The first group of polyols tested were polyethers, consisting of polyethylene glcol), PEG; polypropylene glycol), PPG; and poly(tetramethylene
Poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO, 2000 g/mol, PEG, 50 wt% Sigma Aldrich, USA), PPG (2000 g/mol, Sigma Aldrich, USA), poly(tetramethylene
ether glycol) [PTMG, 2000 g/mol, MCC Advanced Polymers (Ningbo, China)], and dimethylol propionic acid (DMPA, Perstorp, Sweden) were dried at 80[degrees]C in a vacuum oven for 12 h before use.
where 4G is butylene glycol, B is poly(tetramethylene
ether glycol) and T is terephthalate.
DMEM medium, dimethyl sulfoxide (DMSO), acrylamide/bis TEMED (tetramethylene
diamine), 3-(4, 5-dimethylthiazol-2-yl)2, 5-diphenyl-tertazolium bromide (MTT), penicillin, streptomycin, tryspin-EDTA, [alpha]-melanocyte stimulating hormone ([alpha]-MSH), arbutin, and anti-[beta]-actin were purchased from Sigma-Aldrich Co.
Rambabu, "Nanocomposite hybrid membranes containing polyvinyl alcohol or poly(tetramethylene
oxide) for fuel cell applications," Journal of Applied Electrochemistry, vol.
First, prepolymers are produced from poly(tetramethylene
oxide) and toluenediisocyanate.
MCC is currently offering various petrochemical production technologies, such as acrylic acid and its esters, oxo alcohols, poly tetramethylene
ether glycol (PTMG), maleic anhydride, bisphenol-A (BPA) and purified terephthalic acid (PTA).
oxide) glycol (PTMO-2000), polyethylene glycol (PEG-2000) based TPU with 20 and 30 % urea hard segment content was synthesized and used for the study.
One hundred p1 of tetramethylene
benzidine dihydrochloride (Kem-En-Tec) was then added as the substrate.
Properties of a bacterium, which degrades solid Poly (tetramethylene
succenate)co-adipate, a biodegradable plastic.
Hydrogels based on poly(ethylene oxide) and poly(tetramethylene
oxide) or poly (dimethyl siloxane): synthesis, characterization, in vitro protein adsorption and platelet adhesion.
A multitude of polymers have been investigated for the purposes of hydrogel synthesis, including poly(tetramethylene
oxide) (PTMO), poly(dimethyl siloxane) (PDMS), and poly(ethylene oxide) (PEO) (32) poly(ethylene glycol) di-[ethyl phosphatidyl (ethylene glycol) methacrylate] (PhosPEG-dMA) (39), PEG/[PD.sub.5]/PDMS (40), and poly (N, N-dimethyl acrylamide (PDMAAm) (35).