scholarly journals Effect of TPU hard segment content on TPU’s bead foaming behavior

2020 ◽  
Author(s):  
Emine Bursa Kucuk ◽  
Bige Batı ◽  
Mohammadreza Nofar
Keyword(s):  
Hard Segment ◽  
Hard Segment Content ◽  
Foaming Behavior

New Waterborne Polyurethane Dispersions from the Soybean-Oil-Based Polyols by Ring Opening of ESO with Glycol

2011 ◽  
Vol 197-198 ◽  
pp. 1196-1200
Author(s):  
Kun Peng Wang ◽  
Li Ting Yang
Keyword(s):  
Differential Scanning Calorimetry ◽  
Soybean Oil ◽  
Thermophysical Properties ◽  
Ring Opening ◽  
Hard Segment ◽  
Waterborne Polyurethane ◽  
Hardness Testing ◽  
Scanning Calorimetry ◽  
Hard Segment Content ◽  
Polyurethane Dispersions

A series of polyols (GSOLs) with a range of hydroxyl numbers based on epoxidized soybean oil (ESO) were prepared by ring opening with glycol. These Polyols of hydroxyl (OH) numbers ranging from 111 to 162 mg KOH/g were obtained. The environmentally friendly soybean-oil-based waterborne polyurethane dispersions (SPU) with very promising properties have been successfully synthesized from a series of soybean-oil-based polyols (GSOLs) with different hydroxyl numbers by a polyaddition reaction with toluene 2,4-diisocyanate (2,4-TDI). The structure and thermophysical properties of the resulting SPU films have been studied by Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and hardness testing. The experimental results showed that the functionality of the GSOLs and the hard segment content play a key role in controlling the structure and the thermophysical properties of the SPU films.

Synthesis of Polyurethane Elastomers by One-shot Technique and Study of Different Polyol Types and Hard Segment Content After Exposure to γ-Irradiation

2018 ◽  
Vol 12 (4) ◽  
pp. 705-715
Author(s):  
H. M. Abd El-Raheem ◽  
Y. K. Abdel-Monem ◽  
I. M. El-Sherbiny ◽  
K. Lotfy ◽  
M. M. Basuni ◽  
...  
Keyword(s):  
Hard Segment ◽  
Γ Irradiation ◽  
Polyurethane Elastomers ◽  
Hard Segment Content
Sign in / Sign up

Export Citation Format

Share Document