Nanoindentation and nanoscratch testing of uniaxially and biaxially drawn poly(ethylene terephthalate) film
โ Scribed by B.D. Beake; G.J. Leggett
- Book ID
- 108366527
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 169 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0032-3861
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## Abstract The dependency of the mechanical properties (Young's modulus, yield strength, breaking strain, and breaking energy) of preoriented poly(ethylene terephthalate) (PET) sheets on the tensile deformation speeds was examined and discussed in relation to changes of density and birefringence.
Two-dimensional magic angle spinning (2D-MAS) =3C n.m.r, spectroscopy and FTi.r. microscopy have been used to measure the orientation in uniaxially drawn film as a function of draw ratio. Results obtained agree well with those obtained by optical birefringence measurements. FTi.r. microscopy is a po