Kinetics of Ethylene Glycol Nitration

The non-isothermal crystallization kinetics of double-crystallizable poly(ethylene glycol)–poly(l-lactide) diblock copolymer (PEG-PLLA) and poly(ethylene glycol) homopolymer (PEG) were studied using the fast cooling rate provided by a Fast-Scan Chip-Calorimeter (FSC). The experimental data were analyzed by the Ozawa method and the Kissinger equation. Additionally, the total crystallization rate was represented by crystallization half time t1/2. The Ozawa method is a perfect success because secondary crystallization is inhibited by using fast cooling rate. The first crystallized PLLA block provides nucleation sites for the crystallization of PEG block and thus promotes the crystallization of the PEG block, which can be regarded as heterogeneous nucleation to a certain extent, while the method of the PEG block and PLLA block crystallized together corresponds to a one-dimensional growth, which reflects that there is a certain separation between the crystallization regions of the PLLA block and PEG block. Although crystallization of the PLLA block provides heterogeneous nucleation conditions for PEG block to a certain extent, it does not shorten the time of the whole crystallization process because of the complexity of the whole crystallization process including nucleation and growth.

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Transient kinetics of ATP hydrolysis by covalently crosslinked actomyosin complex in water and 40% ethylene glycol by the rapid flow quench method

Biochemistry ◽

10.1021/bi00335a059 ◽

1985 ◽

Vol 24 (14) ◽

pp. 3814-3820 ◽

Cited By ~ 20

Author(s):

J. A. Biosca ◽

F. Travers ◽

T. E. Barman ◽

R. Bertrand ◽

E. Audemard ◽

...

Keyword(s):

Ethylene Glycol ◽

Atp Hydrolysis ◽

Transient Kinetics ◽

Actomyosin Complex ◽

Rapid Flow ◽

Kinetics Of ◽

Quench Method

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Polyionic complexes of butyrylcholinesterase and poly-l-lysine-g-poly(ethylene glycol): Comparative kinetics of catalysis and inhibition and in vitro inactivation by proteases and heat

Chemico-Biological Interactions ◽

10.1016/j.cbi.2017.07.019 ◽

2017 ◽

Vol 275 ◽

pp. 86-94 ◽

Cited By ~ 5

Author(s):

Kirstin Hester ◽

Jing Liu ◽

Nicholas Flynn ◽

Lester G. Sultatos ◽

Liyi Geng ◽

...

Keyword(s):

Ethylene Glycol ◽

Poly Ethylene Glycol ◽

Poly Ethylene ◽

Kinetics Of

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Ethylene Glycol and Glycerin as the Solvent for Alkaline Treatment of Poly(ethylene Terephthalate) Fabrics

Textile Research Journal ◽

10.1177/004051759706701009 ◽

1997 ◽

Vol 67 (10) ◽

pp. 760-766 ◽

Cited By ~ 4

Author(s):

M.-C. Yang ◽

H.-Y. Tsai

Keyword(s):

Ethylene Glycol ◽

Degradation Rate ◽

Ethylene Terephthalate ◽

Treatment Time ◽

Alkaline Treatment ◽

Aqueous System ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene ◽

Kinetics Of ◽

Scanning Electron

Poly(ethylene terephthalate) fabrics are treated with sodium hydroxide using ethylene glycol or glycerin as the solvent. Compared with conventional aqueous alkaline hydrolysis, the degradation rate in ethylene glycol increases tenfold. The kinetics of the alkaline-ethylene glycol treatment show that the weight loss is linear with respect to time. The moisture regain rate and tensile properties of the treated fabrics are measured; other tests include scanning electron microscopy and dyeing properties. The results show that the properties of the treated fabrics do not depend significantly on the solvent; therefore, using ethylene glycol can greatly shorten the treatment time to achieve results similar to those with the conventional aqueous system.

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