Polytetramethylene-terephthalate

In this review recent theoretical developments which enable quantitative measures of molecular orientation in polymers to be obtained from infra-red and Raman spectroscopy and nuclear magnetic resonance have been discussed in some detail. Although this is clearly a subject of some complexity, it has been possible to show that the systematic application of these techniques to polyethylene terephthalate and polytetramethylene terephthalate can provide unique information of considerable value. This information can be used on the one hand to gain an understanding of the mechanisms of deformation, and on the other to provide a structural understanding of physical properties, especially mechanical properties. 

Poly(butylene terephthalate) (PBT) [also called polytetramethylene terephthalate (PTMT)] Poly(ethylene terephthalate) (PET)... 

PC PE PES PET PF PFA PI PMMA PP PPO PS PSO PTFE PTMT PU PVA PVAC PVC PVDC PVDF PVF TFE SAN SI TP TPX UF UHMWPE UPVC Polycarbonate Polyethylene Polyether sulfone Polyethylene terephthalate Phenol-formaldehyde Polyfluoro alkoxy Polyimide Polymethyl methacrylate Polypropylene Polyphenylene oxide Polystyrene Polysulfone Polytetrafluoroethylene Polytetramethylene terephthalate (thermoplastic polyester) Polyurethane Polyvinyl alcohol Polyvinyl acetate Polyvinyl chloride Polyvinyl idene chloride Polyvinylidene fluoride Polyvinyl fluoride Polytelrafluoroethylene Styrene-acrylonitrile Silicone Thermoplastic Elastomers Polymethylpentene Urea formaldehyde Ultrahigh-molecular-weight polyethylene Unplasticized polyvinyl chloride... 

PTMT polytetramethylene-terephthalate QDS quality data statistics... 

Slagowski et al. (33) demonstrated the feasibility of HFIP as the SEC eluant for several polytetramethylene terephthalate polymers. Because polystyrene is not soluble in HFIP, no MW values were reported. In the same year Drott (7) used HFIP as SEC solvent for both nylons and polyesters. A polyelectrolyte effect had been observed for nylons but it was not a problem for polyesters. Drott also indicated that no polymer degradation occurred in HFIP by comparing the intrinsic viscosities of the initial and recovered PET samples. The direct calibration method was used by trial-and-error adjustment of the coefficients of a cubic polynomial until intrinsic viscosities of the samples calculated from SEC data (using the Mark-Houwink equation) agreed with experimentally measured values. 

Tenite PTMT Polytetramethylene terephthalate, PTMT Eastman Chem. Prod. 

Polybutylene terephthalate (PBTP, PBT, and polytetramethylene terephthalate) n. A member of the polyalkylene terephthalate family, similar to polyethylene terephthalate in that it is derived from a polycondensate of terephthalic acid, but with butanediol rather than glycol. PBTP can be modified easily to overcome its relatively low-operating-temperature limit, making it equivalent to plastics used in... 

PDO = poly-1,4-dioxane-2-one PGA = polyglycolic acid PTMC = polytrimethylene-carbonate PCL = polycaprolactone PGL = poly(glycolid-lactide) PG = polyglycolide PDS = p-dioxanone PTMT = polytetramethylene terephthalate i-P = isotactice polypropylene PLG = poly(lactide-glycolide). Source Ingle (2003) Chu etal. (1997). 

Osmometry has been used to measure the molecular weight of a wide range of polymers including PVC [147], PET [148-150], Nylon [149], PS [148], and linear polyesters [150], including polytetramethylene terephthalate, polypentamethylene terephthalate, polyhexamethylene terephthalate and polytetramethylene isophthalate. 

M. Hayashi, H. Ikeuchi and M. Tanaka, Process of preparing polytetramethylene terephthalate, US Patent 3,936,421,1974. 

Lilaonitkul A, West J C and Cooper S L (1976) Properties of polytetramethylene oxide-polytetramethylene terephthalate block polymers, J Macromol Sci-Phys 812 563-597. 

Polybutylene terephthalate (PBTP or PBT) is identical to polytetramethylene terephthalate (PTMP)... 

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