Non-destructive characterisation of all-polypropylene composites using small angle X-ray scattering and polarized Raman spectroscopy

被引：8

作者：

Bocz, Katalin ^{[1
]}

Decsov, Kata Eniko ^{[1
]}

Farkas, Attila ^{[1
]}

Vadas, Daniel ^{[1
]}

Barany, Tarnas ^{[2
]}

Wacha, Andras ^{[3
]}

Bota, Attila ^{[3
]}

Marosi, Gyorgy ^{[1
]}

机构：

[1] Budapest Univ Technol & Econ, Dept Organ Chem & Technol, Muegyet Rkp 3, H-1111 Budapest, Hungary

[2] Budapest Univ Technol & Econ, Dept Polymer Engn, Muegyet Rkp 3, H-1111 Budapest, Hungary

[3] Hungarian Acad Sci, Inst Mat & Environm Chem, Magyar Tudosok Krt 2, H-1117 Budapest, Hungary

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2018年 / 114卷

基金：

匈牙利科学研究基金会;

关键词：

Polymer fibres; Polymer-matrix composites (PMCs); Mechanical properties; Non-destructive testing; MECHANICAL-PROPERTIES; ISOTACTIC POLYPROPYLENE; HOT COMPACTION; MOLECULAR-ORIENTATION; POLYMER COMPOSITES; FIBERS; TAPES;

D O I：

10.1016/j.compositesa.2018.08.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Small angle X-ray scattering (SAXS) and polarized Raman spectroscopy were used to examine the structure of unidirectional all-polypropylene composites prepared at different consolidation temperatures. Analysis of the anisotropy of the X-ray scattering pattern provided a way to quantify the disorientation of the crystallites and a direct correlation has been found between a measure of overall orientation and the Young's modulus of the composites. In the case of the Raman spectroscopic measurements, the molecular orientation state of the reinforcing PP fibres were evaluated by classical least squares (CLS) modelling with real reference spectra. Strong correlation was evinced between the estimated relative degree of orientation of the reinforcing fibres and the Young's modulus of the multi-layered all-polypropylene composites. Based on these results, both SAXS and Raman spectroscopy are suitable methods to predict the mechanical performance of all-polymer composites, being especially sensitive to manufacturing and application conditions, in a non-destructive way.

引用

页码：250 / 257

页数：8

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