Epitaxial growth and morphological characteristics of isotactic polypropylene/polyethylene blends: Scale effect and mold temperature

2014 ◽  
Vol 34 ◽  
pp. 192-201 ◽  
Author(s):  
Peng Deng ◽  
Ben Whiteside ◽  
Feifei Wang ◽  
Keith Norris ◽  
Jie Zhang
Keyword(s):  
Epitaxial Growth ◽  
Scale Effect ◽  
Isotactic Polypropylene ◽  
Morphological Characteristics ◽  
Mold Temperature ◽  
Polyethylene Blends

Epitaxial growth of isotactic polypropylene on oriented polyethylene from solution

1991 ◽  
Vol 29 (6) ◽  
pp. 683-690 ◽  
Author(s):  
Akiyoshi Kawaguchi ◽  
Takumi Okihara ◽  
Syozo Murakami ◽  
Masayoshi Ohara ◽  
Ken-Ichi Katayama ◽  
...  
Keyword(s):  
Epitaxial Growth ◽  
Isotactic Polypropylene ◽  
Oriented Polyethylene

Nano-hybrid shish-kebab: Isotactic polypropylene epitaxial growth on electrospun polyamide 66 nanofibers via isothermal crystallization

2011 ◽  
Vol 65 (4) ◽  
pp. 653-656 ◽  
Author(s):  
Yanyan Liang ◽  
Guoqiang Zheng ◽  
Wenjuan Han ◽  
Chuntai Liu ◽  
Jingbo Chen ◽  
...  
Keyword(s):  
Epitaxial Growth ◽  
Isotactic Polypropylene ◽  
Isothermal Crystallization ◽  
Polyamide 66

Influence of scale effect and injection speed on morphology and structure of the microinjection molded isotactic polypropylene parts

2020 ◽  
Vol 31 (7) ◽  
pp. 1463-1473 ◽  
Author(s):  
Lixia Wang ◽  
Lin Jiang ◽  
Shuang Li ◽  
Yang Zhang ◽  
Dongfang Wang ◽  
...  
Keyword(s):  
Scale Effect ◽  
Isotactic Polypropylene ◽  
Injection Speed ◽  
Morphology And Structure

scholarly journals The Friction of Structurally Modified Isotactic Polypropylene

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7462
Author(s):  
Natalia Wierzbicka ◽  
Tomasz Sterzyński ◽  
Marek Nowicki
Keyword(s):  
Isotactic Polypropylene ◽  
Heterogeneous Nucleation ◽  
Total Content ◽  
Mold Temperature ◽  
Pimelic Acid ◽  
Reciprocating Motion ◽  
Shore Hardness ◽  
Β Phase ◽  
Forming Temperature ◽  
Injection Molded

The purpose of studies was to analyse an impact of heterogeneous nucleation of modified isotactic polypropylene (iPP) on its tribological properties. The iPP injection molded samples, produced by mold temperature of 20 and 70 °C, were modified with compositions of two nucleating agents (NA’s), DMDBS creating α-form and mixture of pimelic acid with calcium stearate (PACS) forming β–phase of iPP, with a total content 0.2 wt.% of NA’s. A polymorphic character of iPP, with both, monoclinic (α) and pseudo-hexagonal (β) crystalline structures, depending on the NA’s ratio, was verified. The morphology observation, DSC, hardness and tribological measurements as test in reciprocating motion with “pin on flat” method, were realized, followed by microscopic observation (confocal and SEM) of the friction patch track. It was found that Shore hardness rises along with DMBDS content, independent on mold temperature. The friction coefficient (COF) depends on NA’s content and forming temperature—for upper mold temperature (70 °C), its value is higher and more divergently related to NA’s composition, what is not the case by 20 °C mold temperature. The height of friction scratches and the width of patch tracks due to its plastic deformation, as detected by confocal microscopy, are related to heterogeneous nucleation modified structure of iPP.

Preparation of highly oriented single crystal arrays of C8-BTBT by epitaxial growth on oriented isotactic polypropylene

2020 ◽  
Vol 8 (6) ◽  
pp. 2155-2159
Author(s):  
Mingliang Li ◽  
Tingcong Jiang ◽  
Xiaoge Wang ◽  
Hongliang Chen ◽  
Shuo Li ◽  
...  
Keyword(s):  
Single Crystal ◽  
Epitaxial Growth ◽  
Single Crystals ◽  
Isotactic Polypropylene ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing ◽  
Oriented Single Crystal

Device arrays are fabricated with organic single crystals epitaxially grown on highly oriented iPP films by solvent vapor annealing.

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