而热力学平衡状态是影响梯度结构形成的主要因素.
    Abstract: Based on thermodynamic non-equilibrium phenomenon, by setting the blend solution poly(lactic acid) (PLA)-poly(ethylene oxide)(PEO)-CHCl3 in the open system at non-equilibrium conditions to be dried, the compositional gradient phase-separation structures of internal PLA-PEO composites were successfully self-organized. The compositional gradient structure in the composite blend films was characterized by polarized optic microscopy (POM) and the attenuated total reflectance Fourier transformed infrared (ATR-FTIR) spectrum. It is found that the compositional gradient structure is formed in composite at thermodynamic non-equilibrium state. PLA concentrates at the air-side where the energy flows out while PEO at the bottom where the energy flows in, as the system is away from the equilibrium state. The composition of the resulted films distributes gradually along with energy movement direction and presents the tendency of increase with the system away from the equilibrium state. And thermodynamic equilibrium state is the major factor that affects the formation of compositional gradient structure.
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出版历程
  • 收稿日期:  2013-10-09
  • 修回日期:  2013-12-13
  • 刊出日期:  2014-12-14

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