Morphological, mechanical, and physical properties of composites made with wood flour-reinforced polypropylene/recycled poly(ethylene terephthalate) blends

2015 ◽  
Vol 38 (8) ◽  
pp. 1749-1755 ◽  
Author(s):  
Badrina Dairi ◽  
Hocine Djidjelli ◽  
Amar Boukerrou ◽  
Sebastien Migneault ◽  
Ahmed Koubaa
2012 ◽  
Vol 20 (12) ◽  
pp. 1300-1306 ◽  
Author(s):  
Jun Yong Park ◽  
Sung Yeon Hwang ◽  
Won Jae Yoon ◽  
Eui Sang Yoo ◽  
Seung Soon Im

2021 ◽  
Vol 94 (2) ◽  
pp. 202-209
Author(s):  
A. G. Zakharov ◽  
M. I. Voronova ◽  
O. V. Surov ◽  
N. V. Rubleva ◽  
A. V. Afineezskii

2011 ◽  
Vol 81 (19) ◽  
pp. 2065-2071
Author(s):  
Tae Hwan Oh ◽  
Sung Soo Han ◽  
Won Seok Lyoo ◽  
Myung Seob Khil

Poly(trimethylene terephthalate) (PTT)/poly(ethylene terephthalate) (PET) side-by-side conjugate fibers were heat-treated to investigate the effects of annealing on structure development and physical properties. The effects of annealing temperature and time were observed. Even though the drawn conjugate fibers were sufficiently drawn, X-ray profiles showed that the molecular orientation was insufficient. After annealing for more than 1 hour at 180°C, PET and PTT crystal structures developed sufficiently. Crimp contraction decreased from 29% to 22.6% by annealing due to the development of the crystalline structure of the annealed PTT part. Decrease in a shrinkage difference between PET and PTT leads to a decrease in crimp contraction. Thermal shrinkage was also reduced from 11.0% to 1.8% by annealing.


2013 ◽  
Vol 67 (6) ◽  
pp. 913-922 ◽  
Author(s):  
Aleksandar Marinkovic ◽  
Tijana Radoman ◽  
Enis Dzunuzovic ◽  
Jasna Dzunuzovic ◽  
Pavle Spasojevic ◽  
...  

Composites based on unsaturated polyester (UPe) resins and fumed silica AEROSIL? RY 50, NY 50, RX 50 and NAX 50, as well as graphite, TiO2 or organically modified clay CLOISITE 30B were prepared in order to investigate the influence of reinforcing agents on the mechanical properties of composites. Unsaturated polyester resins were synthesized from maleic anhydride and products of glycolysis, obtained by depolymerization of poly(ethylene terephthalate) with dipropylene glycol (UPe1 resin) and triethylene glycol (UPe2 resin) in the presence of tetrabutyl titanate catalyst. The obtained unsaturated polyesters were characterized by FTIR spectroscopy, acid and hydroxyl values, and their mechanical properties were also examined. Significant increase of the tensile modulus, tensile strength and decrease of the elongation at break was observed for composites prepared after addition of 10 wt.% of graphite or 10 wt.% of TiO2 to the UPe resins, indicating strong interaction between matrix and filler particles. On the other hand, nanocomposites prepared using UPe2 and hydrophobically modified silica nanoparticles showed lower tensile strength and tensile modulus than polymer matrix. The presence of CLOISITE 30B had no significant influence on the mechanical properties of UPe1, while tensile strength and tensile modulus of UPe2 increased after adding 10 wt.% of clay.


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