FTIR analysis of thermally processed PU foam

Hatchett, David W.; Kodippili, Gayani C.; Kinyanjui, John M.; Benincasa, Flocerfida E; Sapochak, Linda S.

doi:10.1016/j.polymdegradstab.2004.10.012

Cited by 85 publications

(58 citation statements)

References 11 publications

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“…The DTG curve (Fig. 8, inset) also confi rms that the temperature range of decomposition of HPCM-2-130 is coincident with O stretching modes and that around 2900 cm 1 to C H stretching modes of F127 and PU foam [30,32].…”

Section: Nano Researchsupporting

confidence: 53%

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Facile fabrication of hierarchically porous carbonaceous monoliths with ordered mesostructure via an organic organic self-assembly

2009

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A simple strategy for the synthesis of macro-mesoporous carbonaceous monolith materials has been demonstrated through an organic organic self-assembly at the interface of an organic scaffold such as polyurethane (PU) foam. Hierarchically porous carbonaceous monoliths with cubic (Im m) or hexagonal (p6mm) mesostructure were prepared through evaporation induced self-assembly of the mesostructure on the three-dimensional (3-D) interconnecting struts of the PU foam scaffold. The preparation was carried out by using phenol/formaldehyde resol as a carbon precursor, triblock copolymer F127 as a template for the mesostructure and PU foam as a sacrificial monolithic scaffold. Their hierarchical pore system was macroscopically fabricated with cable-like mesostructured carbonaceous struts. The carbonaceous monoliths exhibit macropores of diameter 100 450 μm, adjustable uniform mesopores (3.8 7.5 nm), high surface areas (200 870 m 2 /g), and large pore volumes (0.17 0.58) cm 3 /g. Compared with the corresponding evaporation induced self-assembly (EISA) process on a planar substrate, this facile process is a time-saving, labor-saving, space-saving, and highly effi cient pathway for mass production of ordered mesoporous materials.

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Section: Nano Researchsupporting

confidence: 53%

“…The absorption band at 1370 cm 1 can be assigned to the C-N stretching bands of PU foam [32]. After calcination at 350 °C under N 2 ( Fig.…”

Section: Nano Researchmentioning

confidence: 98%

Facile fabrication of hierarchically porous carbonaceous monoliths with ordered mesostructure via an organic organic self-assembly

2009

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“…Polyurethane foams (PUFs) are polymers with a wide variety of applications [28][29][30], which have been described to have a high capacity to retain organic vapors in their open cell structure [31][32][33]. These polymers are produced by the reaction of polyisocyanate with polyoils and water in the presence of specific catalyst [29].…”

Section: Polyurethane Foams (Pufs)mentioning

confidence: 99%

Advances in stir bar sorptive extraction coating: A review

Rykowska¹,

Wasiak²

2013

Acta Chromatographica

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Summary. Stir bar sorptive extraction (SBSE) is an extraction technique for enrichment of organic compounds from aqueous and gaseous matrices. This technique is based on sorptive extraction, whereby the solutes are extracted into a polymer coating on magnetic stirring rod. SBSE has been used in various types of analytical procedures and wide variety of matrices. However, a limitation of SBSE lies in the fact that only polydimethylsiloxane (PDMS)-coating material is commercially available and that PDMS predominantly extracts non-polar compounds with K o/w higher than 10. In this survey, a review on non-PDMS stir bar sorptive extraction coatings and their applications to the analysis of environmental, food, and biomedical samples is given.

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“…The lower density PUFs are usually used as insulating materials, sofa cushion, mattress and reduced energy materials, etc., 5,6 while the higher density PUFs are used as structural materials, energy absorption materials, mechanical shock materials, and even used to encapsulate the stockpile of nuclear weapon, etc. 7 Unfortunately, PUF is flammable and releases toxic gases in the process of burning, 8,9 which limits their further applications. Nowadays, more and more attention has been paid to improve the flame retardant properties of PUF.…”

Section: Introductionmentioning

confidence: 99%

Dependence of flame‐retardant properties on density of expandable graphite filled rigid polyurethane foam

Bian

Tang

et al. 2007

J of Applied Polymer Sci

125

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Different density rigid polyurethane foams (RPUF) filled with various expandable graphite loadings were fabricated by cast molding. The flame retardant properties of these composites were assessed by limiting oxygen index and horizontal and vertical burning tests. The results showed that the flame retardant efficiency got better with increase in the foam density at the fixed EG weight percent or with increase in the EG weight percent at the fixed foam density. After burning, the low density (0.065 g/cm 3 ) pure burned RPUF produced the highly collapsed and carbonized material, while the high density (0.510 g/cm 3 ) pure RPUF had little change in size and had reduced destruction of the material. Moreover, the scanning electronic microscope (SEM) observation showed that the higher density EG/RPUF composites had a more compact outer layer (burned layer) after burned, in which more wormlike materials composed of expanded graphite particles appeared. In addition, higher foam density led to less plastic deformation in the interface layer between the burned and the inside layers. These results indicated that a weight percent of a flame retardant additive that achieves satisfactory flame retardancy for a certain density foam cannot effectively be applied for another density foam.

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FTIR analysis of thermally processed PU foam

Cited by 85 publications

References 11 publications

Facile fabrication of hierarchically porous carbonaceous monoliths with ordered mesostructure via an organic organic self-assembly

Facile fabrication of hierarchically porous carbonaceous monoliths with ordered mesostructure via an organic organic self-assembly

Advances in stir bar sorptive extraction coating: A review

Dependence of flame‐retardant properties on density of expandable graphite filled rigid polyurethane foam

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