| 초록 |
Poly (trimethylene terephthalate) (PTT) was recently introduced as a new material that has a high potential to be used as an engineering plastic, barrier films and packing. In this study, the surface effect on the crystal orientation of cold crystallized poly(trimethylene terephthalate) was investigated using temperature-controlled RA-FTIR and synchrotron-source GIXRD measurements. Microscopic orientation changes were measured as a function of temperature using RA-FTIR spectroscopy. Macroscopic crystalline structures were observed by grazing incidence x-ray diffraction with synchrotron x-ray source and 2-dimensional detector. By comparing the results from these two techniques, surface-induced crystal orientation of poly(trimethylene terephthalate) has been studied. Furthermore, the thickness dependence of crystal orientation was also evaluated. |
