Study on low temperature toughness and crystallization behavior of polypropylene random copolymer
-
Yingchun Li
,
Peng Yu
Abstract
This research designed a series of novel approaches aiming to tackle a long-standing problem that is the brittleness of polypropylene (PP) random copolymer (PPR) at low temperature. By introducing polyolefin elastomer (POE), the toughness of PPR was improved; talc improved the stiffness of PPR, low density polyethylene (LDPE) or high density PE (HDPE) improved the low temperature toughness of PPR, and annealing treatment also improved the low temperature toughness of PPR significantly. The addition of dicumyl peroxide (DCP) and triallyl isocyanurate (TAIC) increased its stiffness through the formation of cross-linking networks. Also, the crystallization behavior and morphology were investigated in detail. Differential scanning calorimetry (DSC) results indicated that the adoption of annealing treatment can improve the crystallinity of PPR, while a polarizing microscope revealed that the incorporation of foreign matter can facilitate the crystallization process of the matrix. X-ray diffraction (XRD) tests showed an unchanged polymorphic composition of PPR after introducing different additives, and scanning electron microscopy (SEM) indicated that annealing treatment can enhance interfacial interactions between the matrix and fillers.
Acknowledgments
The authors gratefully acknowledge The Science and Technology Project of Guangzhou (201508020090) for financial support.
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Articles in the same Issue
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Articles in the same Issue
- Frontmatter
- Original articles
- Stem cell culture on polyvinyl alcohol hydrogels having different elasticity and immobilized with ECM-derived oligopeptides
- Graphene oxide as a compatibilizer for polyvinyl chloride/rice straw composites
- Effect of hybrid-SiO2 particles on characterization of EPDM and silicone rubber composites for outdoor high-voltage insulations
- Properties of POB reinforced PTFE-based friction material for ultrasonic motors
- Fabrication, characterization, and application of polyester/wood flour composites
- Anisotropic mechanical properties of fused deposition modeled parts fabricated by using acrylonitrile butadiene styrene polymer
- Development of partial miscibility in polycarbonate/polypropylene blends via annealing
- Study on low temperature toughness and crystallization behavior of polypropylene random copolymer
- Steady flow and heat transfer analysis of MHD flow of Phan-Thien-Tanner fluid in double-layer optical fiber coating analysis with slip conditions
