| Summary: | 碩士 === 國立臺北科技大學 === 有機高分子研究所 === 97 === In this study, organic environmental polymer (PLLA) and new-type textile polymer (PTT) and impact modifier MBS were melt-mixed in brabender. Thermal gravimetric (TGA) result shows the residue and weight lose temperature will improve with the increase of PTT and MBS. Differential scanning calorimetry(DSC) nonisothermal experiment can find PLA glass temperature were shift to low temperature when MBS added. PTT glass temperature and cold crystallization were disappear when MBS added. From isothermal-crystallization analysis, the crystallization rate of PTT were increase when MBS added. The value of Avrami exponent n has maximum when MBS was 5 phr. X-ray diffraction (XRD) observing the characteristic peaks growth and decline, showed that the degree of crystallinity of blend were descend when MBS added.
We also used scanning electron microscopy(SEM), polarized-light microscopy (POM) to observe the morphology of each blend. Under the POM, the results clearly show the different morphology of melt and cold crystallization. In PLA-rich blend,tensile strength were descrease and elongation increase when MBS added.In PTT-rich blend and PLA/PTT 50/50, tensile strength and elongation were both descrease when MBS added.
|
|---|
