

FOLLOWUS
a.State Key Laboratory of Organic−Inorganic Composites & Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
b.Polymer Science and Engineering Department, University of Massachusetts Amherst, Massachusetts 01003, United States
c.Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
dwang@mail.buct.edu.cn
Received:22 November 2020,
Revised:2021-2-3,
Accepted:11 February 2021,
Online First:16 March 2021,
Published:15 April 2021
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Li, H. X.; Russell, T. P.; Wang, D. Nanomechanical and chemical mapping of the structure and interfacial properties in immiscible ternary polymer systems. Chinese J. Polym. Sci. 2021, 39, 651–658
Hao-Xuan Li, Thomas P. Russell, Dong Wang. Nanomechanical and Chemical Mapping of the Structure and Interfacial Properties in Immiscible Ternary Polymer Systems[J]. Chinese Journal of Polymer Science, 2021, 39(6): 651-658.
Li, H. X.; Russell, T. P.; Wang, D. Nanomechanical and chemical mapping of the structure and interfacial properties in immiscible ternary polymer systems. Chinese J. Polym. Sci. 2021, 39, 651–658 DOI: 10.1007/s10118-021-2567-2.
Hao-Xuan Li, Thomas P. Russell, Dong Wang. Nanomechanical and Chemical Mapping of the Structure and Interfacial Properties in Immiscible Ternary Polymer Systems[J]. Chinese Journal of Polymer Science, 2021, 39(6): 651-658. DOI: 10.1007/s10118-021-2567-2.
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.
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