Effects of maleic anhydride grafted polyethylene on rheological, thermal, and mechanical properties of ultra high molecular weight polyethylene/poly(ethylene glycol) blends

2015 ◽  
Vol 132 (43) ◽  
pp. n/a-n/a
Author(s):  
Shuai He ◽  
Hui He ◽  
Yingchun Li ◽  
Dongqing Wang
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Maleic Anhydride ◽  
Ethylene Glycol ◽  
High Molecular Weight ◽  
Thermal And Mechanical Properties ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
Ultra High Molecular Weight

Hydrolytically and Reductively Degradable High-Molecular-Weight Poly(ethylene glycol)s

2007 ◽  
Vol 208 (24) ◽  
pp. 2642-2653 ◽  
Author(s):  
Alena Braunová ◽  
Michal Pechar ◽  
Richard Laga ◽  
Karel Ulbrich
Keyword(s):  
Molecular Weight ◽  
Ethylene Glycol ◽  
High Molecular Weight ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
High Molecular Weight Poly

Enhancement of Mechanical Properties Upon Hydration in Copolymers of PEG and Iodinated Tyrosine-derived Poycarbonates

2008 ◽  
Vol 1132 ◽  
Author(s):  
F. Bedoui ◽  
L. K. Widjaja ◽  
A. Luk ◽  
D. Bolikal ◽  
N. S. Murthy ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Ethylene Glycol ◽  
Ethyl Ester ◽  
Opposite Effect ◽  
Polymeric Materials ◽  
Cross Linking ◽  
Poly Ethylene Glycol ◽  
Reinforcing Effect ◽  
Poly Ethylene

ABSTRACTIncrease in modulus upon hydration in copolymers of desaminotyrosyl-tyrosine ethyl ester (DTE) and poly(ethylene glycol) (PEG) with iodinated tyrosines, poly(I2DTE-co-PEG carbonate)s, was investigated by varying the fraction and the molecular weight of the hydrophilic PEG component. Water, as expected, acts as plasticizer in polymer with PEG content < 15 wt% and > 30 wt%. But, water has the opposite effect in iodinated polymers with moderate PEG contents, between 15 to 20 wt%: it enhances the Young's modulus. The strength and modulus of hydrated poly(I2DTE-co-15%PEG2K carbonate)s increased by as much as fifteen fold upon hydration. While the decrease in the mechanical properties in most polymeric materials with diluents such water is due to the solvent-induced swelling, the increase in strength and modulus that is observed is most likely due to the reinforcing effect of the increased cross-linking efficiency of the hydrated PEG domains in the iodinated polymer.

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