【摘 要】
：
It is a challenge to identify each phase in a multi-component polymer system and uniquely determine the interfacial properties between the different phases.Usin
【机 构】
：
State Key Laboratory of Organic-Inorganic Composites & Beijing Advanced Innovation Center for Soft M
论文部分内容阅读
It is a challenge to identify each phase in a multi-component polymer system and uniquely determine the interfacial properties between the different phases.Using atomic force microscopy nanomechanical mapping (AFM-NM) and AFM-based infrared spectroscopy (AFM-IR),we identify each phase,visualize structural developments,and determine the interfacial properties in a blend of three polymers: high-density polyethylene (HDPE),polyamide (PA6) and poly(styrene-b-ethylene-co-butylene-b-styrene) (SEBS).Each phase can be identified from the Young's modulus,along with the structural development within the phases before and after compatibilization.The interfacial widths between HDPE/PA6,HDPE/SEBS and SEBS/PA6 were determined independently in one measurement from a Young's modulus map.The structural,mechanical property development and identity of the phases were determined by AFM-NM,while AFM-IR,providing complementary chemical information,identified interfacial reactions,showed the chemical affinity of a compatibilizer with the component phases,and mapped the distribution of the compatibilizer in the ternary polymer blends.The chemical,structural and interfacial information obtained by these measurements provide information that is essential for producing mechanically robust materials from incompatible mixtures of polymers.
其他文献
选用地-气系统辐射产品中的地表下行短波数据分析秦岭淮河地区辐射分量时间变化,得到如下结果:地表下行短波辐射年际变化整体呈下降趋势,分别在2002年7月和2004年9月发生显著下降;结合海洋尼诺指数对下行短波辐射进行相关分析,研究结果表明,2000-2016年间下行短波辐射发生突变的时间与厄尔尼诺事件发生的时间具有高度一致性,且辐射突变时间基本发生于厄尔尼诺事件的初期。同时下行短波辐射通量在发生厄尔
以《测绘地理信息》进入中国科学引文数据库(Chinese Science Citation Database,CSCD)核心库为契机,坚定办刊宗旨,提升编校质量,根据测绘学科发展趋势,实时跟踪学校一流学科课题组在各自融合学科的研究进展和创新成果,加大组稿力度,提出了《测绘地理信息》近期、中期目标质量提升方案,以期实现《测绘地理信息》的跨越式发展。
本文采用多型号旋翼无人机及挂载,运用倾斜摄影、贴近摄影等方法获取铁路特大桥梁主体及桥梁周边地势险峻区域环境的高分辨率、多角度影像;基于影像利用实景建模系统和云服务器实时地进行高精度实景三维模型生产;利用此类模型成果对特大桥的日常维护检查提供有效的数据支撑,弥补了现有检测手段的不足,提高了检查效率,降低人员风险。本文以云贵铁路南盘江特大桥为例,对上述技术方法进行探讨,对现有技术的不足和未来的发展进行
介绍了利用无人机平台上携带相机拍摄的风机影像,基于计算机视觉中的n点透视(perspective-n-point, PnP)问题提出一种利用无人机影像进行风机轮毂初步定位的方法。实验结果表明,该方法能够满足风机轮毂初步定位的要求,具有一定应用价值。
作为中国为数不多的自主研发的开源地图引擎,Maptalks以其优良的性能和灵活的插件构建方式,在越来越多的项目中得以应用。鉴于其正处于稳步开发的阶段,部分功能还不够完善,还未实现实际项目中的草图绘制编辑所需的捕捉功能。针对此问题,开发了基于Maptalks的捕捉插件,实现了地图编辑中的捕捉功能。此成果一方面满足了外业草图绘制简单捕捉编辑的需求,另一方面完善了Maptalks的功能,扩大了它的应用范
针对界址点坐标交换格式转换中常出现的点重复、未闭合、区无序等属性与格式问题,基于AutoCAD平台,结合图形对象属性列表元素,采用Visual LISP编程,将图形对象的质量检查与数据生产结合起来,改进了坐标交换格式文件的转换方法。实际结果表明,该方法不仅能避免数据格式排列出错,还能消除因属性错误而衍生的问题,提高了数据质量检查及生产的效率。
基于地理市情成果数据,以城市高危仓储分布和监测为例,研究了影响城市安全的城市危化品企业的定位与分布;采用层次分析法建立了危化品企业同周边敏感源的危险等级评价模型,对危化品企业的危险等级进行动态评估监测;建议将风险治理融入上海市精细化城市建设和管理的全过程,提升超大城市的风险防控力,从而提升城市韧性。
Phototherapies including photodynamic therapy (PDT) and photothermal therapy (PTF) are the most promising and non-invasive cancer treatments.However,the efficac
The isoselective ring-opening polymerization of racemic lactide was achieved by combining N-heterocyclic olefin (NHO) with mono(thio)ureas or bis(thio)ureas as
The synthesis of block copolymers of poly(tetrahydrofuran)-b-poly(a-amino acid) (PTHF-b-PAA) is challenging since it is difficult to combine the two blocks prod