scholarly journals The effects of rubber nanoparticles with different polarities on thermal properties and foaming performance of polypropylene blends

RSC Advances ◽  
2020 ◽  
Vol 10 (52) ◽  
pp. 31355-31362
Author(s):  
Bo Tian ◽  
Zhigang Li ◽  
Jinfeng Li ◽  
Gang Yao ◽  
Wei Dong ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Polybutadiene Rubber ◽  
Polypropylene Blends

Polypropylene blends with both polybutadiene rubber and polycarboxylbuturonile rubber and the required amount of acrylamide was prepared by blending with water, improve the foaming and thermal properties of polypropylene.

scholarly journals Preparation and Characterization of Talc Filled Thermoplastic Polyurethane/Polypropylene Blends

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Emi Govorčin Bajsić ◽  
Vesna Rek ◽  
Ivana Ćosić
Keyword(s):  
Thermal Properties ◽  
Thermoplastic Polyurethane ◽  
Mechanical Analysis ◽  
Degree Of Crystallinity ◽  
Scanning Calorimetry ◽  
Polypropylene Blends ◽  
Pp Blends ◽  
The Degree Of Crystallinity ◽  
Better Than

The effect of the addition of talc on the morphology and thermal properties of blends of thermoplastic polyurethane (TPU) and polypropylene (PP) was investigated. The blends of TPU and PP are incompatible because of large differences in polarities between the nonpolar crystalline PP and polar TPU and high interfacial tensions. The interaction between TPU and PP can be improved by using talc as reinforcing filler. The morphology was observed by means of scanning electron microscopy (SEM). The thermal properties of the neat polymers and unfilled and talc filled TPU/PP blends were studied by using dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The addition of talc in TPU/PP blends improved miscibility in all investigated TPU/T/PP blends. The DSC results for talc filled TPU/PP blends show that the degree of crystallinity increased, which is due to the nucleating effect induced by talc particles. The reason for the increased storage modulus of blends with the incorporation of talc is due to the improved interface between polymers and filler. According to TGA results, the addition of talc enhanced thermal stability. The homogeneity of the talc filled TPU/PP blends is better than unfilled TPU/PP blends.

Elastic melt-blown nonwoven fabrication of styrene‐ethylene/butylene‐styrene copolymer and polypropylene blends: a study of morphology and properties

2021 ◽  
pp. 004051752110663
Author(s):  
Li Chang ◽  
Chuanfen Wu ◽  
Pengfei Lan ◽  
Bing Bai ◽  
Liang Jiang ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Porous Structure ◽  
Melt Blowing ◽  
Styrene Copolymer ◽  
Fine Fiber ◽  
Good Filtration ◽  
Increasing Demand ◽  
Polypropylene Blends ◽  
Filtration Properties ◽  
Melt Blown Nonwoven

Fabrics produced by the melt-blown nonwoven process have the advantage over competing materials of possessing an ultrafine fibrous and porous structure. However, their brittleness and poor toughness restrict their wider application. There is increasing demand for nonwovens that have high stretchability and elasticity while maintaining a melt-blown structure. In this study, polypropylene (PP) and styrene‐ethylene/butylene‐styrene copolymer (SEBS) were blended at different ratios and subsequently used in the melt-blowing process. The morphology of the blends displayed a co-continuous structure when the ratio of SEBS to PP in blends was similar. Furthermore, it was found that all the blends had good spinnability from the melt-blowing process during rheological and thermal properties tests. All the elastic melt-blown nonwovens fabricated in this research had elongations higher than 400% and elastic recoveries higher than 50%, which was indicative of good elasticity. Meanwhile, the nonwovens maintained fine fiber diameters and good filtration properties, in keeping with traditional melt-blown nonwovens.

Polybutadiene rubber/exfoliated graphite nanocomposites: Impact of filler on the thermal, mechanical and permeability characteristics

2019 ◽  
Vol 35 (3) ◽  
pp. 138-148
Author(s):  
Soney C George ◽  
Jiji Abraham ◽  
Thomasukutty Jose ◽  
Riya Thomas ◽  
Teresa Jacob ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Thermal Properties ◽  
Structural Characteristics ◽  
Nitrogen Atmosphere ◽  
Exfoliated Graphite ◽  
Melt Mixing ◽  
Permeability Characteristics ◽  
Polybutadiene Rubber ◽  
Permeation Studies

In this report, we demonstrate that both mechanical behaviour and thermal stability of polybutadiene rubber (PBR) nanocomposites could be improved by incorporating exfoliated graphite (EG) using melt mixing method. Incorporation of the filler EG in the polybutadiene (PBD) matrix is confirmed by infrared spectra and X-ray diffraction analysis. The structural characteristics, mechanical properties and thermal properties of these newly modified PBR nanocomposites were systematically analysed and studied. Thermal properties of the nanocomposites were studied using thermogravimetric analysis under nitrogen atmosphere. Thermogravimetric studies showed that PBR8 is having higher thermal stability than that of the PBR gum sample. Mechanical properties like tensile strength, Young’s modulus, tear strength, hardness and compression set of the nanocomposites were studied. Mechanical properties are also high for the modified PBR nanocomposites with maximum filler content. The permeability of organic vapours such as dichloromethane (CH2Cl2), chloroform (CHCl3) and carbon tetrachloride (CCl4) through PBR/EG nanocomposites was also studied. In vapour permeation studies, PBR4 exhibits the least permeability in CH2Cl2, CHCl3 and CCl4 solvents. Polybutadiene rubber–natural graphite (PBR/NG) nanocomposites were also prepared for comparison.

Polypropylene Blends with m-EPR Copolymers: Structure, Morphology and Thermal Properties

2017 ◽  
Vol 57 (3) ◽  
pp. 229-241 ◽  
Author(s):  
Anđela Pustak ◽  
Iztok Švab ◽  
Emi Govorčin Bajsić ◽  
Matjaž Denac ◽  
Vojko Musil ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Structure Morphology ◽  
Polypropylene Blends
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