Creep compliance mapping by atomic force microscopy

被引：30

作者：

Braunsmann, Christoph ^{[1
,2
]}

Proksch, Roger ^{[3
]}

Revenko, Irene ^{[3
]}

Schaeffer, Tilman E. ^{[1
,2
]}

机构：

[1] Univ Tubingen, Inst Appl Phys, D-72076 Tubingen, Germany

[2] Univ Tubingen, LISA, D-72076 Tubingen, Germany

[3] Asylum Res, Oxford Instruments Co, Santa Barbara, CA 93117 USA

来源：

POLYMER | 2014年 / 55卷 / 01期

关键词：

Nanoindentation; Viscoelasticity; Double step loading; VISCOELASTIC PROPERTIES; NANOINDENTATION; POLYMERS; INDENTATION;

D O I：

10.1016/j.polymer.2013.11.029

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We present a method for mapping the spatial distribution of viscoelastic properties of heterogeneous samples using the atomic force microscope (AFM). By applying a force step load protocol to induce time dependent sample indentations we measured the local creep compliance of the sample. The creep compliance was quantified in terms of the standard linear solid model to give maps of the instant glassy modulus, the equilibrium rubbery modulus, and the retardation time. To reduce the influence of plastic deformations, the sample was preformed with an initial preload step. Different polymer samples with a homogeneous or a heterogeneous material composition on a microscopic scale were investigated. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：219 / 225

页数：7

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