Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation

被引：23

作者：

Christoefl, Petra ^{[1
]}

Czibula, Caterina ^{[2
,4
]}

Berer, Michael ^{[1
]}

Oreski, Gernot ^{[1
]}

Teichert, Christian ^{[2
]}

Pinter, Gerald ^{[3
]}

机构：

[1] Polymer Competence Ctr Leoben, Roseggerstr 12, A-8700 Leoben, Austria

[2] Univ Leoben, Inst Phys, Franz Josef Str 18, A-8700 Leoben, Austria

[3] Univ Leoben, Chair Mat Sci & Testing Polymers, Otto Glockl Str 2, A-8700 Leoben, Austria

[4] Graz Univ Technol, Christian Doppler Lab Fiber Swelling, Infeldgasse 23, A-8010 Graz, Austria

来源：

POLYMER TESTING | 2021年 / 93卷 / 93期

关键词：

Nanoindentation; Amorphous; Creep; AFM; Compression test; NANOSCALE MECHANICAL CHARACTERIZATION; ATOMIC-FORCE MICROSCOPE; NANO-INDENTATION; CREEP; POLYMERS; HARDNESS; LOAD;

D O I：

10.1016/j.polymertesting.2020.106978

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Instrumented nanoindentation (NI) was used to examine the viscoelastic properties of poly(methyl methacrylate) (PMMA) as an amorphous polymer model. An evaluation combining adhesive contact and empiric spring-dashpot models has been applied to obtain the instantaneous elastic modulus E-0 and the infinitely elastic modulus E-infinity from nanoindentation creep curves. The value of E-0 has been compared to moduli obtained with atomic force microscopy-based nanoindentation (AFM-NI) and compression tests. Furthermore, the elastic modulus has been evaluated by the method introduced by Oliver and Pharr (O&P) for the NI and AFM-NI results. Comparison of the elastic modulus E-0 from the creep measurements of NI and AFM-NI to compression tests reveals good agreement of the results. However, only the O&P based AFM-NI results yield to lower values.

引用

页数：9

共 41 条

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