Preparation and characterization of hyperbranched poly(ether ether ketone)s suitable as rheology control agents for linear poly(ether ether ketone)s

Li, Xiujie; Zhang, Shuling; Zhou, Fugui; Pang, Jinhui; Zhang, Chunfeng; Sun, Dawei; Mu, Jianxin; Wang, Guibin; Jiang, Zhenhua

doi:10.1007/s13233-011-0503-y

Cited by 11 publications

(11 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, high melting temperatures and viscosities of these resins limit their processability and increase the cost of manufacturing . Several efforts have been made to improve the processability of PPS and PEEK by blending with rheology modifiers such as oligomers, lubricants, and hyperbranched polymers that typically result in a sacrifice of thermal and/or mechanical properties . Additionally, such additives can significantly affect the crystallization kinetics and degree of crystallinity, which dictate the processing conditions and mechanical performance of these semicrystalline systems .…”

Section: Introductionmentioning

confidence: 99%

Rheological and crystallization enhancement in polyphenylenesulfide and polyetheretherketone POSS nanocomposites

Knauer

Brust

Carr

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polyhedral oligomeric silsesquioxane (POSS) additives have been shown to increase melt-flow and crystallization in thermoplastics. In this study, the effect of incorporation of trisilanolphenyl-POSS molecules in polyphenylenesulfide (PPS) and polyetheretherketone (PEEK) on rheology, crystallization kinetics, and thermal and mechanical properties was evaluated. Parallel plate rheometry revealed a reduction in the viscosity of PPS and PEEK with the addition of POSS. The magnitude and concentration dependence of rheological modification were shown to depend on the polymer structure and POSS solubility. Isothermal crystallization kinetics were analyzed using the Avrami model and it was found that the addition of POSS accelerated the crystallization rate of PPS blends with no significant effect on PEEK blends. Interestingly, no statistical difference in degradation temperature, tensile modulus, or tensile strength of PPS or PEEK blends was observed. The findings indicate the potential for improvements in melt viscosity and crystallization of high temperature thermoplastics with tailored POSS/polymer interactions. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44462.

show abstract

Section: Introductionmentioning

confidence: 99%

Rheological and crystallization enhancement in polyphenylenesulfide and polyetheretherketone POSS nanocomposites

Knauer

Brust

Carr

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…They have good physical properties and can be used as thermoplastics, but they can also be highly viscous due to chain entanglements and are hence somewhat difficult to process. 13–14 The properties of hyperbranched polymers 15–16 are unique and lie in between linear polymers and dendrimers. They are less branched when compared to the perfectly branched dendrimers, and more branched when compared to the completely linear polymers.…”

Section: Introductionmentioning

confidence: 99%

An theoretical investigation of reaction site of 2,4′,6-trifluorobenzophenone, 2,4′,6-trifluorophenylsulfone with hydroquinone

Zhang

Chen

Liu

et al. 2014

High Performance Polymers

View full text Add to dashboard Cite

A detailed theoretical study for the nucleophilic aromatic substitution reaction of 2,4′,6-trifluorobenzophenone (TF), 2,4′,6-trifluorophenylsulfone (TFS) with hydroquinone was performed at the density function theory level together with the polarizable continuum model. With detailed free energy profiles and transition state structures, our theoretical study confirms that TF or TFS with the para-position fluorine has more thermodynamic and kinetic advantages than that with the ortho-position fluorine. In addition, the calculations involving the local reactivity indices (Fukui function), the global reactivity indices (electronic chemical potential), and rate constants further corroborate the location of the preferred bonding site. The impacts of resonance effect, introductive effect, and steric effect were comprehensively considered to explain the reason why para-position is a good reaction site. Our computational results are in good agreement with experimental results and give the potential polymer materials TFS.

show abstract

“…However, high melting temperature and high melt viscosity are the features of PEEK, which hampers its easy processing to a certain degree . Although a lot of efforts have been made to improve its processability , many mechanical or thermal properties were sacrificed. For PEEK fibers, numerous efforts have been devoted to improve their mechanical properties and structure by the changes of processing parameters in the past few decades .…”

Section: Introductionmentioning

confidence: 99%

Influence of the addition of lubricant on the properties of poly(ether ether ketone) fibers

et al. 2013

Self Cite

View full text Add to dashboard Cite

A high-temperature lubricant genioplast pellets (GPPS) was used in order to improve the processing behavior of poly(ether ether ketone) (PEEK) resin and high-performance PEEK fibers were produced by melt-spinning. The rheological properties of spinning material, morphology, mechanical, and thermal properties of PEEK fibers were characterized by using a polymer capillary rheometer, scanning electron microscopy, single fiber electronic tensile strength tester, wide-angle X-ray diffraction and thermal gravimetric analyzer, respectively. The results indicated that the introduction of lubricant GPPS decreased the melting viscosity of PEEK resin and improved spinnability of PEEK resin without sacrificing its thermal properties. The filaments are cylindrical with smooth surface and uniform diameter. The optimized content of GPPS was determined to be 1.0 wt% by balancing the decreased torque and changes of the mechanical properties. The strength and modulus of PEEK fibers were 420 MPa and 3.6 GPa, respectively. This should be due to the improvement in spinnability, followed by the enhancements in the orientation and crystallization of PEEK fibers in the process of drawing and annealing. POLYM. ENG. SCI., 53:2254-2260

show abstract

Preparation and characterization of hyperbranched poly(ether ether ketone)s suitable as rheology control agents for linear poly(ether ether ketone)s

Cited by 11 publications

References 27 publications

Rheological and crystallization enhancement in polyphenylenesulfide and polyetheretherketone POSS nanocomposites

Rheological and crystallization enhancement in polyphenylenesulfide and polyetheretherketone POSS nanocomposites

An theoretical investigation of reaction site of 2,4′,6-trifluorobenzophenone, 2,4′,6-trifluorophenylsulfone with hydroquinone

Influence of the addition of lubricant on the properties of poly(ether ether ketone) fibers

Contact Info

Product

Resources

About