Ge, Zhen, Xingyuan Zhang, and Jiabing Dai. European polymer journal 42.2 (2006): 395-401.
Polytetramethylene glycol (PTMG) is a versatile polyether diol widely used in polymer synthesis due to its excellent flexibility and hydrolytic stability. In this study, PTMG was employed as a substrate for the radical grafting of hexafluoropropylene (HFP) to produce fluorinated polyether glycol (PTMG-g-HFP), which enhances chemical resistance and thermal stability.
The synthesis was carried out in a 500 mL Hastelloy-lined autoclave, where 140 g of molten PTMG (Mn = 1000) was mixed with 0.0164 mol di-tert-butyl peroxide as an initiator. After freezing the mixture in an acetone/liquid nitrogen bath and evacuating the system, 300 g of HFP was introduced under vacuum. The reaction proceeded at 140 °C for 6 h under constant stirring, followed by purification via reduced-pressure distillation.
This fluorinated modification of PTMG imparts hydrophobicity and enhanced chemical resistance, making PTMG-g-HFP a promising material for advanced coatings, elastomers, and high-performance lubricants. The study highlights the effective radical grafting of fluorinated monomers onto PTMG, demonstrating its potential in the development of next-generation functional materials.
Isfahani, Ali Pournaghshband, et al. Journal of Membrane Science 513 (2016): 58-66.
Polytetramethylene glycol (PTMG) is a key polyether diol widely utilized in polyurethane (PU) and polyurethane-urea (PUU) synthesis due to its flexibility, hydrolytic stability, and compatibility with various isocyanates. In this study, PTMG was employed in the fabrication of selective gas separation membranes based on PU and PUU.
The polymers were synthesized via a two-step bulk polymerization method, where PTMG was first reacted with an excess of isophorone diisocyanate (IPDI) at 75 °C under a nitrogen atmosphere to obtain a macro diisocyanate pre-polymer. The polymerization was completed by adding ethereal chain extenders, such as 1,4-butanediol (BDO) and various diamines, in a molar ratio of PTMG:IPDI:chain extender = 1:3:2. The resulting polyurethanes were purified through methanol-water precipitation and dried under vacuum at 70 °C. Gel permeation chromatography (GPC) confirmed the molecular weight and polydispersity index of the synthesized PUs.
The incorporation of PTMG provided the synthesized PUs and PUUs with tunable gas transport properties, making them highly suitable for selective gas separation applications. This study underscores PTMG's critical role in the development of high-performance polymeric membranes for industrial gas separation.
Li, Zhihua, et al. Materials Today Communications 19 (2019): 402-406.
Polytetramethylene glycol (PTMEG), a key polyether diol, plays a crucial role in the synthesis of fluorosilicone polyether polyurethane (FSPU), a high-performance elastomer with enhanced mechanical and chemical resistance. In this study, PTMEG was utilized as a soft segment in FSPU preparation, contributing to the polymer's flexibility and durability.
The synthesis began with the dehydration of PTMEG (150.00 g) and hydroxyl fluorosilicone oil (3.19 g) at 100-110 ℃ under vacuum for 1-1.5 h to reduce moisture content below 0.05%. The mixture was then cooled to 40 ℃ before the addition of 1-2 drops of catalyst. Toluene diisocyanate (TDI, 31.92 g) was subsequently introduced, initiating prepolymer formation. The system was gradually heated to 80 ± 5 ℃ and maintained under a dry nitrogen atmosphere for 3 h, ensuring complete reaction. The -NCO content of the prepolymer was monitored using dibutylamine titration.
The incorporation of PTMEG into FSPU imparts excellent elasticity, hydrolytic stability, and mechanical strength, making it suitable for applications in coatings, adhesives, and biomedical materials. This study highlights PTMEG's essential role in developing advanced polyurethane materials, demonstrating its significance in high-performance polymer synthesis.
What is the CAS number for Polytetramethylene glycol?
The CAS number for Polytetramethylene glycol is 25190-06-1.
What are some synonyms for Polytetramethylene glycol?
Some synonyms for Polytetramethylene glycol include PTMG, PTMEG, Polybutylene glycol, and Poly(oxy-1,4-butylene) glycol.
What is the molecular formula for Polytetramethylene glycol?
The molecular formula for Polytetramethylene glycol is (C4H8O).H2O.
What is the physical state of Polytetramethylene glycol?
Polytetramethylene glycol can exist in a solid or liquid physical state.
What is the typical percentage of actives in Polytetramethylene glycol?
The typical percentage of actives in Polytetramethylene glycol is 95%.
How can Polytetramethylene glycol be used in applications?
Polytetramethylene glycol can be used as an emulsifying agent, dispersing agent, solubilizing agent, and lubricant.
What is another name for Polytetramethylene glycol?
Another name for Polytetramethylene glycol is Poly(tetramethylene ether)diol.
What is the chemical formula of Polytetramethylene glycol without water?
The chemical formula of Polytetramethylene glycol without water is C4H8O.
What is the primary function of Polytetramethylene glycol as an emulsifying agent?
The primary function of Polytetramethylene glycol as an emulsifying agent is to help disperse immiscible liquids in a stable manner.
What is the role of Polytetramethylene glycol as a solubilizing agent?
Polytetramethylene glycol can function as a solubilizing agent by helping to dissolve or disperse substances in a solvent to form a homogeneous solution.
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