Polypropylene + Polystyrene Blends with a Compatibilizer. Part I. Morphology and Thermophysical Properties

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Witold Brostow ◽  
Tamara Holjevac Grguric ◽  
Oscar Olea-Mejia ◽  
Vesna Rek ◽  
Jaykumar Unni

AbstractVarious concentrations of polypropylene (PP) and polystyrene (PS) blends were prepared with styrene-ethylene/butylene-styrene block copolymer (SEBS) added as a compatibilizer between the two main polymers. We have investigated the effect of SEBS on processing, morphology and thermophysical properties of the blends. The compatibilizing agent improves the blend morphology since smaller particles of the dispersed PS phase in the PP matrix blends are obtained; adding more than 5 % SEBS has no further effect on the blends. The presence of SEBS lowers the crystallinity of the PP-rich phase - as reflected in the enthalpy of fusion and also in the enthalpy of crystallization.

2021 ◽  
Vol 899 ◽  
pp. 434-439
Author(s):  
Khasan V. Musov ◽  
Aslanbek F. Tlupov

This article studies the recycling of medical masks by the extrusion method. The main mechanical and physicochemical properties of recycled medical masks have been researched. It was revealed that the processed medical masks contain high physical and mechanical properties. The article shows the introduction of recycled masks leading to an increase in the manufacturability of the homo-and a block copolymer of polypropylene. In the case of a block copolymer, an increase in elastic-strength properties is observed. The introduction of recycled masks does not significantly affect the thermophysical properties of the homo-and a block copolymer of polypropylene.


Polymer ◽  
2017 ◽  
Vol 113 ◽  
pp. 135-146 ◽  
Author(s):  
Y. Sun ◽  
P. Pitliya ◽  
C. Liu ◽  
X. Gong ◽  
D. Raghavan ◽  
...  

2015 ◽  
Vol 54 (2) ◽  
pp. 228-237 ◽  
Author(s):  
Kang Hee Ku ◽  
Hyunseung Yang ◽  
Se Gyu Jang ◽  
Joona Bang ◽  
Bumjoon J. Kim

2020 ◽  
Vol 49 (1-2) ◽  
pp. 211-219
Author(s):  
D. V. MINAKOV ◽  
M. A. PARAMONOV ◽  
P. R. LEVASHOV

We present quantum molecular dynamics calculations of thermophysical properties of solid and liquid rhenium in the vicinity of melting. We show that some pulse-heating experiments for rhenium can be independently described by the first-principle calculations. Our calculations predict significant volume change of about 6% at melting. We also provide our estimation of the enthalpy of fusion, which is about 33.6 kJ/mol.


1971 ◽  
Vol 32 (C5) ◽  
pp. C5a-295-C5a-300
Author(s):  
A. KELLER ◽  
J. DLUGOSZ ◽  
M. J. FOLKES ◽  
E. PEDEMONTE ◽  
F. P. SCALISI ◽  
...  

2015 ◽  
Vol 30 (2) ◽  
pp. 171 ◽  
Author(s):  
CHEN Tao-Tao ◽  
LI Dan ◽  
JING Wen-Heng ◽  
FAN Yi-Qun ◽  
XING Wei-Hong

Author(s):  
A. V. Akimov ◽  
A. V. Buketov ◽  
А. А. Sapronov ◽  
Mykola V. Brailo ◽  
S. V. Yakushchenko ◽  
...  

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