On the in-situ polymerization of cyclic butylene terephthalate oligomers: DSC and rheological studies

2006 ◽  
Vol 46 (6) ◽  
pp. 743-750 ◽  
Author(s):  
Z.A. Mohd Ishak ◽  
K.G. Gatos ◽  
J. Karger-Kocsis
Keyword(s):  
In Situ Polymerization ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate

Preparation and Characterization of In Situ Polymerized Cyclic Butylene Terephthalate and its Composites

2015 ◽  
Vol 813 ◽  
pp. 258-264
Author(s):  
Lu Zhang ◽  
Li Min Zhou ◽  
Ji Feng Zhang ◽  
Bin Yang ◽  
Shao Hua Fan
Keyword(s):  
Mechanical Property ◽  
In Situ Polymerization ◽  
Thermoplastic Composites ◽  
Degree Of Crystallinity ◽  
Fiber Volume ◽  
Melt Viscosity ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate ◽  
The Matrix

A fatal disadvantage of continuously reinforced thermoplastic composites is the high melt viscosity of the matrix which hampers impregnation. However, the melt viscosity of low molecular weight CBT resin can reach extremely low value, which simplifies impregnation and enables the use of thermoset production methods. The thermal analysis, rheological analysis and mechanical property on the polymerization and crystallization of CBT into poly (cyclic butylene terephthalate) (PCBT) at different ratios of catalyst were investigated in this paper. The continuous glass fiber (GF) reinforced PCBT composite with over 70% fiber volume content was prepared via in situ polymerization, and the mechanical property of the PCBT was studied. The best impregnation time was decreased and the degree of crystallinity was increased respectively with catalyst fraction increasing. The tensile/flexural strength and modulus of PCBT resin and GF/PCBT composites were enhanced when the catalyst fraction increased from 0.3% to 0.6%.

EVA/PBT nanostructured blends synthesized by in situ polymerization of cyclic cBT (cyclic butylene terephthalate) in molten EVA

Polymer ◽  
2009 ◽  
Vol 50 (12) ◽  
pp. 2527-2534 ◽  
Author(s):  
Walid Bahloul ◽  
Véronique Bounor-Legaré ◽  
Françoise Fenouillot ◽  
Philippe Cassagnau
Keyword(s):  
In Situ Polymerization ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate

Rheological and Ultrasonic Monitoring of the In-situ Polymerization of Cyclic Butylene Terephthalate

2008 ◽  
Author(s):  
Abdessalem Derdouri ◽  
Jacques Tatibouet ◽  
Pierre Sammut ◽  
Albert Co ◽  
Gary L. Leal ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Ultrasonic Monitoring ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate

Improved dispersion of multi-wall carbon nanotubes in poly(butylene terephthalate) using benzimidazolium surfactants

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Martino Colonna ◽  
Corrado Berti ◽  
Enrico Binassi ◽  
Maurizio Fiorini ◽  
Francesco Acquasanta ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Thermal Stability ◽  
In Situ Polymerization ◽  
Nucleation Process ◽  
Imidazolium Salt ◽  
Butylene Terephthalate ◽  
Multi Wall Carbon Nanotubes ◽  
Benzimidazolium Salt

AbstractMulti-wall carbon nanotubes/poly(butylene terephthalate) nanocomposites have been prepared by in-situ polymerization. Benzimidazolium tetrafluoroborate salts improve the dispersion of carbon nanotubes in the polymer matrix due to the formation of “π-cation” interactions of the imidazolium salt with the surface of the carbon nanotubes. An improved dispersion of the nanotubes in butanediol was also observed using the benzimidazolium salt. The presence of the compatibilization agent gives rise to improved thermo-mechanical properties and electrical conductivity for the nanocomposite. The presence of the nanotubes also consistently increases the thermal stability and enhances the nucleation process on PBT crystallization.

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