Thermo-optical study of crystallizable polymers. Melting of poly (Ethylene glycol adipate)

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.

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

Polymer International ◽

10.1002/1097-0126(200008)49:8<815::aid-pi458>3.0.co;2-p ◽

2000 ◽

Vol 49 (8) ◽

pp. 815-819 ◽

Cited By ~ 10

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

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Thermodynamic analysis of a morphological transition and the glass transition in poly(ethylene glycol adipate)

Polymer Science U S S R ◽

10.1016/0032-3950(72)90113-x ◽

1972 ◽

Vol 14 (6) ◽

pp. 1381-1387 ◽

Cited By ~ 5

Author(s):

V.P. Privalko

Keyword(s):

Glass Transition ◽

Ethylene Glycol ◽

Thermodynamic Analysis ◽

Glycol Adipate ◽

Morphological Transition ◽

Poly Ethylene Glycol ◽

Ethylene Glycol Adipate ◽

Poly Ethylene

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Synthesis, characterization, and evaluation of carboxyl-terminated poly(ethylene glycol) adipate-modified epoxy networks: Effect of molecular weight

Journal of Applied Polymer Science ◽

10.1002/app.25285 ◽

2006 ◽

Vol 103 (3) ◽

pp. 1723-1730 ◽

Cited By ~ 13

Author(s):

M. Murali ◽

D. Ratna ◽

A. B. Samui ◽

B. C. Chakraborty

Keyword(s):

Molecular Weight ◽

Ethylene Glycol ◽

Glycol Adipate ◽

Poly Ethylene Glycol ◽

Epoxy Networks ◽

Ethylene Glycol Adipate ◽

Poly Ethylene ◽

Modified Epoxy

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Inverse gas chromatography for identification of poly(ethylene glycol adipate) and tripropionitrilamine on the surface of polymeric sorbent

Protection of Metals and Physical Chemistry of Surfaces ◽

10.1134/s2070205114060094 ◽

2014 ◽

Vol 50 (6) ◽

pp. 773-776

Author(s):

F. Kh. Kudasheva ◽

V. Yu. Guskov ◽

A. G. Ganieva

Keyword(s):

Gas Chromatography ◽

Ethylene Glycol ◽

Inverse Gas Chromatography ◽

Glycol Adipate ◽

Poly Ethylene Glycol ◽

Polymeric Sorbent ◽

Ethylene Glycol Adipate ◽

Poly Ethylene

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

High Performance Polymers ◽

10.1177/0954008303015003008 ◽

2003 ◽

Vol 15 (3) ◽

pp. 319-328 ◽

Cited By ~ 7

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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Synthesis and Properties of Unsaturated Poly(Urethane-Imide)s

High Performance Polymers ◽

10.1177/0954008303015003006 ◽

2003 ◽

Vol 15 (3) ◽

pp. 291-299 ◽

Cited By ~ 3

Author(s):

Stefan Oprea

Keyword(s):

Carbon Dioxide ◽

Molecular Weight ◽

Maleic Anhydride ◽

Glycol Adipate ◽

Poly Ethylene Glycol ◽

Thermal Stabilities ◽

Flexible Films ◽

Methylene Diphenyl Diisocyanate ◽

Ethylene Glycol Adipate ◽

Poly Ethylene

Unsaturated poly(urethane-imide)s were prepared by the reaction of unsaturated polyurethane prepolymers with maleic anhydride. The polyurethane prepolymers were synthesized by the reaction of 4,4′-methylene diphenyl diisocyanate (MDI) with unsaturated polyesters having a molecular weight of about 500 or with a mixture of unsaturated and saturated polyesters having a molecular weight of about 2000. The unsaturated polyurethane prepolymers reacted with maleic anhydride until the evolution of carbon dioxide ceased to yield unsaturated poly(urethane-imide)s. These polymers exhibited improved solubility in organic solvents and formed flexible films showing fairly good stress-strain properties. Compared to conventional polyurethanes based on MDI and poly(ethylene glycol adipate) these polymers exhibited better thermal stabilities due to the presence of the imide groups.

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