Calix[4]arenes Used as a New Type of Chain Extender in the Preparation of Polyurethanes

Zheng, Qian; Gong, Shuling; Dong, Haiqing; Chen, Yuanyin

doi:10.1071/ch06387

Cited by 2 publications

(3 citation statements)

References 30 publications

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“…The PU‐calixarene composite ability to separate alkaline metal cations has been studied . Calixarene based synthesis of PU and enhancement pf mechanical and structural properties of PU have been widely reported at literature . Zheng et al have used calix[4]arene as chain extender at PU preparation .…”

Section: Introductionmentioning

confidence: 99%

“…[16,[25][26][27][28] Calixarene based synthesis of PU and enhancement pf mechanical and structural properties of PU have been widely reported at literature. [29][30][31][32] Zheng et al have used calix [4]arene as chain extender at PU preparation. [31] Yadav et al have studied the mechanical and structural properties of calix [4]arene-segmented polyurethane and its nanocomposites with single-walled carbon nanotubes.…”

Section: Introductionmentioning

confidence: 99%

“…[29][30][31][32] Zheng et al have used calix [4]arene as chain extender at PU preparation. [31] Yadav et al have studied the mechanical and structural properties of calix [4]arene-segmented polyurethane and its nanocomposites with single-walled carbon nanotubes. [30] Mohammadi et a. have investigated the synthesis and properties of thiacalix [4] arene-based polyurethane elastomers.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Functionalized Calix[4]arene Derivatives and Preparation of Rigid Polyurethane Foams by the Incorporation of Calixarene

Mirmoeini

Nikje

Rasouli-Saniabadi

et al. 2017

Macromolecular Symposia

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Summary Calix[4]arenes namely, 5,11,17,23 tetra tert butyl calix[4]arene and 5,11,17,23 tetra chlorosulfonyl calix[4]arene were synthesized to produce octakis (hydroxyl ethyl) sulfonamide calix[4]arene which was used in polyurethane‐calixarene rigid foam composite formulation. The effect of calixarene ratio on mechanical properties of synthesized composites was studied at three calixarene ratios including 1.5, 2, and 3 % (w/w). The obtained data indicate that the tensile strength and modulus are increased as the calixarene ratio increases while the fracture strain is decreased. Quantitatively, addition of 3% (w/w) of calixarene to the polyurethane resulted in 30.99% and 30.01% improvements in modulus and tensile strength, respectively. Contrarily, a decrease of about 13.1% was observed in fracture strain when compared to the properties of the pristine polyurethane rigid foam. The effect of Calixarene on thermal stability of Calixarene‐ polyurethane composite indicating that Calixarene component strictly enhances the thermal stability of composite.

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Section: Introductionmentioning

confidence: 99%