期刊
JOURNAL OF POLYMER RESEARCH
卷 29, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1007/s10965-022-03211-2
关键词
PP-g-MAH; PE-g-MAH; Polypropylene random copolymer (PPR); Compatibility
资金
- Liaoning climbing scholar program
This study compares the thermodynamic and crystallization behavior of PPR blends with or without MAH-grafted PP and HDPE. The results show that the addition of a small amount of MAH-grafted polymer significantly enhances the crystallization temperature of the system.
Polypropylene/Polyethylene (PP/PE) incompatibility is the key factor that restricts the use of PE to further improve the performance of Polypropylene Random (PPR). Although there are many studies on PP/PE blends have been compatibilized by adding Maleic Anhydride (MAH) as a solubilizer, how MAH affects the crystal structure of PPR/PE blends has not been systematically investigated. This study compares the thermodynamic and crystallization behavior that adding of PPR and PPR blended with MAH-grafted PP and High-density polyethylene (HDPE). The addition of a small amount of (EP1:1)-MAH (MAH grafted PP/HDPE 1:1 blend) considerably enhanced the crystallization temperature of the system. Small-Angle X-ray Scattering (SAXS) confirmed that (EP1:1)-MAH has reduced the order of the lamellae structure of the PPR blend system compared with the addition of EP1:1 (ungrafted PP/PE 1:1 blend). MAH-grafted PE (PE-g-MAH) and MAH-grafted PP (PP-g-MAH) are compatible with PPR, thus allowing easy entry of PE into the phase region of PP and vice versa. By clarifying the crystal structure modification of PE/PPR blends, this study highlights the application potential of modifying PPR with the MAH-grafted polymer.
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