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Robust Polyurethane-Zeolite Composites with Diverse Applications.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Robust Polyurethane-Zeolite Composites with Diverse Applications./
Author:	Galadari, Mohammad.
Description:	1 online resource (97 pages)
Notes:	Source: Masters Abstracts International, Volume: 84-12.
Contained By:	Masters Abstracts International84-12.
Subject:	Chemical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9798379725440

Robust Polyurethane-Zeolite Composites with Diverse Applications.
Galadari, Mohammad.

Robust Polyurethane-Zeolite Composites with Diverse Applications. - 1 online resource (97 pages)

Source: Masters Abstracts International, Volume: 84-12.

Thesis (M.S.)--University of California, Los Angeles, 2023.

Includes bibliographical references

A scalable strategy for the fabrication of high flexural strength (~15 MPa), lightweight (0.9-1.2 g/cm3) organic-inorganic composites has been demonstrated. These hybrid composites comprise naturally occurring aluminosilicate particles, polyols (upcycled or virgin), and isocyanate linkers. These composites exhibit superior flexural and compressive properties, sound attenuation, and thermal insulation performance as compared to commonly employed materials such as ordinary Portland cement (OPC) and drywall. The material properties of the composites have been optimized by a systematic variation of the inorganic (60-46 wt%) and excess isocyanate contents (10-24 wt%). Additionally, the effect of the changes in polymer content (20-40 wt%) and size of aluminosilicate particles (2-20 µm) on the flexural properties of the composite have been analyzed to ascertain the optimum polymer content and inorganic particle size. Through this optimization, composites with flexural strength comparable to OPC and ~5x as compared to drywall and thermal insulation properties superior to OPC (~2x) and drywall (~1.12x) were obtained. In addition, the transverse and longitudinal attenuations of the composites were examined after the systematic variation of the compositions. The transverse attenuations were measured to be up to ∼6.4x and ∼8.2x that of gypsum for the IG300 and NX9014 composites respectively. The longitudinal attenuations were measured to be up to ∼8.8x and ∼15x that of gypsum for the IG300 and NX9014 composites respectively. The mechanical and material property trends of the composites were supported by morphological analysis of their surfaces. The composites are also shown to exhibit enhanced flame-resistant properties and antibacterial properties, with the latter achieved by subtle modification of the inorganic component of the composites.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798379725440Subjects--Topical Terms:

555952
Chemical engineering.
Subjects--Index Terms:

High-strength compositesIndex Terms--Genre/Form:

554714
Electronic books.

Robust Polyurethane-Zeolite Composites with Diverse Applications.
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520 $a A scalable strategy for the fabrication of high flexural strength (~15 MPa), lightweight (0.9-1.2 g/cm3) organic-inorganic composites has been demonstrated. These hybrid composites comprise naturally occurring aluminosilicate particles, polyols (upcycled or virgin), and isocyanate linkers. These composites exhibit superior flexural and compressive properties, sound attenuation, and thermal insulation performance as compared to commonly employed materials such as ordinary Portland cement (OPC) and drywall. The material properties of the composites have been optimized by a systematic variation of the inorganic (60-46 wt%) and excess isocyanate contents (10-24 wt%). Additionally, the effect of the changes in polymer content (20-40 wt%) and size of aluminosilicate particles (2-20 µm) on the flexural properties of the composite have been analyzed to ascertain the optimum polymer content and inorganic particle size. Through this optimization, composites with flexural strength comparable to OPC and ~5x as compared to drywall and thermal insulation properties superior to OPC (~2x) and drywall (~1.12x) were obtained. In addition, the transverse and longitudinal attenuations of the composites were examined after the systematic variation of the compositions. The transverse attenuations were measured to be up to ∼6.4x and ∼8.2x that of gypsum for the IG300 and NX9014 composites respectively. The longitudinal attenuations were measured to be up to ∼8.8x and ∼15x that of gypsum for the IG300 and NX9014 composites respectively. The mechanical and material property trends of the composites were supported by morphological analysis of their surfaces. The composites are also shown to exhibit enhanced flame-resistant properties and antibacterial properties, with the latter achieved by subtle modification of the inorganic component of the composites.
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