Microstructure and thermomechanical properties relationship of segmented thermoplastic polyurethane (TPU)

2014 ◽  
Author(s):  
Achim Frick ◽  
Michael Borm ◽  
Nouran Kaoud ◽  
Jan Kolodziej ◽  
Jens Neudeck
Keyword(s):  
Thermoplastic Polyurethane ◽  
Thermomechanical Properties ◽  
Relationship Of

scholarly journals Analysis of thermomechanical properties of polymeric materials produced by a 3D printing method

2019 ◽  
Vol 13 (4) ◽  
pp. 343-348
Author(s):  
Adam Gnatowski ◽  
Rafał Gołębski ◽  
Piotr Sikora
Keyword(s):  
3D Printing ◽  
Ethylene Terephthalate ◽  
Dynamic Properties ◽  
Thermoplastic Polyurethane ◽  
Polymeric Materials ◽  
Acrylonitrile Butadiene Styrene ◽  
Thermomechanical Properties ◽  
Poly Lactic Acid ◽  
Thermoplastic Polyurethane Elastomer ◽  
Butadiene Styrene

A comparative analysis of the thermomechanical properties of semicrystalline and amorphous polymeric materials was carried out. Samples were produced by using a 3D printing technology on the SIGNAL printer - ATMAT. The following polymeric materials were used to make the samples: TPU-thermoplastic polyurethane elastomer, ABScopolymer acrylonitrile-butadiene-styrene, Nosewood, PET-ethylene terephthalate, PLA-poly (lactic acid). The research included a thermal analysis of the dynamic properties (DMTA) of manufactured materials.

scholarly journals Oxidation Level and Glycidyl Ether Structure Determine Thermal Processability and Thermomechanical Properties of Arabinoxylan-Derived Thermoplastics

2020 ◽  
Author(s):  
Parveen Kumar Deralia ◽  
Aline Maire du Poset ◽  
Anja Lund ◽  
Anette Larsson ◽  
Anna Ström ◽  
...  
Keyword(s):  
Thermal Processing ◽  
Ring Opening ◽  
Glycidyl Ether ◽  
Thermomechanical Properties ◽  
Subsequent Reduction ◽  
Glycidyl Ethers ◽  
Dramatic Difference ◽  
Molar Substitution ◽  
Relationship Of ◽  
The Relationship

Herein we present arabinoxylan (AX)-based thermoplastics obtained by ring opening oxidation and subsequent reduction (dA-AX) combined with hydrophobization with three different glycidyl ethers [n-butyl (BuGE), isopropyl (iPrGE) and 2-ethylhexyl (EtHGE) glycidyl ether]. We also present the relationship of structural composition, thermal processing and thermomechanical properties. The BuGE and iPrGE etherified dA-AXs showed glass transition temperatures (T<sub>g</sub>) far below their degradation temperatures and gave thermoplastic materials when compression-molded at 140˚C. The BuGE (3 mole) etherified dA-AX films at 19 and 31 % oxidation levels exclusively exhibit 244 % (±42) and 267 % (±72) elongation. In contrast, iPrGE-dA-AX samples with shorter and branched terminals in the side chains had maximum 60 % (±19) elongation. The dramatic difference in elongation is assumed to be due to the presence of longer alkoxide chains, higher molar substitution and dual T<sub>g</sub> for the BuGE samples. Such superior elongation of AX thermoplastic films and its relationship with molar substitution and T<sub>g</sub> has not been reported before.

Effect of soft segment molecular weight and NCO:OH ratio on thermomechanical properties of lignin-based thermoplastic polyurethane adhesive

2020 ◽  
Vol 131 ◽  
pp. 109690 ◽  
Author(s):  
Julia Rocha Gouveia ◽  
Rogério Ramos de Sousa Júnior ◽  
Anderson Orzari Ribeiro ◽  
Sergio Adriano Saraiva ◽  
Demetrio Jackson dos Santos
Keyword(s):  
Molecular Weight ◽  
Soft Segment ◽  
Thermoplastic Polyurethane ◽  
Thermomechanical Properties ◽  
Polyurethane Adhesive

Impact of Controlled Hydrophobicity of the Organically Modified Silicates on the Properties of Biomedical Thermoplastic Polyurethane (TPU) Nanocomposites

2013 ◽  
Vol 795 ◽  
pp. 9-13 ◽  
Author(s):  
Azlin Fazlina Osman ◽  
Peter Halley ◽  
Darren Martin
Keyword(s):  
Mechanical Properties ◽  
Soft Segment ◽  
Thermoplastic Polyurethane ◽  
Hydrophobic Surface ◽  
Surface Modifications ◽  
Thermomechanical Properties ◽  
Organically Modified Silicates ◽  
Organically Modified ◽  
The Impact ◽  
Morphology And Mechanical Properties

The impact of nanofiller surface modifications and hydrophobicity on the morphology and mechanical properties of the biomedical TPU nanocomposites was studied. We show that incorporating nanofillers with higher hydrophobicity promotes better dispersion of nanofiller in TPU matrix due to greater interaction between the nanofiller and the hydrophobic PDMS soft segment in this ElastEon TPU system. The nanocomposite with the most hydrophobic surface modification demonstrates the best nanofiller dispersion and intercalation and hence resulted in an overall best mechanical and thermomechanical properties when incorporated in 2 wt%. These findings show that the polarity matching between the TPU and the nanofiller determines the nanofiller-TPU interactions and thus the mechanical properties of the produced nanocomposites.

scholarly journals Preparation and Properties of Thermoplastic Polyurethane Composites Filled with Powdered Buckwheat Husks

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 356
Author(s):  
Marcin Włoch ◽  
Paulina Landowska
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polymer Matrix ◽  
Chemical Structure ◽  
Low Cost ◽  
Thermoplastic Polyurethane ◽  
Thermomechanical Properties ◽  
Point Of View ◽  
Elongation At Break ◽  
Polyurethane Composites

Bio-based fillers for the polymer composites are still interesting from the scientific and industrial point of view, due to their low cost and renewable nature. In this work partially green composites were obtained by the mixing of thermoplastic poly(ester-urethane) with the unmodified and modified (by acetylation) grinded buckwheat husks. Obtained biocomposites were characterized in the terms of their chemical structure (FTIR), microstructure (SEM), thermal stability (TGA), thermomechanical properties (DMTA), and selected mechanical properties. The results showed that introduction of grinded buckwheat husks (even if the amount is 60 wt%) permit retaining high values of tensile strength (around 8–10 MPa), but the increasing amount of applied filler is connected with the decreasing of elongation at break. It can result from good interaction between the polymer matrix and the bio-based filler (confirmed by high values of polymer matrix-filler interaction parameter determined from Pukánszky’s model for the tensile strength of composites). The applied chemical treatment results in changing of mechanical properties of filler and composites. Obtained results confirmed the possibility of using powdered buckwheat husks as filler for thermoplastic polyurethane.

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