Crystallization and phase morphology of injection-molded isotactic polypropylene (iPP)/syndiotactic polypropylene (sPP) blends

2007 ◽  
Vol 45 (21) ◽  
pp. 2948-2955 ◽  
Author(s):  
Xiao-Xuan Zou ◽  
Wei Yang ◽  
Guo-Qiang Zheng ◽  
Bang-Hu Xie ◽  
Ming-Bo Yang
Keyword(s):  
Isotactic Polypropylene ◽  
Phase Morphology ◽  
Syndiotactic Polypropylene ◽  
Injection Molded

scholarly journals Evolution of cellular morphologies and crystalline structures in high-expansion isotactic polypropylene/cellulose nanofiber nanocomposite foams

RSC Advances ◽  
2018 ◽  
Vol 8 (28) ◽  
pp. 15405-15416 ◽  
Author(s):  
Long Wang ◽  
Yuta Hikima ◽  
Masahiro Ohshima ◽  
Takafumi Sekiguchi ◽  
Hiroyuki Yano
Keyword(s):  
Isotactic Polypropylene ◽  
Cell Morphology ◽  
Cellulose Nanofiber ◽  
Crystalline Structures ◽  
Nanocomposite Foams ◽  
Injection Molded ◽  
Crystalline Microstructure

The development of cell morphology and crystalline microstructure of high expansion injection-molded isotactic polypropylene/cellulose nanofiber (PP/CNF) nanocomposite foams was understood.

Shear-induced fibrillation and resultant mechanical properties of injection-molded polyamide 1010/isotactic polypropylene blends

2011 ◽  
Vol 60 (11) ◽  
pp. 1655-1662 ◽  
Author(s):  
Run Su ◽  
Kun Jiang ◽  
Yao Ge ◽  
Shanwei Hu ◽  
Zhen Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Isotactic Polypropylene ◽  
Injection Molded ◽  
Polypropylene Blends ◽  
Polyamide 1010

Influence of Morphology on Electrical Properties of Syndiotactic Polypropylene Compared with Those of Isotactic Polypropylene

1999 ◽  
Vol 38 (Part 1, No. 6A) ◽  
pp. 3580-3584 ◽  
Author(s):  
Dong Wook Kim ◽  
Katsumi Yoshino ◽  
Takeo Inoue ◽  
Masaru Abe ◽  
Nobutaka Uchikawa
Keyword(s):  
Electrical Properties ◽  
Isotactic Polypropylene ◽  
Syndiotactic Polypropylene

Unusual hierarchical distribution of β-crystals and improved mechanical properties of injection-molded bars of isotactic polypropylene

RSC Advances ◽  
2014 ◽  
Vol 4 (48) ◽  
pp. 25135-25147 ◽  
Author(s):  
Long Wang ◽  
Ming-Bo Yang
Keyword(s):  
Mechanical Properties ◽  
Isotactic Polypropylene ◽  
Injection Molded

Shish-kebab and β-cylindrite morphology were observed simultaneously in the GAIM iPP part, which showed greatly improved mechanical properties.

scholarly journals Effect of Quinacridone Pigments on Properties and Morphology of Injection Molded Isotactic Polypropylene

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Mateusz Barczewski ◽  
Danuta Matykiewicz ◽  
Bartłomiej Hoffmann
Keyword(s):  
Isotactic Polypropylene ◽  
Morphological Changes ◽  
Hexagonal Phase ◽  
Impact Resistance ◽  
Polymeric Materials ◽  
Hardness Test ◽  
Thermomechanical Properties ◽  
Scanning Calorimetry ◽  
Nucleation Behavior ◽  
Injection Molded

Two quinacridone pigments were added (0.01; 0.05; 0.1; 0.5; 1; 2 wt%) to isotactic polypropylene (iPP), and their influence on mechanical and thermomechanical properties were investigated. Complex mechanical and thermomechanical iPP properties analyses, including static tensile test, Dynstat impact resistance measurement, and hardness test, as well as dynamic mechanic thermal analysis (DMTA), were realized in reference to morphological changes of polymeric materials. In order to understand the differences in modification efficiency and changes in polymorphism of polypropylene matrix caused by incorporation of pigments, differential scanning calorimetry (DSC) and wide-angle X-ray scattering (WAXS) experiments were done. Both pigments acted as highly effective nucleating agents that influence morphology and mechanical properties of isotactic polypropylene injection molded samples. Differences between polypropylene samples nucleated by two pigments may be attributed to different heterogeneous nucleation behavior dependent on pigment type. As it was proved by WAXS investigations, the addition of γ-quinacridone (E5B) led to crystallization of polypropylene in hexagonal phase (β-iPP), while for β-quinacridone (ER 02) modified polypropylene no evidence of iPP β-phase was observed.

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