Effect of functionalization on non-isothermal crystallization behavior of polypropylene |
| |
Authors: | Xu-Feng Xia Jun-Hui Zhang Jia-Ming Fan Qian-Lu Jiang |
| |
Affiliation: | School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China |
| |
Abstract: | The non-isothermal crystallization kinetics of three functionalized polypropylenes (PPs; polypropylenes-g-acrylic acid [PP-g-AA], polypropylenes-g-glycidyl methacrylate [PP-g-GMA], polypropylenes-g-maleic anhydride [PP-g-MAH]) at different cooling rates were investigated by differential scanning calorimetry, using the Jeziorny method, Ozawa method, and Mo method. The result showed that Mo method can adequately describe the non-isothermal crystallization kinetics of pure PP and functionalized PPs, and at a given relative crystallinity, the crystallization rate obtained using Mo method followed an order of PP-g-AA > PP-g-GMA > PP > PP-g-MAH. The crystallization activation energy for these samples was calculated using Kissinger's method, which indicated that the introduction of monomers had a confinement effect on the motion of PP chains. |
| |
Keywords: | Functionalized polypropylene grafting non-isothermal crystallization polypropylene |
|
|