Development and Characterization of Polyolefin Blend-based Nanocomposites

• Main Authors: Cheng En Lee, 李承恩
• Other Authors: F. C. Chiu
• Format: Others
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/76661288825414442125

碩士 === 長庚大學 === 化工與材料工程學系 === 98 === In this study, PP/LDPE blend-based nanocomposites were prepared through a twin-screw extruder. An Organoclay (15A) and an EPDM-MA copolymer served as the nano-filler and compatibilizer, respectively. Two grades of PP with different viscosities were selected to be the composites’ main matrix. The influence of PP viscosity on the preparation and properties of the composites was investigated. XRD and TEM results confirm that EPDM-MA facilitated the dispersibility of 15A in the polymer matrix. SEM results show that adding EPDM-MA reduced the domain size of dispersed LDPE phase. DSC and PLM results indicate that 15A retarded the crystallizability of PP, whereas 15A affected hardly the crystallization of LDPE. TGA results show that the thermal stability of PP/PE blends was enhanced after adding 15A and/or EPDM-MA. Rheological properties investigation reveals that the influence of PP viscosity on the measured properties was negligible due to the synergistic effect from inclusions of 15A and EPDM-MA in the composites.