Crystalline Structure of Injection Molded β-Isotactic Polypropylene: Analysis of the Oriented Shear Zone

2013 ◽  
Vol 52 (34) ◽  
pp. 11996-12002 ◽  
Author(s):  
Xianhu Liu ◽  
Kun Dai ◽  
Xiaoqiong Hao ◽  
Guoqiang Zheng ◽  
Chuntai Liu ◽  
...  
Keyword(s):  
Shear Zone ◽  
Crystalline Structure ◽  
Isotactic Polypropylene ◽  
Injection Molded

scholarly journals Direct correlation between modulus and the crystalline structure in isotactic polypropylene

2015 ◽  
Vol 9 (3) ◽  
pp. 308-320 ◽  
Author(s):  
A. Menyhard ◽  
P. Suba ◽  
Zs. Laszlo ◽  
H. M. Fekete ◽  
A. O. Mester ◽  
...  
Keyword(s):  
Crystalline Structure ◽  
Isotactic Polypropylene

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.

Crystalline structure and remarkably enhanced tensile property of β-isotactic polypropylene via overflow microinjection molding

2019 ◽  
Vol 76 ◽  
pp. 448-454 ◽  
Author(s):  
Zhongzhu Liu ◽  
Xianhu Liu ◽  
Lele Li ◽  
Guoqiang Zheng ◽  
Chuntai Liu ◽  
...  
Keyword(s):  
Tensile Property ◽  
Crystalline Structure ◽  
Isotactic Polypropylene ◽  
Microinjection Molding

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

Analysis of crystalline structure and morphology of isotactic polypropylene under the coexistence of organic montmorillonite particles and shear flow

Polymer ◽  
2016 ◽  
Vol 82 ◽  
pp. 274-284 ◽  
Author(s):  
Fan Lei ◽  
Huaning Yu ◽  
Shuo Yang ◽  
Huimin Sun ◽  
Jiang Li ◽  
...  
Keyword(s):  
Shear Flow ◽  
Crystalline Structure ◽  
Isotactic Polypropylene ◽  
Structure And Morphology ◽  
Organic Montmorillonite

Shear-induced epitaxial crystallization in injection-molded bars of high-density polyethylene/isotactic polypropylene blends

Polymer ◽  
2007 ◽  
Vol 48 (15) ◽  
pp. 4529-4536 ◽  
Author(s):  
Run Su ◽  
Ke Wang ◽  
Ping Zhao ◽  
Qin Zhang ◽  
Rongni Du ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
High Density Polyethylene ◽  
High Density ◽  
Epitaxial Crystallization ◽  
Injection Molded ◽  
Polypropylene Blends

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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