Phase identification and interfacial transitions in ternary polymer blends by ToF-SIMS

被引:20
作者
Ravati, Sepehr [1 ]
Poulin, Suzie [2 ]
Piyakis, Konstantinos [2 ]
Favis, Basil D. [1 ]
机构
[1] Ecole Polytech, Dept Chem Engn, CREPEC, Montreal, PQ H3C 3A7, Canada
[2] Ecole Polytech, Dept Engn Phys, Montreal, PQ H3C 3A7, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
Interfacial transition; Morphology; ToF-SIMS; PRINCIPAL COMPONENT ANALYSIS; ION MASS-SPECTROMETRY; MULTIVARIATE-ANALYSIS; THIN-FILMS; POLY(ETHYLENE-TEREPHTHALATE); QUANTIFICATION; SPECTRA; INFORMATION; PARAMETERS; SURFACES;
D O I
10.1016/j.polymer.2014.09.013
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Phase identification and the study of the interphase region in multi-component polymer blends with a chemically similar structure using conventional techniques is a challenge. In this work, the detailed morphological analysis of such systems is examined. A ternary blend comprised of poly butylene succinate (PBS); poly lactic acid (PLA); and polycaprolactone (PCL) with a partial wetting morphology is carefully selected since all three components are polyesters with low interfacial tensions. It will be shown that a novel technique by applying multivariate analysis (MVA) on time-of-flight secondary ion mass spectrometry (ToF-SIMS) data can effectively identify the complex phase structure, especially in blends with chemically similar components. Furthermore, for the first time for such systems, this technique provides detailed information about interfacial thicknesses and transitions. By employing the principal component analysis (PCA) method on the ToF-SIMS data of pure polymers, specific peaks with a certain molecular ion mass related to each polymer are determined. Using overlaid mappings on the surface of the blend by ToF-SIMS and selected ion masses to identify each polymer results in the differentiation of the various phases represented as a morphological image. In a second step, the multivariate curve resolution (MCR) method is used as a "self modeling curve resolution" for the recovery of pure components from a multi-component mixture when little or no prior information is available. Total pseudo-color RGB images of PBS/PLA/PCL show that PIA droplets unambiguously partially wet the PBS and PCL phases. Since each pixel from the analysis in the high lateral resolution image represents a 200 nm diameter, the interfacial transitions can also be studied for both PLA/PBS and PLA/PCL interfaces. The results show the concentration variation of phases across the interfaces. A complete trace line across the two interfaces (PLA/PBS and PLA/PCL) allows for the quantitative determination of interfacial thickness for the first time for such systems. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:6110 / 6123
页数:14
相关论文
共 41 条
  • [1] Beebe K.R., 1998, CHEMOMETRICS PRACTIC
  • [2] Time-of-flight secondary ion mass spectrometry: techniques and applications for the characterization of biomaterial surfaces
    Belu, AM
    Graham, DJ
    Castner, DG
    [J]. BIOMATERIALS, 2003, 24 (21) : 3635 - 3653
  • [3] CHEMICAL-ANALYSIS OF INORGANIC AND ORGANIC-SURFACES AND THIN-FILMS BY STATIC TIME-OF-FLIGHT SECONDARY-ION MASS-SPECTROMETRY (TOF-SIMS)
    BENNINGHOVEN, A
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1994, 33 (10): : 1023 - 1043
  • [4] Principal component analysis of TOF-SIMS images of organic monolayers
    Biesinger, MC
    Paepegaey, PY
    McIntyre, NS
    Harbottle, RR
    Petersent, NO
    [J]. ANALYTICAL CHEMISTRY, 2002, 74 (22) : 5711 - 5716
  • [5] Briggs D, 1999, POLYM INT, V48, P244
  • [6] PLA-PMMA blends: A study by XPS and ToF-SIMS
    Cossement, D.
    Gouttebaron, R.
    Cornet, V.
    Viville, P.
    Hecq, M.
    Lazzaroni, R.
    [J]. APPLIED SURFACE SCIENCE, 2006, 252 (19) : 6636 - 6639
  • [7] Chemometrics applied to unravel multicomponent processes and mixtures - Revisiting latest trends in multivariate resolution
    de Juan, A
    Tauler, R
    [J]. ANALYTICA CHIMICA ACTA, 2003, 500 (1-2) : 195 - 210
  • [8] Eynde XV, 1997, SURF INTERFACE ANAL, V25, P878, DOI 10.1002/(SICI)1096-9918(199710)25:11<878::AID-SIA311>3.0.CO
  • [9] 2-C
  • [10] Quantification issues in ToF-SSIMS and AFM co-analysis in two-phase systems, exampled by a polymer blend
    Gilmore, IS
    Seah, MP
    Johnstone, JE
    [J]. SURFACE AND INTERFACE ANALYSIS, 2003, 35 (11) : 888 - 896