A study of tensile modulus and molecular orientation in drawn and shrunk poly(ethylene terephthalate) combining refractive index, polarized fluorescence, and X-ray diffraction measurements

1983 ◽  
Vol 28 (3) ◽  
pp. 1195-1206 ◽  
Author(s):  
D. I. Bower ◽  
K. K. P. Korybut-Daszkiewicz ◽  
I. M. Ward
Keyword(s):  
Refractive Index ◽  
Molecular Orientation ◽  
Ethylene Terephthalate ◽  
Tensile Modulus ◽  
X Ray Diffraction ◽  
Polarized Fluorescence ◽  
X Ray ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Modifying the surface of poly(ethylene terephthalate) nanofibrous materials by alkaline treatment and TiO2 nanoparticles

2017 ◽  
Vol 47 (8) ◽  
pp. 1944-1958 ◽  
Author(s):  
Ali Karimi ◽  
Hossein Izadan ◽  
Akbar Khoddami ◽  
Seyed A Hosseini
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Alkaline Hydrolysis ◽  
Ethylene Terephthalate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Poly Ethylene Terephthalate ◽  
Dye Absorption ◽  
Poly Ethylene ◽  
Scanning Electron

The mutual effects of nano-TiO2 and alkaline hydrolysis on the morphology, chemical structure, water absorption, and the dyeing behavior of poly(ethylene terephthalate) nanofibers were investigated via employing scanning electron microscope, Fourier Transform Infra Red Spectroscopy (FTIR) and X-ray diffraction, and measuring water contact angle, 3M repellency, and dye absorption. A direct relation between the alkaline hydrolysis rate and nanofibers hydrophilicity was observed, while the addition of the nano-TiO2 led to more hydrophobicity. However, the alkaline hydrolysis had the prominent effect. FTIR spectra illustrated no chemical interaction between the nanoparticles and nanofibers. It was also shown that the dye absorption at dyeing equilibrium and the rate of dyeing were increased by the presence of the nano-TiO2 and these effects were intensified by the alkaline hydrolysis. These observations were related to the reduction in the nanofibers diameter and the increase in the surface roughness, as evidenced in the scanning electron microscope, and the increase in the amorphous regions of the nanofibers, as shown by the X-ray diffraction diffractograms.

In Situ High Temperature X-Ray Diffraction Studies of Modified Poly(Ethylene Terephthalate)

1992 ◽  
Vol 36 ◽  
pp. 379-386
Author(s):  
T. Blanton ◽  
R. Seyler
Keyword(s):  
High Temperature ◽  
Ethylene Terephthalate ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
X Ray Scattering ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Pet Crystallization

The effect of dimethyl-5-sodiosulfoisophthalate, SIP, on poly(ethylene terephthalate), PET, crystallization has been studied using in situ high-temperature x-ray diffraction, HTXRD. At low levels of SIP modification, PET-like crystallinity was observed. At high SIP levels, clustering of polyester ionomers was observed and crystallization was significantly suppressed. The HTXRD data along with differential scanning calorimetry, DSC, and small angle x-ray scattering, SAXS, indicate that the change from bulk crystallization to bulk ionomer formation occurred when 8-12 mol% of the diester linkages contained SIP.

scholarly journals Molecular orientation by means of birefringence and polarized fluorescence in orthogonal biaxially stretched poly(ethylene terephthalate) films.

1988 ◽  
Vol 45 (5) ◽  
pp. 383-390 ◽  
Author(s):  
Sadao HIBI ◽  
Makoto SATOH ◽  
Akira TANAKA ◽  
Yuuji TORASAWA ◽  
Masayuki MAKIHARA ◽  
...  
Keyword(s):  
Molecular Orientation ◽  
Ethylene Terephthalate ◽  
Polarized Fluorescence ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
Sign in / Sign up

Export Citation Format

Share Document