Crystallization of block copolymers based on poly-1, 2-bis (?-hydroxyethoxy) phenylene adipate and polyethylene glycol adipate

1970 ◽  
Vol 13 (1) ◽  
pp. 940-944
Author(s):  
V. I. Kovalenko ◽  
L. I. Maklakov
Keyword(s):  
Polyethylene Glycol ◽  
Block Copolymers ◽  
Glycol Adipate

Polyimide-polyethylene glycol block copolymers: Synthesis, characterization, and initial evaluation as a biomaterial

1995 ◽  
Vol 6 (4) ◽  
pp. 313-323 ◽  
Author(s):  
Chandrashekhar P. Pathak ◽  
Amarpreet S. Sawhney ◽  
Christopher P. Quinn ◽  
Jeffrey A. Hubbell
Keyword(s):  
Polyethylene Glycol ◽  
Block Copolymers ◽  
Initial Evaluation

Biodegradable Poly-D,L-Lactic Acid-Polyethylene Glycol Block Copolymers as a BMP Delivery System for Inducing Bone

2001 ◽  
Vol 83 ◽  
pp. S1-92-S1-98 ◽  
Author(s):  
Naoto Saito ◽  
Takao Okada ◽  
Hiroshi Horiuchi ◽  
Narumichi Murakami ◽  
Jun Takahashi ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Polyethylene Glycol ◽  
Block Copolymers ◽  
Delivery System ◽  
Biodegradable Poly

Preparation of amphiphilic block copolymers (polyethylene adipate-block-polyethylene glycol) and its application in rotogravure ink formulations

2018 ◽  
Vol 47 (5) ◽  
pp. 415-423 ◽  
Author(s):  
Yasser Assem ◽  
Heba A. Mohamed ◽  
Rana Said ◽  
Ahmed El-Masry
Keyword(s):  
Optical Properties ◽  
Polyethylene Glycol ◽  
Block Copolymers ◽  
Ethylene Glycol ◽  
Adipic Acid ◽  
Amphiphilic Block Copolymers ◽  
Synthesis Process ◽  
Gravimetric Analysis ◽  
Content Type ◽  
Molecular Weights

Purpose The purpose of this paper is to prepare amphiphilic block copolymers polyethylene adipate-block-polyethylene glycol (PEA-b-PEG)s and study their performance as plasticizers in rotogravure ink formulations. Design/methodology/approach Series of amphiphilic block copolymers (PEA-b-PEG1), (PEA-b-PEG2), (PEA-b-PEG3), (PEA-b-PEG4) and (PEA-b-PEG5) were prepared by the reaction of adipic acid, ethylene glycol and polyethylene glycol of different molecular weights (300, 1,000, 2,000, 10,000 and 20,000 g/mol), respectively. Full characterization of the prepared copolymers was achieved using Fourier Transfer Infrared Spectroscopy (FTIR), 1H NMR, thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The performance of the prepared copolymers as plasticizers for neat nitrocellulose resin were studied in different formulations, namely, R1, R2, R3, R4 and R5 containing copolymers (PEA-b-PEG1), (PEA-b-PEG2), (PEA-b-PEG3), (PEA-b-PEG4) and (PEA-b-PEG5), respectively. In addition to formula R0 that contains acetyl tributyl citrate (ATBC) as a commercial plasticizer. The mechanical properties, thermal analysis (DSC, TGA) and optical properties of the prepared formulations films were investigated. Theses amphiphilic block copolymers were then applied as plasticizers in different rotogravure ink formulations (F1, F2, F3, F4 and F5) and compared with commercial rotogravure ink formula (F0). The color measurements and optical properties of all formulations were achieved. Findings It was found that the performance of the prepared copolymers as plasticizers in different formulations based on nitro cellulose resin gives better gloss, adhesion for R1 compared with the other samples and color strength for F1 compared with F0. Finally, all the samples gave excellent plasticizing effect. Research limitations/implications The authors believe that type of these materials open the way for a new class of plasticizers that upon application or even degradation gives small ecofriendly molecules (adipic acid and or ethylene glycol moieties) taking into consideration the simplicity of the rout of the synthesis process. Practical implications The prepared ecofriendly (PEA-b-PEG)s could be successfully used as plasticizers instead of commercial plasticizer ATBC. Originality/value The research provides that the prepared (PEA-b-PEG)s with different molecular weights can act as plasticizers in rotogravure ink formulations, and their performance was acceptable and available.

Cell Motility on Polyethylene Glycol Block Copolymers Correlates to Fibronectin Surface Adsorption

2014 ◽  
Vol 14 (12) ◽  
pp. 1755-1763 ◽  
Author(s):  
Peter J. F. Röttgermann ◽  
Samira Hertrich ◽  
Ida Berts ◽  
Max Albert ◽  
Felix J. Segerer ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Block Copolymers ◽  
Cell Motility ◽  
Surface Adsorption

Synthesis and study of block copolymers based on caprolactam and polyethylene glycol

1996 ◽  
Vol 28 (4) ◽  
pp. 278-281 ◽  
Author(s):  
V. G. Silant'eva ◽  
N. A. Filatova ◽  
L. N. Mizerovskii
Keyword(s):  
Polyethylene Glycol ◽  
Block Copolymers

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.

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