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Investigations on structure and Properties of Blends of Polypropylene with Polyamide 1010 by Rayleigh Scattering

Chinese Journal of polymer Science 2014年第4期32卷 411-423页

作者：马桂秋 Xiong-wu Deng Ding-hao Zhang Jing Sheng School of Materials Science and Engineering Tianjin University

The phase structure and morphology of polypropylene （iPP） blends with poly（decamethylene sebacamide （polyamide 1010, PA 1010） and the part-compatible alloys （iPP/PA 1010/iPP-g-MAH） are investigated by Rayleigh scattering, i.e. small angle light scattering （SALS）. The structure parameters of SALS, i.e. correlation distance, ac and average chord lengths, /, are calculated. Their variation with the composition of the blends and alloys is discussed. The morphology and structure of fracture surfaces in the blends and alloys are studied by SEM images. The average diameter of dispersed phase in the blends and alloys is calculated by graph processing. The variation of average diameter is similar as that of average chord lengths of dispersed phases. The mechanical properties of the blends and alloys are analyzed and the relation of modulus and yield stress with the composition is studied. It is confirmed that the correlation between the modulus and the structure parameters is non-linear, while the correlation between the yield stress and the composition or structure parameters is linear.

关键词： polymer alloys polymer structure polymer properties.

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Molecular Motions in polymer Matrix for Microenvironment Sensing

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Chemical Research in Chinese Universities 2021年第1期37卷 90-99页

作者： GAO Mengyue CHENG Yanhua ZHANG Junyan XU Chengjian YU Xiaoxiao ZHU Meifang State Key Laboratory for Modification of Chemical Fibers and polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620P.R.China

polymer science entails the structural study at multi-levels from nano-to micro-and mesoscale,which is highly important to transfer or even amplify the molecular information to macroscopic *** polymer structural transitions from lower-order to higher-order superstructures are normally involved to achieve selective,efficient and sophisticated ***,in-situ visualization of these processes is highly important,not only for fundamental understanding the structural evolution,but also for the optimization of the process flow during the materials *** imaging based on aggregation-induced emission(AIE)provides an ideal tool that offers a simple,accurate,and easy-readable method to fulfill the above *** to the twisted propeller-like structure of AIE luminogens(AIEgens),they show high fluorescence sensitivity to the surrounding microenvironment(e.g.,viscosity,rigidity,and polarity)through intramolecular *** this short review,we summarize the recent applications of AIEgens to serve as“built-in”sensors to analyze the process of polymerization,microphase separation,glass/vitrification transition,polymer solvation,crystallization,*** perspective on the future application of AIE technology in polymer engineering,especially fiber materials,is also discussed.

关键词： Aggregation-induced emission(AIE) Intramolecular motion polymer structure polymer microenvironment Visualization

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