Dynamic mechanical analysis of fibre-reinforced plastic composites based on carboxyl terminated poly(ethylene glycol) adipate modified epoxy and E glass fibre

2000 ◽  
Vol 49 (8) ◽  
pp. 815-819 ◽  
Author(s):  
D Ratna ◽  
T?K Chongdar ◽  
B?C Chakraborty
Keyword(s):  
Ethylene Glycol ◽  
Glass Fibre ◽  
Mechanical Analysis ◽  
Glycol Adipate ◽  
Poly Ethylene Glycol ◽  
Plastic Composites ◽  
Ethylene Glycol Adipate ◽  
Reinforced Plastic ◽  
Poly Ethylene ◽  
Modified Epoxy

Polymorphism in poly (Ethylene glycol adipate)

1967 ◽  
Vol 9 (8) ◽  
pp. 1880-1888 ◽  
Author(s):  
B.Ya. Teitel'baum ◽  
N.A. Palikhov ◽  
L.I. Maklakov ◽  
N.P. Anoshina ◽  
I.O. Murtazina ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Glycol Adipate ◽  
Poly Ethylene Glycol ◽  
Ethylene Glycol Adipate ◽  
Poly Ethylene

Alternative polymer precipitants for protein crystallization

2010 ◽  
Vol 43 (4) ◽  
pp. 737-742 ◽  
Author(s):  
Tereza Skálová ◽  
Jarmila Dušková ◽  
Jindřich Hašek ◽  
Petr Kolenko ◽  
Andrea Štěpánková ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Ethylene Glycol ◽  
Protein Crystallization ◽  
Glycol Adipate ◽  
Poly Ethylene Glycol ◽  
Ph Values ◽  
Ethylene Glycol Adipate ◽  
Acid Sodium Salt ◽  
Poly Ethylene ◽  
Glycol Methyl Ether

A set of 16 inexpensive and commercially available polymer precipitants were tested for protein crystallization. Eight of them were found suitable: polyethylene glycol dimethyl ether of molecular weight (MW) 500, 1000 and 2000; di[poly(ethylene glycol)] adipate, MW 900; poly(ethylene glycol-ran-propylene glycol), MW 2500 and 12000; poly(acrylic acid) sodium salt, MW 2100; and polyethylene glycol methyl ether methacrylate, MW 1100. Two new crystallization screens, PolyA and PolyB, were formulated using these eight polymers, each containing 96 solutions – four polymers in combination with 24 common salts and buffers, covering pH values from 4.5 to 9.0. The screens were tested on 29 proteins, 21 of which were crystallized. The tests confirmed the applicability of the eight polymers as precipitants for protein crystallization.

Dynamic Mechanical Behaviour of Poly Ethylene Glycol Plasticized Polylacticacid

2012 ◽  
Vol 576 ◽  
pp. 224-227
Author(s):  
M.R. Kaiser ◽  
Hazleen Anuar ◽  
Shamsul Bhari A. Razak
Keyword(s):  
Ethylene Glycol ◽  
Mechanical Analysis ◽  
Partial Replacement ◽  
Potential Candidate ◽  
Poly Ethylene Glycol ◽  
Screw Extruder ◽  
Dynamic Mechanical ◽  
Molecular Weights ◽  
Twin Screw ◽  
Poly Ethylene

Polylacticacid (PLA), produced from annually renewable, natural resources is a potential candidate for the partial replacement of petroleum based polymers and also for its biodegradability. PLA is well known for its better mechanical, thermal property but unfortunately the brittleness and rigidity limit its applicability. For a great number of applications such as packaging, fibers, films, etc., it is of high interest to formulate new PLA grades with improved flexibility and better impact properties. In order to develop PLA-based biodegradable packaging, the physico-mechanical properties of commercially available PLA should be modified using plasticizers. For this, PLA was melt-mixed with poly ethylene glycol (PEG) of 600 molecular weights by twin screw extruder. The thermal properties of plasticized PLA were characterized by utilization of dynamic mechanical analysis. The result shows that with addition of plasticizer glass transition temperature (Tg) is decreased sharply and the storage modulus was also decreased.

Control interfacial properties and tensile strength of glass fibre/PP composites by grafting poly(ethylene glycol) chains on glass fibre surface

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40668-40677 ◽  
Author(s):  
Zeyu Liu ◽  
Bin Hao ◽  
Yagang Zhang
Keyword(s):  
Tensile Strength ◽  
Ethylene Glycol ◽  
Glass Fibre ◽  
Interfacial Adhesion ◽  
Fibre Surface ◽  
Interfacial Properties ◽  
Poly Ethylene Glycol ◽  
Pp Composites ◽  
Poly Ethylene

The interfacial adhesion increased as the grafted PEG chains became longer.

Viscometric Study of Poly(ester Urethane) Solutions: 2. Influence of Hard-Segment Composition on the Unperturbed Dimensions

2003 ◽  
Vol 15 (3) ◽  
pp. 319-328 ◽  
Author(s):  
Silvia Ioan ◽  
Mihaela Lupu ◽  
Doina Macocinschi
Keyword(s):  
Hard Segment ◽  
Glycol Adipate ◽  
Poly Ethylene Glycol ◽  
Solution Property ◽  
Unperturbed Dimensions ◽  
Ethylene Glycol Adipate ◽  
Hard Segments ◽  
Poly Ethylene ◽  
Viscometric Study

Using viscometry, we have studied the dilute solution property of segmented poly(ester urethane)s obtained by the reaction of aromatic diisocyanates with poly(ethylene glycol)adipate and 4,4′-dihidroxydiethoxydiphenyl sulphone as chain extender, using a multistep polyaddition process. A new method proposed by Qian et al. was utilized for the determination of unperturbed dimensions of poly(ester urethane)s having different hard segments by the measurement of the intrinsic viscosity at non-theta conditions only. The influence of the hard segments on the unperturbed dimensions of these polymers was observed. The diisocyanates with methyl substituents in the hard segments, such as 2,4-tolylene diisocyanate, have smaller unperturbed dimensions compared with the samples containing 4,4′-methylene diphenylene diisocyanate, which are believed to possess significant chain rigidity because of the high cohesive energy and bulkiness of the benzene ring.

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