Calcium carbonate composite hydrogel films: Particle packing and optical properties

Murat Guvendiren; Andre A. Soshinski; Robert J. Gambogi; Shu Yang

doi:10.1002/pen.23077

Calcium carbonate composite hydrogel films: Particle packing and optical properties

Murat Guvendiren, Andre A. Soshinski, Robert J. Gambogi, Shu Yang

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Composite hydrogel films are prepared by photocrosslinking of partially polymerized poly(2-hydroxyethyl methacrylate-co-methyl methacrylate) prepolymer solution dispersed with aragonite precipitated calcium carbonate (PCC) particles. The effects of PCC aspect ratio (AR, 4.2-6.6) and volume fraction (φ_PCC) are studied with respect to the prepolymer viscosity, the maximum packing fraction (φ_m), and optical properties. φ_m obtained from Kreigher-Dougherty fitting is found to decrease with increasing AR of PCC particles, from φ_m = 0.33 (AR = 4.2) to φ_m = 0.21 (AR = 6.6). Scanning electron microscopy images revealed that the particles are uniformly dispersed and randomly orientated in the polymer network when φ_PCC < φ_m. Optically transparent neat hydrogel films become opaque with increasing particle concentration and AR because of random light scattering from the PCC particles. A whiteness up to 80 is obtained from 100 μm thick composite hydrogel film in the wet state with PCC AR = 6.6 and φ_PCC = 0.19 (near φ_m).

Original language	English (US)
Pages (from-to)	1317-1324
Number of pages	8
Journal	Polymer Engineering and Science
Volume	52
Issue number	6
DOIs	https://doi.org/10.1002/pen.23077
State	Published - Jun 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
Polymers and Plastics
Materials Chemistry

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@article{18a089ee89014466bfadd7f54bedce6e,

title = "Calcium carbonate composite hydrogel films: Particle packing and optical properties",

abstract = "Composite hydrogel films are prepared by photocrosslinking of partially polymerized poly(2-hydroxyethyl methacrylate-co-methyl methacrylate) prepolymer solution dispersed with aragonite precipitated calcium carbonate (PCC) particles. The effects of PCC aspect ratio (AR, 4.2-6.6) and volume fraction (φPCC) are studied with respect to the prepolymer viscosity, the maximum packing fraction (φm), and optical properties. φm obtained from Kreigher-Dougherty fitting is found to decrease with increasing AR of PCC particles, from φm = 0.33 (AR = 4.2) to φm = 0.21 (AR = 6.6). Scanning electron microscopy images revealed that the particles are uniformly dispersed and randomly orientated in the polymer network when φPCC < φm. Optically transparent neat hydrogel films become opaque with increasing particle concentration and AR because of random light scattering from the PCC particles. A whiteness up to 80 is obtained from 100 μm thick composite hydrogel film in the wet state with PCC AR = 6.6 and φPCC = 0.19 (near φm).",

author = "Murat Guvendiren and Soshinski, {Andre A.} and Gambogi, {Robert J.} and Shu Yang",

year = "2012",

month = jun,

doi = "10.1002/pen.23077",

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pages = "1317--1324",

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T2 - Particle packing and optical properties

AU - Guvendiren, Murat

AU - Soshinski, Andre A.

AU - Gambogi, Robert J.

AU - Yang, Shu

PY - 2012/6

Y1 - 2012/6

N2 - Composite hydrogel films are prepared by photocrosslinking of partially polymerized poly(2-hydroxyethyl methacrylate-co-methyl methacrylate) prepolymer solution dispersed with aragonite precipitated calcium carbonate (PCC) particles. The effects of PCC aspect ratio (AR, 4.2-6.6) and volume fraction (φPCC) are studied with respect to the prepolymer viscosity, the maximum packing fraction (φm), and optical properties. φm obtained from Kreigher-Dougherty fitting is found to decrease with increasing AR of PCC particles, from φm = 0.33 (AR = 4.2) to φm = 0.21 (AR = 6.6). Scanning electron microscopy images revealed that the particles are uniformly dispersed and randomly orientated in the polymer network when φPCC < φm. Optically transparent neat hydrogel films become opaque with increasing particle concentration and AR because of random light scattering from the PCC particles. A whiteness up to 80 is obtained from 100 μm thick composite hydrogel film in the wet state with PCC AR = 6.6 and φPCC = 0.19 (near φm).

AB - Composite hydrogel films are prepared by photocrosslinking of partially polymerized poly(2-hydroxyethyl methacrylate-co-methyl methacrylate) prepolymer solution dispersed with aragonite precipitated calcium carbonate (PCC) particles. The effects of PCC aspect ratio (AR, 4.2-6.6) and volume fraction (φPCC) are studied with respect to the prepolymer viscosity, the maximum packing fraction (φm), and optical properties. φm obtained from Kreigher-Dougherty fitting is found to decrease with increasing AR of PCC particles, from φm = 0.33 (AR = 4.2) to φm = 0.21 (AR = 6.6). Scanning electron microscopy images revealed that the particles are uniformly dispersed and randomly orientated in the polymer network when φPCC < φm. Optically transparent neat hydrogel films become opaque with increasing particle concentration and AR because of random light scattering from the PCC particles. A whiteness up to 80 is obtained from 100 μm thick composite hydrogel film in the wet state with PCC AR = 6.6 and φPCC = 0.19 (near φm).

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JO - Polymer Engineering and Science

JF - Polymer Engineering and Science

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Calcium carbonate composite hydrogel films: Particle packing and optical properties

Abstract

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