scholarly journals Characterization of the Microstructure of Poly(propylene oxide)–Segmented Polyamide and Its Suppression of Platelet Adhesion

1984 ◽  
Vol 16 (2) ◽  
pp. 119-128 ◽  
Author(s):  
Nobuhiko Yui ◽  
Junko Tanaka ◽  
Kohei Sanui ◽  
Naoya Ogata ◽  
Kazunori Kataoka ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Platelet Adhesion ◽  
Poly Propylene

scholarly journals Fabrication and characterization of the ternary composite catalyst system of ZnGA/RET/DMC for the terpolymerization of CO2, propylene oxide and trimellitic anhydride

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8782-8792
Author(s):  
Ningzhang Liu ◽  
Chuanhai Gu ◽  
Qinghe Wang ◽  
Linhua Zhu ◽  
Huiqiong Yan ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Ternary Complex ◽  
Catalyst System ◽  
Composite Catalyst ◽  
Trimellitic Anhydride ◽  
Ternary Composite ◽  
Metal Cyanide ◽  
Fabrication And Characterization ◽  
Poly Propylene

For poly(propylene carbonate trimellitic anhydride) with good yield, thermal stability and high molecular weight, a catalyst of zinc glutarate/rare earth ternary complex/double metal cyanide was used for terpolymerization of CO2, propylene oxide and trimellitic anhydride.

Effect of microstructure of poly(propylene-oxide)-segmented polyamides on platelet adhesion

1986 ◽  
Vol 20 (7) ◽  
pp. 929-943 ◽  
Author(s):  
Nobuhiko Yui ◽  
Kohei Sanui ◽  
Naoya Ogata ◽  
Kazunori Kataoka ◽  
Teruo Okano ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Platelet Adhesion ◽  
Poly Propylene ◽  
Effect Of Microstructure

Synthesis and characterization of degradable triarm low unsaturated poly(propylene oxide)-block-polylactide copolymers

2010 ◽  
pp. n/a-n/a
Author(s):  
Dongmei Yang ◽  
Qi Lu ◽  
Zhongyong Fan ◽  
Suming Li ◽  
Jianjun Tu ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Synthesis And Characterization ◽  
Poly Propylene

Dispersion and improvement of organoclays in nanocomposites based on poly(propylene oxide)

2020 ◽  
pp. 089270572093917 ◽  
Author(s):  
Lahouari Mrah ◽  
Rachid Meghabar
Keyword(s):  
Electron Microscopy ◽  
Propylene Oxide ◽  
Clay Nanocomposites ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Transmission Electron ◽  
The Matrix ◽  
Organic Clay ◽  
Poly Propylene

This work is mainly concentrated on the preparation and characterization of poly(propylene oxide) (PPO)/organic clay nanocomposites. The effects of the nature of organoclays and the method of preparation have been elucidated to evaluate their morphological, structural and thermal properties. These nanocomposites were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, thermal analysis (differential scanning calorimetry) and thermogravimetric analysis (TGA). This study involved the use of an Algerian clay called ‘maghnite’ which was modified by an incorporation method using different concentrations of the surfactant cetyltrimethylammonium bromide (CTAB). Propylene oxide (PO) was polymerized in the presence of ethylene glycol and various proportions of organic clay ranging from 1%, 5% and 10% by weight. The structural study by XRD showed, at different loading rates of maghnite and PO in the preparation of PPO/maghnite nanocomposites, different morphologies: intercalated/exfoliated blend and intercalated/agglomerated. TGA showed that the intercalation of PPO at the montmorillonite (MMT)-CTA interface would be more advantageous since the required amount of 5% organic clay (by weight) ensures high thermal stability of the nanocomposites, and the glass transition temperature ( T g) of PPO/MMT nanocomposites is higher than that of PPO since this increase is due to the introduction of clay into the matrix which makes the nanocomposite more rigid.

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